BugenZhao/LeetCode.playground

📜 Bugen's LeetCode solutions in Swift Playground. 𝐎𝐯𝐞𝐫 𝟒𝟎𝟎 𝐩𝐫𝐨𝐛𝐥𝐞𝐦𝐬 𝐢𝐧𝐜𝐥𝐮𝐝𝐞𝐝!

LeetCode.playground

struct LeetCodePlayground: CustomStringConvertible {
    let language    = "Swift 5.3"
    let description = "Bugen's LeetCode solutions in Swift Playground."

    typealias Priority = UInt
    enum Goal: Priority {
        case algorithm  = 0
        case clarity    = 1
        case runtime    = 2
    }

    enum Difficulty: String {
        case easy       = "😊"
        case medium     = "🤨"
        case hard       = "😫"
        case marked     = "🔞"
        case annoying   = "🤬"
    }
}

Tags

• DP
• Marked
• Tree
• Mathematics
• O(n)
• DFS
• Greedy
• Graph
• Hash Table
• Binary Search

More

• Array
• Two Pointers
• String
• Linked List
• Sort
• Bit Manipulation
• BFS
• Stack
• Shortest Path
• State Machine
• Sliding Windows
• Union Find
• Divide & Conquer
• Working
• Heap
• Annoying
• NP Complete

Recent

• 😊 [Q] [S] 0167. Two Sum II - Input array is sorted [Binary Search, Two Pointers]
• 😊 [Q] [S] 0160. Intersection of Two Linked Lists [Linked List, Two Pointers, O(n)]
• 😊 [Q] [S] 0268. Missing Number
• 🤨 [Q] [S] 0581. Shortest Unsorted Continuous Subarray [O(n), Stack]
• 🤨 [Q] [S] 0946. Validate Stack Sequences [O(n), Stack]
• 🤨 [Q] [S] 0991. Broken Calculator [Greedy]
• 🤨 [Q] [S] 1249. Minimum Remove to Make Valid Parentheses [O(n), Stack, String]
• 🤨 [Q] [S] 0413. Arithmetic Slices [O(n), DP]
• 😊 [Q] [S] 1337. The K Weakest Rows in a Matrix [Binary Search]
• 🤨 [Q] [S] 0138. Copy List with Random Pointer [Linked List]

Contests

• 🔖 [C] [S] Weekly Contest 211
• 🔖 [C] [S] Weekly Contest 210
• 🔖 [C] [S] Weekly Contest 209
• 🔖 [C] [S] Weekly Contest 205
• 🔖 [C] [S] Weekly Contest 203
• 🔖 [C] [S] Weekly Contest 202
• 🔖 [C] [S] Biweekly Contest 37

Problems

• 😊 [Q] [S] 0001. Two Sum [Hash Table]
• 🤨 [Q] [S] 0002. Add Two Numbers [Linked List]
• 🤨 [Q] [S] 0003. Longest Substring Without Repeating Characters [Array]
• 🔞 [Q] [S] 0004. Median of Two Sorted Arrays [Array, Binary Search]
• 🔞 [Q] [S] 0005. Longest Palindromic Substring [DP]
• 🤨 [Q] [S] 0006. ZigZag Conversion [Array]
• 😊 [Q] [S] 0007. Reverse Integer [Mathematics]
• 🤨 [Q] [S] 0008. String to Integer (atoi) [String]
• 😊 [Q] [S] 0009. Palindrome Number [Mathematics]
• 😫 [Q] [S] 0010. Regular Expression Matching [String, DP]
• 🤨 [Q] [S] 0011. Container With Most Water [Two Pointers, Greedy]
• 🤨 [Q] [S] 0012. Integer to Roman [Mathematics]
• 😊 [Q] [S] 0013. Roman to Integer [Mathematics]
• 😊 [Q] [S] 0014. Longest Common Prefix [String]
• 🤨 [Q] [S] 0015. 3Sum [Two Pointers]
• 🤨 [Q] [S] 0016. 3Sum Closest [Two Pointers]
• 🤨 [Q] [S] 0017. Letter Combinations of a Phone Number [Array]
• 🤨 [Q] [S] 0019. Remove Nth Node From End of List [Linked List, Two Pointers]
• 😊 [Q] [S] 0020. Valid Parentheses [Stack]
• 😊 [Q] [S] 0021. Merge Two Sorted Lists [Linked List]
• 🔞 [Q] [S] 0022. Generate Parentheses [String]
• 😫 [Q] [S] 0023. Merge k Sorted Lists [Sort, Linked List]
• 🤨 [Q] [S] 0024. Swap Nodes in Pairs [Linked List]
• 😫 [Q] [S] 0025. Reverse Nodes in k-Group [Linked List]
• 😊 [Q] [S] 0026. Remove Duplicates from Sorted Array [Array, Two Pointers]
• 😊 [Q] [S] 0027. Remove Element [Array, Two Pointers]
• 🔞 [Q] [S] 0028. Implement strStr() [String]
• 🤨 [Q] [S] 0029. Divide Two Integers [Bit Manipulation, Mathematics]
• 🤨 [Q] [S] 0031. Next Permutation [Sort, O(n), Binary Search]
• 😫 [Q] [S] 0032. Longest Valid Parentheses [DP]
• 🤨 [Q] [S] 0033. Search in Rotated Sorted Array [Binary Search]
• 🤨 [Q] [S] 0034. Find First and Last Position of Element in Sorted Array [Binary Search]
• 😊 [Q] [S] 0035. Search Insert Position [Binary Search]
• 🤨 [Q] [S] 0036. Valid Sudoku [Hash Table]
• 🤨 [Q] [S] 0038. Count and Say
• 🤨 [Q] [S] 0039. Combination Sum [DFS]
• 🤨 [Q] [S] 0040. Combination Sum II [DFS]
• 🔞 [Q] [S] 0041. First Missing Positive [Array]
• 🔞 [Q] [S] 0042. Trapping Rain Water [Stack]
• 🔞 [Q] [S] 0043. Multiply Strings [Mathematics]
• 🔞 [Q] [S] 0044. Wildcard Matching [DFS, Greedy]
• 🔞 [Q] [S] 0045. Jump Game II [Greedy, BFS]
• 🤨 [Q] [S] 0046. Permutations [Tree, DFS]
• 🤨 [Q] [S] 0048. Rotate Image [Array, Mathematics]
• 🤨 [Q] [S] 0050. Pow(x, n) [Mathematics]
• 😫 [Q] [S] 0051. N-Queens [DFS, Bit Manipulation]
• 😫 [Q] [S] 0052. N-Queens II
• 😊 [Q] [S] 0053. Maximum Subarray [DP]
• 🤨 [Q] [S] 0055. Jump Game [Greedy]
• 🤨 [Q] [S] 0056. Merge Intervals [Sort]
• 🤨 [Q] [S] 0057. Insert Interval [Sort]
• 😊 [Q] [S] 0058. Length of Last Word
• 😫 [Q] [S] 0060. Permutation Sequence [Mathematics, String]
• 🤨 [Q] [S] 0061. Rotate List [Linked List]
• 🤨 [Q] [S] 0062. Unique Paths [Mathematics, DP]
• 🤨 [Q] [S] 0063. Unique Paths II [DP]
• 🤨 [Q] [S] 0064. Minimum Path Sum [DP]
• 🔞 [Q] [S] 0065. Valid Number [State Machine, String]
• 😊 [Q] [S] 0066. Plus One
• 😊 [Q] [S] 0067. Add Binary
• 😊 [Q] [S] 0069. Sqrt(x) [Mathematics]
• 😊 [Q] [S] 0070. Climbing Stairs [DP]
• 🤨 [Q] [S] 0071. Simplify Path [Stack]
• 😫 [Q] [S] 0072. Edit Distance [DP]
• 🤨 [Q] [S] 0074. Search a 2D Matrix [Binary Search]
• 🤨 [Q] [S] 0075. Sort Colors [Array, Two Pointers]
• 😫 [Q] [S] 0076. Minimum Window Substring [Sliding Windows, Hash Table, O(n)]
• 🤨 [Q] [S] 0078. Subsets [Bit Manipulation]
• 🤨 [Q] [S] 0080. Remove Duplicates from Sorted Array II [Array, Two Pointers]
• 😫 [Q] [S] 0087. Scramble String [DP]
• 🤨 [Q] [S] 0090. Subsets II [Array, Hash Table]
• 🤨 [Q] [S] 0091. Decode Ways [DP]
• 🤨 [Q] [S] 0092. Reverse Linked List II [Linked List]
• 🤨 [Q] [S] 0096. Unique Binary Search Trees [Tree]
• 😫 [Q] [S] 0097. Interleaving String [DP]
• 🤨 [Q] [S] 0098. Validate Binary Search Tree
• 😫 [Q] [S] 0099. Recover Binary Search Tree [O(n), DFS, Tree]
• 😊 [Q] [S] 0100. Same Tree [Tree]
• 🤨 [Q] [S] 0102. Binary Tree Level Order Traversal [Tree, BFS]
• 🤨 [Q] [S] 0103. Binary Tree Zigzag Level Order Traversal [Tree, BFS]
• 🤨 [Q] [S] 0105. Construct Binary Tree from Preorder and Inorder Traversal [Tree]
• 🤨 [Q] [S] 0106. Construct Binary Tree from Inorder and Postorder Traversal [Tree]
• 🤨 [Q] [S] 0107. Binary Tree Level Order Traversal II [BFS]
• 😊 [Q] [S] 0111. Minimum Depth of Binary Tree [Tree]
• 😊 [Q] [S] 0112. Path Sum [Tree, DFS]
• 🤨 [Q] [S] 0113. Path Sum II [Tree, DFS]
• 😊 [Q] [S] 0118. Pascal's Triangle
• 😊 [Q] [S] 0119. Pascal's Triangle II
• 🤨 [Q] [S] 0120. Triangle [DP, Graph, Shortest Path]
• 😊 [Q] [S] 0121. Best Time to Buy and Sell Stock [DP, State Machine]
• 😊 [Q] [S] 0122. Best Time to Buy and Sell Stock II [Greedy]
• 🔞 [Q] [S] 0123. Best Time to Buy and Sell Stock III [DP, State Machine]
• 😊 [Q] [S] 0125. Valid Palindrome
• 😫 [Q] [S] 0127. Word Ladder [Graph, BFS, Shortest Path]
• 🤨 [Q] [S] 0129. Sum Root to Leaf Numbers [Tree, BFS]
• 🤨 [Q] [S] 0130. Surrounded Regions [Graph, DFS]
• 🤨 [Q] [S] 0131. Palindrome Partitioning [DP]
• 🔞 [Q] [S] 0132. Palindrome Partitioning II [DP]
• 🤨 [Q] [S] 0133. Clone Graph [Graph]
• 🔞 [Q] [S] 0134. Gas Station [O(n)]
• 😫 [Q] [S] 0135. Candy [Greedy, O(n)]
• 😊 [Q] [S] 0136. Single Number [Bit Manipulation]
• 🤨 [Q] [S] 0137. Single Number II [Bit Manipulation, State Machine]
• 🤨 [Q] [S] 0138. Copy List with Random Pointer [Linked List]
• 🤨 [Q] [S] 0139. Word Break [DP]
• 😫 [Q] [S] 0140. Word Break II [DP, DFS, String]
• 😊 [Q] [S] 0141. Linked List Cycle [Linked List, Two Pointers]
• 🔞 [Q] [S] 0142. Linked List Cycle II [Linked List, Two Pointers]
• 🔞 [Q] [S] 0143. Reorder List [Linked List]
• 🤨 [Q] [S] 0147. Insertion Sort List [Linked List]
• 🤨 [Q] [S] 0148. Sort List [Linked List, Divide & Conquer, Sort, Two Pointers]
• 🤨 [Q] [S] 0151. Reverse Words in a String
• 🤨 [Q] [S] 0152. Maximum Product Subarray [DP, Divide & Conquer, O(n)]
• 🤨 [Q] [S] 0153. Find Minimum in Rotated Sorted Array [Binary Search]
• 😫 [Q] [S] 0154. Find Minimum in Rotated Sorted Array II [Binary Search]
• 😊 [Q] [S] 0160. Intersection of Two Linked Lists [Linked List, Two Pointers, O(n)]
• 🤨 [Q] [S] 0165. Compare Version Numbers [String]
• 😊 [Q] [S] 0167. Two Sum II - Input array is sorted [Binary Search, Two Pointers]
• 😊 [Q] [S] 0169. Majority Element [Array, O(n)]
• 😊 [Q] [S] 0171. Excel Sheet Column Number
• 🔞 [Q] [S] 0174. Dungeon Game [DP]
• 🤨 [Q] [S] 0179. Largest Number [Sort]
• 🤨 [Q] [S] 0187. Repeated DNA Sequences [Hash Table]
• 😫 [Q] [S] 0188. Best Time to Buy and Sell Stock IV [Greedy, DP, State Machine]
• 🔞 [Q] [S] 0189. Rotate Array [Array, O(n)]
• 🔞 [Q] [S] 0190. Reverse Bits [Bit Manipulation]
• 😊 [Q] [S] 0191. Number of 1 Bits
• 🤨 [Q] [S] 0198. House Robber [DP, O(n)]
• 🤨 [Q] [S] 0199. Binary Tree Right Side View [Tree, BFS]
• 🤨 [Q] [S] 0201. Bitwise AND of Numbers Range [Bit Manipulation]
• 😊 [Q] [S] 0203. Remove Linked List Elements [Linked List]
• 😊 [Q] [S] 0204. Count Primes [Mathematics]
• 🔞 [Q] [S] 0206. Reverse Linked List [Linked List]
• 🤨 [Q] [S] 0207. Course Schedule [Graph]
• 🤨 [Q] [S] 0208. Implement Trie (Prefix Tree) [Tree]
• 🤨 [Q] [S] 0209. Minimum Size Subarray Sum [Sliding Windows, Array, O(n)]
• 🤨 [Q] [S] 0210. Course Schedule II [Graph]
• 🤨 [Q] [S] 0211. Design Add and Search Words Data Structure [Tree, DFS]
• 🤨 [Q] [S] 0213. House Robber II [DP, O(n)]
• 🤨 [Q] [S] 0216. Combination Sum III [DFS]
• 😊 [Q] [S] 0217. Contains Duplicate [Hash Table]
• 😊 [Q] [S] 0219. Contains Duplicate II [Hash Table, Sliding Windows]
• 🤨 [Q] [S] 0220. Contains Duplicate III [Hash Table, Sliding Windows]
• 🤨 [Q] [S] 0222. Count Complete Tree Nodes [Tree]
• 😊 [Q] [S] 0226. Invert Binary Tree [Tree]
• 😊 [Q] [S] 0228. Summary Ranges
• 🔞 [Q] [S] 0229. Majority Element II [Array, O(n)]
• 🤨 [Q] [S] 0230. Kth Smallest Element in a BST [Tree, DFS]
• 😊 [Q] [S] 0231. Power of Two [Mathematics]
• 😊 [Q] [S] 0237. Delete Node in a Linked List [Linked List]
• 🔞 [Q] [S] 0240. Search a 2D Matrix II [O(n)]
• 😊 [Q] [S] 0242. Valid Anagram [Hash Table]
• 😊 [Q] [S] 0258. Add Digits [Mathematics]
• 🤨 [Q] [S] 0260. Single Number III [Bit Manipulation, O(n)]
• 😊 [Q] [S] 0263. Ugly Number
• 🤨 [Q] [S] 0264. Ugly Number II [Mathematics, Two Pointers]
• 😊 [Q] [S] 0268. Missing Number
• 🤨 [Q] [S] 0274. H-Index [Array, Sort]
• 🤨 [Q] [S] 0275. H-Index II [Binary Search, Array]
• 😊 [Q] [S] 0278. First Bad Version [Binary Search]
• 🤨 [Q] [S] 0279. Perfect Squares [Mathematics]
• 🤨 [Q] [S] 0284. Peeking Iterator
• 🤨 [Q] [S] 0287. Find the Duplicate Number [Binary Search, Two Pointers]
• 😊 [Q] [S] 0290. Word Pattern [Hash Table]
• 🔞 [Q] [S] 0295. Find Median from Data Stream [Heap]
• 🤨 [Q] [S] 0299. Bulls and Cows
• 🔞 [Q] [S] 0300. Longest Increasing Subsequence [DP, Binary Search]
• 🤨 [Q] [S] 0309. Best Time to Buy and Sell Stock with Cooldown [DP, State Machine, O(n)]
• 🔞 [Q] [S] 0310. Minimum Height Trees [Tree]
• 🔞 [Q] [S] 0315. Count of Smaller Numbers After Self [Sort, Divide & Conquer]
• 🤨 [Q] [S] 0316. Remove Duplicate Letters [Greedy, DP]
• 😊 [Q] [S] 0326. Power of Three
• 🤨 [Q] [S] 0328. Odd Even Linked List [Linked List]
• 😫 [Q] [S] 0329. Longest Increasing Path in a Matrix [Graph]
• 🤨 [Q] [S] 0332. Reconstruct Itinerary [DFS]
• 🤨 [Q] [S] 0338. Counting Bits [Mathematics]
• 😊 [Q] [S] 0342. Power of Four [Bit Manipulation]
• 😊 [Q] [S] 0344. Reverse String
• 🤨 [Q] [S] 0347. Top K Frequent Elements
• 😊 [Q] [S] 0350. Intersection of Two Arrays II [Two Pointers]
• 😊 [Q] [S] 0367. Valid Perfect Square [Mathematics, Binary Search]
• 🤨 [Q] [S] 0368. Largest Divisible Subset [DP]
• 🤨 [Q] [S] 0372. Super Pow [Mathematics]
• 🤨 [Q] [S] 0377. Combination Sum IV [DFS, DP]
• 🤨 [Q] [S] 0380. Insert Delete GetRandom O(1) [Hash Table]
• 😊 [Q] [S] 0383. Ransom Note [Hash Table]
• 😊 [Q] [S] 0387. First Unique Character in a String [String]
• 😊 [Q] [S] 0389. Find the Difference [Bit Manipulation]
• 😊 [Q] [S] 0392. Is Subsequence [DP, Greedy, Two Pointers, Binary Search]
• 🤨 [Q] [S] 0397. Integer Replacement [Mathematics]
• 🤨 [Q] [S] 0399. Evaluate Division [Graph, Shortest Path]
• 🤨 [Q] [S] 0402. Remove K Digits [Mathematics, Stack, Greedy]
• 😊 [Q] [S] 0404. Sum of Left Leaves [Tree, DFS]
• 🔞 [Q] [S] 0406. Queue Reconstruction by Height [Greedy, Sort]
• 😊 [Q] [S] 0409. Longest Palindrome
• 😫 [Q] [S] 0410. Split Array Largest Sum [Binary Search]
• 😊 [Q] [S] 0412. Fizz Buzz
• 🤨 [Q] [S] 0413. Arithmetic Slices [O(n), DP]
• 🤨 [Q] [S] 0417. Pacific Atlantic Water Flow [DFS, Graph]
• 🤨 [Q] [S] 0421. Maximum XOR of Two Numbers in an Array [Bit Manipulation, O(n), Greedy]
• 🤨 [Q] [S] 0430. Flatten a Multilevel Doubly Linked List [Tree]
• 🔞 [Q] [S] 0435. Non-overlapping Intervals [Greedy]
• 🤨 [Q] [S] 0436. Find Right Interval [Hash Table, Binary Search]
• 🤨 [Q] [S] 0437. Path Sum III [Hash Table, Tree, DFS]
• 🤨 [Q] [S] 0438. Find All Anagrams in a String [Array]
• 😊 [Q] [S] 0441. Arranging Coins [Mathematics]
• 🤨 [Q] [S] 0442. Find All Duplicates in an Array [Array, O(n)]
• 🤨 [Q] [S] 0449. Serialize and Deserialize BST [Tree, Stack, String]
• 🤨 [Q] [S] 0450. Delete Node in a BST [Tree]
• 🤨 [Q] [S] 0451. Sort Characters By Frequency [Hash Table, String]
• 🤨 [Q] [S] 0452. Minimum Number of Arrows to Burst Balloons [Greedy, Sort]
• 😊 [Q] [S] 0455. Assign Cookies [Greedy, O(n)]
• 🔞 [Q] [S] 0456. 132 Pattern [Stack, O(n)]
• 🔞 [Q] [S] 0459. Repeated Substring Pattern [String]
• 😊 [Q] [S] 0461. Hamming Distance
• 😊 [Q] [S] 0463. Island Perimeter
• 🤨 [Q] [S] 0468. Validate IP Address
• 🔞 [Q] [S] 0470. Implement Rand10() Using Rand7() [Mathematics]
• 😫 [Q] [S] 0472. Concatenated Words [String, Tree, DFS]
• 😊 [Q] [S] 0476. Number Complement [Mathematics]
• 🤨 [Q] [S] 0477. Total Hamming Distance [Bit Manipulation]
• 🤨 [Q] [S] 0486. Predict the Winner [DP]
• 😊 [Q] [S] 0492. Construct the Rectangle
• 😫 [Q] [S] 0493. Reverse Pairs [Sort, Two Pointers, Divide & Conquer]
• 🤨 [Q] [S] 0495. Teemo Attacking [O(n)]
• 🤨 [Q] [S] 0497. Random Point in Non-overlapping Rectangles [Binary Search]
• 😊 [Q] [S] 0506. Relative Ranks
• 🤨 [Q] [S] 0515. Find Largest Value in Each Tree Row [Tree, BFS]
• 🤨 [Q] [S] 0518. Coin Change 2 [DP]
• 😊 [Q] [S] 0520. Detect Capital
• 🤨 [Q] [S] 0525. Contiguous Array [Array]
• 🤨 [Q] [S] 0528. Random Pick with Weight [Binary Search]
• 🤨 [Q] [S] 0532. K-diff Pairs in an Array [Hash Table]
• 🤨 [Q] [S] 0540. Single Element in a Sorted Array [Binary Search]
• 😊 [Q] [S] 0559. Maximum Depth of N-ary Tree [BFS, Tree]
• 🤨 [Q] [S] 0567. Permutation in String
• 🤨 [Q] [S] 0581. Shortest Unsorted Continuous Subarray [O(n), Stack]
• 🤨 [Q] [S] 0593. Valid Square
• 😊 [Q] [S] 0594. Longest Harmonious Subsequence [Hash Table]
• 🔞 [Q] [S] 0600. Non-negative Integers without Consecutive Ones [DP, Bit Manipulation]
• 🔞 [Q] [S] 0621. Task Scheduler [Heap, Sort, O(n)]
• 🔞 [Q] [S] 0630. Course Schedule III [Greedy]
• 🤨 [Q] [S] 0662. Maximum Width of Binary Tree [Tree]
• 🤨 [Q] [S] 0669. Trim a Binary Search Tree [Tree]
• 🤨 [Q] [S] 0684. Redundant Connection [Graph, Union Find]
• 🤨 [Q] [S] 0686. Repeated String Match [String]
• 😊 [Q] [S] 0693. Binary Number with Alternating Bits [Bit Manipulation]
• 😊 [Q] [S] 0700. Search in a Binary Search Tree [Tree]
• 🤨 [Q] [S] 0701. Insert into a Binary Search Tree [Tree]
• 😊 [Q] [S] 0704. Binary Search [Binary Search, Array]
• 😊 [Q] [S] 0705. Design HashSet [Hash Table]
• 😫 [Q] [S] 0710. Random Pick with Blacklist [Mathematics]
• 🤨 [Q] [S] 0713. Subarray Product Less Than K [O(n), Two Pointers]
• 🤨 [Q] [S] 0714. Best Time to Buy and Sell Stock with Transaction Fee [DP, State Machine, O(n)]
• 🤨 [Q] [S] 0718. Maximum Length of Repeated Subarray [DP]
• 🤨 [Q] [S] 0725. Split Linked List in Parts [Linked List]
• 😊 [Q] [S] 0733. Flood Fill [Graph, BFS]
• 🤨 [Q] [S] 0735. Asteroid Collision [Stack, O(n)]
• 🤨 [Q] [S] 0743. Network Delay Time [Graph, Shortest Path]
• 😊 [Q] [S] 0746. Min Cost Climbing Stairs [DP]
• 🤨 [Q] [S] 0763. Partition Labels [Greedy]
• 😊 [Q] [S] 0771. Jewels and Stones [Hash Table]
• 🤨 [Q] [S] 0784. Letter Case Permutation
• 🤨 [Q] [S] 0785. Is Graph Bipartite? [Graph, DFS]
• 📝 [Q] [S] 0787. Cheapest Flights Within K Stops [Graph, Shortest Path]
• 🤨 [Q] [S] 0797. All Paths From Source to Target [DFS, Graph]
• 🤨 [Q] [S] 0799. Champagne Tower [DP]
• 😫 [Q] [S] 0815. Bus Routes [BFS]
• 😊 [Q] [S] 0821. Shortest Distance to a Character [O(n)]
• 😊 [Q] [S] 0824. Goat Latin
• 😊 [Q] [S] 0832. Flipping an Image
• 🤨 [Q] [S] 0835. Image Overlap [Hash Table]
• 📝 [Q] [S] 0839. Similar String Groups
• 🤨 [Q] [S] 0841. Keys and Rooms [Graph, DFS]
• 🤨 [Q] [S] 0848. Shifting Letters
• 🤨 [Q] [S] 0849. Maximize Distance to Closest Person [O(n)]
• 😫 [Q] [S] 0850. Rectangle Area II [Mathematics]
• 🔞 [Q] [S] 0857. Minimum Cost to Hire K Workers [Heap, Greedy]
• 😊 [Q] [S] 0859. Buddy Strings [String]
• 🤨 [Q] [S] 0881. Boats to Save People [Greedy, Two Pointers]
• 🤨 [Q] [S] 0886. Possible Bipartition [Graph, DFS]
• 🔞 [Q] [S] 0887. Super Egg Drop [DP]
• 😊 [Q] [S] 0896. Monotonic Array
• 🤨 [Q] [S] 0901. Online Stock Span [Array, Stack]
• 😊 [Q] [S] 0905. Sort Array By Parity [Sort, O(n)]
• 🤨 [Q] [S] 0912. Sort an Array [Sort]
• 🤨 [Q] [S] 0918. Maximum Sum Circular Subarray [DP]
• 😫 [Q] [S] 0920. Number of Music Playlists [DP]
• 🤨 [Q] [S] 0921. Minimum Add to Make Parentheses Valid [Stack]
• 😊 [Q] [S] 0922. Sort Array By Parity II [Sort, O(n)]
• 🤨 [Q] [S] 0931. Minimum Falling Path Sum [DP]
• 😊 [Q] [S] 0933. Number of Recent Calls [Binary Search]
• 😫 [Q] [S] 0936. Stamping The Sequence [Greedy]
• 🤨 [Q] [S] 0946. Validate Stack Sequences [O(n), Stack]
• 🤨 [Q] [S] 0948. Bag of Tokens [Two Pointers, O(n), Greedy]
• 🤨 [Q] [S] 0949. Largest Time for Given Digits [String, Mathematics]
• 🔞 [Q] [S] 0952. Largest Component Size by Common Factor [Mathematics, Union Find]
• 🤨 [Q] [S] 0957. Prison Cells After N Days [Hash Table]
• 🔞 [Q] [S] 0959. Regions Cut By Slashes [Union Find]
• 🔞 [Q] [S] 0962. Maximum Width Ramp [Stack, Two Pointers]
• 🤨 [Q] [S] 0967. Numbers With Same Consecutive Differences [DFS]
• 🤨 [Q] [S] 0969. Pancake Sorting [Sort]
• 🤨 [Q] [S] 0973. K Closest Points to Origin [Sort]
• 🤨 [Q] [S] 0974. Subarray Sums Divisible by K [Hash Table]
• 🤨 [Q] [S] 0978. Longest Turbulent Subarray [DP, Sliding Windows]
• 😫 [Q] [S] 0980. Unique Paths III [Graph, DFS]
• 🤨 [Q] [S] 0983. Minimum Cost For Tickets [DP]
• 🤨 [Q] [S] 0984. String Without AAA or BBB [Greedy]
• 🤨 [Q] [S] 0986. Interval List Intersections [Two Pointers, Greedy]
• 🤬 [Q] [S] 0987. Vertical Order Traversal of a Binary Tree [Tree, DFS]
• 🤨 [Q] [S] 0990. Satisfiability of Equality Equations [Union Find]
• 🤨 [Q] [S] 0991. Broken Calculator [Greedy]
• 😊 [Q] [S] 0993. Cousins in Binary Tree [Tree, DFS]
• 🤨 [Q] [S] 0994. Rotting Oranges [Graph, BFS]
• 😊 [Q] [S] 0997. Find the Town Judge [Graph]
• 🤨 [Q] [S] 1007. Minimum Domino Rotations For Equal Row
• 🤨 [Q] [S] 1008. Construct Binary Search Tree from Preorder Traversal [Tree]
• 😊 [Q] [S] 1009. Complement of Base 10 Integer [Mathematics]
• 🤨 [Q] [S] 1015. Smallest Integer Divisible by K
• 😊 [Q] [S] 1021. Remove Outermost Parentheses [Stack]
• 😊 [Q] [S] 1022. Sum of Root To Leaf Binary Numbers [Tree, DFS]
• 😊 [Q] [S] 1025. Divisor Game [Mathematics]
• 🤨 [Q] [S] 1029. Two City Scheduling [Greedy]
• 😫 [Q] [S] 1032. Stream of Characters [Tree, String]
• 🤨 [Q] [S] 1035. Uncrossed Lines [DP]
• 🤨 [Q] [S] 1041. Robot Bounded In Circle
• 🤨 [Q] [S] 1043. Partition Array for Maximum Sum [DP]
• 🤬 [Q] [S] 1044. Longest Duplicate Substring [Hash Table, Sliding Windows, String, Binary Search]
• 🤨 [Q] [S] 1090. Largest Values From Labels [Greedy]
• 🤨 [Q] [S] 1094. Car Pooling [Array]
• 😊 [Q] [S] 1103. Distribute Candies to People
• 😊 [Q] [S] 1108. Defanging an IP Address
• 😊 [Q] [S] 1122. Relative Sort Array [Hash Table, Sort]
• 😊 [Q] [S] 1200. Minimum Absolute Difference
• 🔞 [Q] [S] 1203. Sort Items by Groups Respecting Dependencies [Graph, DFS]
• 😊 [Q] [S] 1217. Minimum Cost to Move Chips to The Same Position
• 😊 [Q] [S] 1221. Split a String in Balanced Strings
• 😊 [Q] [S] 1232. Check If It Is a Straight Line [Mathematics]
• 🤨 [Q] [S] 1233. Remove Sub-Folders from the Filesystem [Tree, DFS, String, Binary Search]
• 😫 [Q] [S] 1235. Maximum Profit in Job Scheduling [DP, Binary Search]
• 🤨 [Q] [S] 1249. Minimum Remove to Make Valid Parentheses [O(n), Stack, String]
• 😫 [Q] [S] 1250. Check If It Is a Good Array [Mathematics]
• 🔞 [Q] [S] 1263. Minimum Moves to Move a Box to Their Target Location [Graph, BFS, Shortest Path]
• 😊 [Q] [S] 1266. Minimum Time Visiting All Points
• 🔞 [Q] [S] 1277. Count Square Submatrices with All Ones [DP]
• 😫 [Q] [S] 1278. Palindrome Partitioning III [DP]
• 😊 [Q] [S] 1281. Subtract the Product and Sum of Digits of an Integer
• 🤨 [Q] [S] 1282. Group the People Given the Group Size They Belong To
• 🤨 [Q] [S] 1283. Find the Smallest Divisor Given a Threshold
• 🤨 [Q] [S] 1286. Iterator for Combination [Bit Manipulation]
• 🤨 [Q] [S] 1288. Remove Covered Intervals [Greedy, Sort]
• 📝 [Q] [S] 1289. Minimum Falling Path Sum II [DP]
• 😊 [Q] [S] 1290. Convert Binary Number in a Linked List to Integer [Bit Manipulation]
• 🤨 [Q] [S] 1291. Sequential Digits [DFS]
• 😊 [Q] [S] 1295. Find Numbers with Even Number of Digits
• 😊 [Q] [S] 1299. Replace Elements with Greatest Element on Right Side
• 🤨 [Q] [S] 1305. All Elements in Two Binary Search Trees [Tree]
• 🤨 [Q] [S] 1306. Jump Game III [BFS]
• 😊 [Q] [S] 1309. Decrypt String from Alphabet to Integer Mapping
• 😊 [Q] [S] 1313. Decompress Run-Length Encoded List
• 🤨 [Q] [S] 1319. Number of Operations to Make Network Connected [Graph, Union Find]
• 🔞 [Q] [S] 1330. Reverse Subarray To Maximize Array Value [Mathematics, O(n)]
• 🤨 [Q] [S] 1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance [Graph, Shortest Path]
• 😊 [Q] [S] 1337. The K Weakest Rows in a Matrix [Binary Search]
• 😊 [Q] [S] 1342. Number of Steps to Reduce a Number to Zero
• 🤨 [Q] [S] 1344. Angle Between Hands of a Clock
• 😫 [Q] [S] 1345. Jump Game IV [BFS]
• 😊 [Q] [S] 1351. Count Negative Numbers in a Sorted Matrix
• 😫 [Q] [S] 1363. Largest Multiple of Three [Mathematics]
• 😊 [Q] [S] 1365. How Many Numbers Are Smaller Than the Current Number
• 🤨 [Q] [S] 1367. Linked List in Binary Tree [Tree, DFS]
• 😫 [Q] [S] 1368. Minimum Cost to Make at Least One Valid Path in a Grid [Graph, Shortest Path]
• 🤨 [Q] [S] 1386. Cinema Seat Allocation [Greedy]
• 🤨 [Q] [S] 1391. Check if There is a Valid Path in a Grid [Graph, BFS]
• 🤨 [Q] [S] 1395. Count Number of Teams [Mathematics]
• 🤨 [Q] [S] 1404. Number of Steps to Reduce a Number in Binary Representation to One [O(n), Bit Manipulation]
• 🤨 [Q] [S] 1405. Longest Happy String [Greedy]
• 😊 [Q] [S] 1431. Kids With the Greatest Number of Candies [Array]
• 🤨 [Q] [S] 1432. Max Difference You Can Get From Changing an Integer [Mathematics, Greedy]
• 😊 [Q] [S] 1436. Destination City [Hash Table, Graph]
• 😊 [Q] [S] 1446. Consecutive Characters
• 😊 [Q] [S] 1450. Number of Students Doing Homework at a Given Time
• 🤨 [Q] [S] 1457. Pseudo-Palindromic Paths in a Binary Tree [Bit Manipulation, Tree]
• 😊 [Q] [S] 1464. Maximum Product of Two Elements in an Array [Mathematics]
• 😊 [Q] [S] 1475. Final Prices With a Special Discount in a Shop [Stack, O(n)]
• 🔞 [Q] [S] 1494. Parallel Courses II [DP, Bit Manipulation, NP Complete]
• 😊 [Q] [S] 1496. Path Crossing [Hash Table]
• 😫 [Q] [S] 1510. Stone Game IV [DP]

Todo

• 🤨 [Q] [S] 0018. 4Sum
• 😫 [Q] [S] 0030. Substring with Concatenation of All Words
• 😫 [Q] [S] 0037. Sudoku Solver
• 🤨 [Q] [S] 0047. Permutations II
• 🤨 [Q] [S] 0049. Group Anagrams
• 🤨 [Q] [S] 0054. Spiral Matrix
• 🤨 [Q] [S] 0059. Spiral Matrix II
• 😫 [Q] [S] 0068. Text Justification
• 🤨 [Q] [S] 0073. Set Matrix Zeroes
• 🤨 [Q] [S] 0077. Combinations
• 🤨 [Q] [S] 0079. Word Search
• 🤨 [Q] [S] 0081. Search in Rotated Sorted Array II
• 🤨 [Q] [S] 0082. Remove Duplicates from Sorted List II
• 😊 [Q] [S] 0083. Remove Duplicates from Sorted List
• 😫 [Q] [S] 0084. Largest Rectangle in Histogram
• 😫 [Q] [S] 0085. Maximal Rectangle
• 🤨 [Q] [S] 0086. Partition List
• 😊 [Q] [S] 0088. Merge Sorted Array
• 🤨 [Q] [S] 0089. Gray Code
• 🤨 [Q] [S] 0093. Restore IP Addresses
• 🤨 [Q] [S] 0094. Binary Tree Inorder Traversal
• 🤨 [Q] [S] 0095. Unique Binary Search Trees II
• 😊 [Q] [S] 0101. Symmetric Tree
• 😊 [Q] [S] 0104. Maximum Depth of Binary Tree
• 😊 [Q] [S] 0108. Convert Sorted Array to Binary Search Tree
• 🤨 [Q] [S] 0109. Convert Sorted List to Binary Search Tree
• 😊 [Q] [S] 0110. Balanced Binary Tree
• 🤨 [Q] [S] 0114. Flatten Binary Tree to Linked List
• 😫 [Q] [S] 0115. Distinct Subsequences
• 🤨 [Q] [S] 0116. Populating Next Right Pointers in Each Node
• 🤨 [Q] [S] 0117. Populating Next Right Pointers in Each Node II
• 😫 [Q] [S] 0124. Binary Tree Maximum Path Sum
• 😫 [Q] [S] 0126. Word Ladder II
• 😫 [Q] [S] 0128. Longest Consecutive Sequence
• 🤨 [Q] [S] 0144. Binary Tree Preorder Traversal
• 🤨 [Q] [S] 0145. Binary Tree Postorder Traversal
• 🤨 [Q] [S] 0146. LRU Cache
• 😫 [Q] [S] 0149. Max Points on a Line
• 🤨 [Q] [S] 0150. Evaluate Reverse Polish Notation
• 😊 [Q] [S] 0155. Min Stack
• 🤨 [Q] [S] 0156. Binary Tree Upside Down
• 😊 [Q] [S] 0157. Read N Characters Given Read4
• 😫 [Q] [S] 0158. Read N Characters Given Read4 II - Call multiple times
• 🤨 [Q] [S] 0159. Longest Substring with At Most Two Distinct Characters
• 🤨 [Q] [S] 0161. One Edit Distance
• 🤨 [Q] [S] 0162. Find Peak Element
• 😊 [Q] [S] 0163. Missing Ranges
• 😫 [Q] [S] 0164. Maximum Gap
• 🤨 [Q] [S] 0166. Fraction to Recurring Decimal
• 😊 [Q] [S] 0168. Excel Sheet Column Title
• 😊 [Q] [S] 0170. Two Sum III - Data structure design
• 😊 [Q] [S] 0172. Factorial Trailing Zeroes
• 🤨 [Q] [S] 0173. Binary Search Tree Iterator
• 🤨 [Q] [S] 0186. Reverse Words in a String II
• 🤨 [Q] [S] 0200. Number of Islands
• 😊 [Q] [S] 0202. Happy Number
• 😊 [Q] [S] 0205. Isomorphic Strings
• 😫 [Q] [S] 0212. Word Search II
• 😫 [Q] [S] 0214. Shortest Palindrome
• 🤨 [Q] [S] 0215. Kth Largest Element in an Array
• 😫 [Q] [S] 0218. The Skyline Problem
• 🤨 [Q] [S] 0221. Maximal Square
• 🤨 [Q] [S] 0223. Rectangle Area
• 😫 [Q] [S] 0224. Basic Calculator
• 😊 [Q] [S] 0225. Implement Stack using Queues
• 🤨 [Q] [S] 0227. Basic Calculator II
• 😊 [Q] [S] 0232. Implement Queue using Stacks
• 😫 [Q] [S] 0233. Number of Digit One
• 😊 [Q] [S] 0234. Palindrome Linked List
• 😊 [Q] [S] 0235. Lowest Common Ancestor of a Binary Search Tree
• 🤨 [Q] [S] 0236. Lowest Common Ancestor of a Binary Tree
• 🤨 [Q] [S] 0238. Product of Array Except Self
• 😫 [Q] [S] 0239. Sliding Window Maximum
• 🤨 [Q] [S] 0241. Different Ways to Add Parentheses
• 😊 [Q] [S] 0243. Shortest Word Distance
• 🤨 [Q] [S] 0244. Shortest Word Distance II
• 🤨 [Q] [S] 0245. Shortest Word Distance III
• 😊 [Q] [S] 0246. Strobogrammatic Number
• 🤨 [Q] [S] 0247. Strobogrammatic Number II
• 😫 [Q] [S] 0248. Strobogrammatic Number III
• 🤨 [Q] [S] 0249. Group Shifted Strings
• 🤨 [Q] [S] 0250. Count Univalue Subtrees
• 🤨 [Q] [S] 0251. Flatten 2D Vector
• 😊 [Q] [S] 0252. Meeting Rooms
• 🤨 [Q] [S] 0253. Meeting Rooms II
• 🤨 [Q] [S] 0254. Factor Combinations
• 🤨 [Q] [S] 0255. Verify Preorder Sequence in Binary Search Tree
• 🤨 [Q] [S] 0256. Paint House
• 😊 [Q] [S] 0257. Binary Tree Paths
• 🤨 [Q] [S] 0259. 3Sum Smaller
• 🤨 [Q] [S] 0261. Graph Valid Tree
• 😫 [Q] [S] 0265. Paint House II
• 😊 [Q] [S] 0266. Palindrome Permutation
• 🤨 [Q] [S] 0267. Palindrome Permutation II
• 😫 [Q] [S] 0269. Alien Dictionary
• 😊 [Q] [S] 0270. Closest Binary Search Tree Value
• 🤨 [Q] [S] 0271. Encode and Decode Strings
• 😫 [Q] [S] 0272. Closest Binary Search Tree Value II
• 😫 [Q] [S] 0273. Integer to English Words
• 🤨 [Q] [S] 0276. Paint Fence
• 🤨 [Q] [S] 0277. Find the Celebrity
• 🤨 [Q] [S] 0280. Wiggle Sort
• 🤨 [Q] [S] 0281. Zigzag Iterator
• 😫 [Q] [S] 0282. Expression Add Operators
• 😊 [Q] [S] 0283. Move Zeroes
• 🤨 [Q] [S] 0285. Inorder Successor in BST
• 🤨 [Q] [S] 0286. Walls and Gates
• 🤨 [Q] [S] 0288. Unique Word Abbreviation
• 🤨 [Q] [S] 0289. Game of Life
• 🤨 [Q] [S] 0291. Word Pattern II
• 😊 [Q] [S] 0292. Nim Game
• 😊 [Q] [S] 0293. Flip Game
• 🤨 [Q] [S] 0294. Flip Game II
• 😫 [Q] [S] 0296. Best Meeting Point
• 😫 [Q] [S] 0297. Serialize and Deserialize Binary Tree
• 🤨 [Q] [S] 0298. Binary Tree Longest Consecutive Sequence
• 😫 [Q] [S] 0301. Remove Invalid Parentheses
• 😫 [Q] [S] 0302. Smallest Rectangle Enclosing Black Pixels
• 😊 [Q] [S] 0303. Range Sum Query - Immutable
• 🤨 [Q] [S] 0304. Range Sum Query 2D - Immutable
• 😫 [Q] [S] 0305. Number of Islands II
• 🤨 [Q] [S] 0306. Additive Number
• 🤨 [Q] [S] 0307. Range Sum Query - Mutable
• 😫 [Q] [S] 0308. Range Sum Query 2D - Mutable
• 🤨 [Q] [S] 0311. Sparse Matrix Multiplication
• 😫 [Q] [S] 0312. Burst Balloons
• 🤨 [Q] [S] 0313. Super Ugly Number
• 🤨 [Q] [S] 0314. Binary Tree Vertical Order Traversal
• 😫 [Q] [S] 0317. Shortest Distance from All Buildings
• 🤨 [Q] [S] 0318. Maximum Product of Word Lengths
• 🤨 [Q] [S] 0319. Bulb Switcher
• 🤨 [Q] [S] 0320. Generalized Abbreviation
• 😫 [Q] [S] 0321. Create Maximum Number
• 🤨 [Q] [S] 0322. Coin Change
• 🤨 [Q] [S] 0323. Number of Connected Components in an Undirected Graph
• 🤨 [Q] [S] 0324. Wiggle Sort II
• 🤨 [Q] [S] 0325. Maximum Size Subarray Sum Equals k
• 😫 [Q] [S] 0327. Count of Range Sum
• 😫 [Q] [S] 0330. Patching Array
• 🤨 [Q] [S] 0331. Verify Preorder Serialization of a Binary Tree
• 🤨 [Q] [S] 0333. Largest BST Subtree
• 🤨 [Q] [S] 0334. Increasing Triplet Subsequence
• 😫 [Q] [S] 0335. Self Crossing
• 😫 [Q] [S] 0336. Palindrome Pairs
• 🤨 [Q] [S] 0337. House Robber III
• 🤨 [Q] [S] 0339. Nested List Weight Sum
• 🤨 [Q] [S] 0340. Longest Substring with At Most K Distinct Characters
• 🤨 [Q] [S] 0341. Flatten Nested List Iterator
• 🤨 [Q] [S] 0343. Integer Break
• 😊 [Q] [S] 0345. Reverse Vowels of a String
• 😊 [Q] [S] 0346. Moving Average from Data Stream
• 🤨 [Q] [S] 0348. Design Tic-Tac-Toe
• 😊 [Q] [S] 0349. Intersection of Two Arrays
• 🤨 [Q] [S] 0351. Android Unlock Patterns
• 😫 [Q] [S] 0352. Data Stream as Disjoint Intervals
• 🤨 [Q] [S] 0353. Design Snake Game
• 😫 [Q] [S] 0354. Russian Doll Envelopes
• 🤨 [Q] [S] 0355. Design Twitter
• 🤨 [Q] [S] 0356. Line Reflection
• 🤨 [Q] [S] 0357. Count Numbers with Unique Digits
• 😫 [Q] [S] 0358. Rearrange String k Distance Apart
• 😊 [Q] [S] 0359. Logger Rate Limiter
• 🤨 [Q] [S] 0360. Sort Transformed Array
• 🤨 [Q] [S] 0361. Bomb Enemy
• 🤨 [Q] [S] 0362. Design Hit Counter
• 😫 [Q] [S] 0363. Max Sum of Rectangle No Larger Than K
• 🤨 [Q] [S] 0364. Nested List Weight Sum II
• 🤨 [Q] [S] 0365. Water and Jug Problem
• 🤨 [Q] [S] 0366. Find Leaves of Binary Tree
• 🤨 [Q] [S] 0369. Plus One Linked List
• 🤨 [Q] [S] 0370. Range Addition
• 🤨 [Q] [S] 0371. Sum of Two Integers
• 🤨 [Q] [S] 0373. Find K Pairs with Smallest Sums
• 😊 [Q] [S] 0374. Guess Number Higher or Lower
• 🤨 [Q] [S] 0375. Guess Number Higher or Lower II
• 🤨 [Q] [S] 0376. Wiggle Subsequence
• 🤨 [Q] [S] 0378. Kth Smallest Element in a Sorted Matrix
• 🤨 [Q] [S] 0379. Design Phone Directory
• 😫 [Q] [S] 0381. Insert Delete GetRandom O(1) - Duplicates allowed
• 🤨 [Q] [S] 0382. Linked List Random Node
• 🤨 [Q] [S] 0384. Shuffle an Array
• 🤨 [Q] [S] 0385. Mini Parser
• 🤨 [Q] [S] 0386. Lexicographical Numbers
• 🤨 [Q] [S] 0388. Longest Absolute File Path
• 🤨 [Q] [S] 0390. Elimination Game
• 😫 [Q] [S] 0391. Perfect Rectangle
• 🤨 [Q] [S] 0393. UTF-8 Validation
• 🤨 [Q] [S] 0394. Decode String
• 🤨 [Q] [S] 0395. Longest Substring with At Least K Repeating Characters
• 🤨 [Q] [S] 0396. Rotate Function
• 🤨 [Q] [S] 0398. Random Pick Index
• 🤨 [Q] [S] 0400. Nth Digit
• 😊 [Q] [S] 0401. Binary Watch
• 😫 [Q] [S] 0403. Frog Jump
• 😊 [Q] [S] 0405. Convert a Number to Hexadecimal
• 😫 [Q] [S] 0407. Trapping Rain Water II
• 😊 [Q] [S] 0408. Valid Word Abbreviation
• 😫 [Q] [S] 0411. Minimum Unique Word Abbreviation
• 😊 [Q] [S] 0414. Third Maximum Number
• 😊 [Q] [S] 0415. Add Strings
• 🤨 [Q] [S] 0416. Partition Equal Subset Sum
• 🤨 [Q] [S] 0418. Sentence Screen Fitting
• 🤨 [Q] [S] 0419. Battleships in a Board
• 😫 [Q] [S] 0420. Strong Password Checker
• 😊 [Q] [S] 0422. Valid Word Square
• 🤨 [Q] [S] 0423. Reconstruct Original Digits from English
• 🤨 [Q] [S] 0424. Longest Repeating Character Replacement
• 😫 [Q] [S] 0425. Word Squares
• 🤨 [Q] [S] 0426. Convert Binary Search Tree to Sorted Doubly Linked List
• 🤨 [Q] [S] 0427. Construct Quad Tree
• 😫 [Q] [S] 0428. Serialize and Deserialize N-ary Tree
• 🤨 [Q] [S] 0429. N-ary Tree Level Order Traversal
• 😫 [Q] [S] 0431. Encode N-ary Tree to Binary Tree
• 😫 [Q] [S] 0432. All O`one Data Structure
• 🤨 [Q] [S] 0433. Minimum Genetic Mutation
• 😊 [Q] [S] 0434. Number of Segments in a String
• 🤨 [Q] [S] 0439. Ternary Expression Parser
• 😫 [Q] [S] 0440. K-th Smallest in Lexicographical Order
• 🤨 [Q] [S] 0443. String Compression
• 🤨 [Q] [S] 0444. Sequence Reconstruction
• 🤨 [Q] [S] 0445. Add Two Numbers II
• 😫 [Q] [S] 0446. Arithmetic Slices II - Subsequence
• 🤨 [Q] [S] 0447. Number of Boomerangs
• 😊 [Q] [S] 0448. Find All Numbers Disappeared in an Array
• 😊 [Q] [S] 0453. Minimum Moves to Equal Array Elements
• 🤨 [Q] [S] 0454. 4Sum II
• 🤨 [Q] [S] 0457. Circular Array Loop
• 😫 [Q] [S] 0458. Poor Pigs
• 😫 [Q] [S] 0460. LFU Cache
• 🤨 [Q] [S] 0462. Minimum Moves to Equal Array Elements II
• 🤨 [Q] [S] 0464. Can I Win
• 😫 [Q] [S] 0465. Optimal Account Balancing
• 😫 [Q] [S] 0466. Count The Repetitions
• 🤨 [Q] [S] 0467. Unique Substrings in Wraparound String
• 🤨 [Q] [S] 0469. Convex Polygon
• 😫 [Q] [S] 0471. Encode String with Shortest Length
• 🤨 [Q] [S] 0473. Matchsticks to Square
• 🤨 [Q] [S] 0474. Ones and Zeroes
• 🤨 [Q] [S] 0475. Heaters
• 🤨 [Q] [S] 0478. Generate Random Point in a Circle
• 😫 [Q] [S] 0479. Largest Palindrome Product
• 😫 [Q] [S] 0480. Sliding Window Median
• 🤨 [Q] [S] 0481. Magical String
• 😊 [Q] [S] 0482. License Key Formatting
• 😫 [Q] [S] 0483. Smallest Good Base
• 🤨 [Q] [S] 0484. Find Permutation
• 😊 [Q] [S] 0485. Max Consecutive Ones
• 🤨 [Q] [S] 0487. Max Consecutive Ones II
• 😫 [Q] [S] 0488. Zuma Game
• 😫 [Q] [S] 0489. Robot Room Cleaner
• 🤨 [Q] [S] 0490. The Maze
• 🤨 [Q] [S] 0491. Increasing Subsequences
• 🤨 [Q] [S] 0494. Target Sum
• 😊 [Q] [S] 0496. Next Greater Element I
• 🤨 [Q] [S] 0498. Diagonal Traverse
• 😫 [Q] [S] 0499. The Maze III
• 😊 [Q] [S] 0500. Keyboard Row
• 😊 [Q] [S] 0501. Find Mode in Binary Search Tree
• 😫 [Q] [S] 0502. IPO
• 🤨 [Q] [S] 0503. Next Greater Element II
• 😊 [Q] [S] 0504. Base 7
• 🤨 [Q] [S] 0505. The Maze II
• 😊 [Q] [S] 0507. Perfect Number
• 🤨 [Q] [S] 0508. Most Frequent Subtree Sum
• 😊 [Q] [S] 0509. Fibonacci Number
• 🤨 [Q] [S] 0510. Inorder Successor in BST II
• 🤨 [Q] [S] 0513. Find Bottom Left Tree Value
• 😫 [Q] [S] 0514. Freedom Trail
• 🤨 [Q] [S] 0516. Longest Palindromic Subsequence
• 😫 [Q] [S] 0517. Super Washing Machines
• 🤨 [Q] [S] 0519. Random Flip Matrix
• 😊 [Q] [S] 0521. Longest Uncommon Subsequence I
• 🤨 [Q] [S] 0522. Longest Uncommon Subsequence II
• 🤨 [Q] [S] 0523. Continuous Subarray Sum
• 🤨 [Q] [S] 0524. Longest Word in Dictionary through Deleting
• 🤨 [Q] [S] 0526. Beautiful Arrangement
• 😫 [Q] [S] 0527. Word Abbreviation
• 🤨 [Q] [S] 0529. Minesweeper
• 😊 [Q] [S] 0530. Minimum Absolute Difference in BST
• 🤨 [Q] [S] 0531. Lonely Pixel I
• 🤨 [Q] [S] 0533. Lonely Pixel II
• 🤨 [Q] [S] 0535. Encode and Decode TinyURL
• 🤨 [Q] [S] 0536. Construct Binary Tree from String
• 🤨 [Q] [S] 0537. Complex Number Multiplication
• 🤨 [Q] [S] 0538. Convert BST to Greater Tree
• 🤨 [Q] [S] 0539. Minimum Time Difference
• 😊 [Q] [S] 0541. Reverse String II
• 🤨 [Q] [S] 0542. 01 Matrix
• 😊 [Q] [S] 0543. Diameter of Binary Tree
• 🤨 [Q] [S] 0544. Output Contest Matches
• 🤨 [Q] [S] 0545. Boundary of Binary Tree
• 😫 [Q] [S] 0546. Remove Boxes
• 🤨 [Q] [S] 0547. Number of Provinces
• 🤨 [Q] [S] 0548. Split Array with Equal Sum
• 🤨 [Q] [S] 0549. Binary Tree Longest Consecutive Sequence II
• 😊 [Q] [S] 0551. Student Attendance Record I
• 😫 [Q] [S] 0552. Student Attendance Record II
• 🤨 [Q] [S] 0553. Optimal Division
• 🤨 [Q] [S] 0554. Brick Wall
• 🤨 [Q] [S] 0555. Split Concatenated Strings
• 🤨 [Q] [S] 0556. Next Greater Element III
• 😊 [Q] [S] 0557. Reverse Words in a String III
• 🤨 [Q] [S] 0558. Logical OR of Two Binary Grids Represented as Quad-Trees
• 🤨 [Q] [S] 0560. Subarray Sum Equals K
• 😊 [Q] [S] 0561. Array Partition I
• 🤨 [Q] [S] 0562. Longest Line of Consecutive One in Matrix
• 😊 [Q] [S] 0563. Binary Tree Tilt
• 😫 [Q] [S] 0564. Find the Closest Palindrome
• 🤨 [Q] [S] 0565. Array Nesting
• 😊 [Q] [S] 0566. Reshape the Matrix
• 😫 [Q] [S] 0568. Maximum Vacation Days
• 😊 [Q] [S] 0572. Subtree of Another Tree
• 🤨 [Q] [S] 0573. Squirrel Simulation
• 😊 [Q] [S] 0575. Distribute Candies
• 🤨 [Q] [S] 0576. Out of Boundary Paths
• 🤨 [Q] [S] 0582. Kill Process
• 🤨 [Q] [S] 0583. Delete Operation for Two Strings
• 😫 [Q] [S] 0587. Erect the Fence
• 😫 [Q] [S] 0588. Design In-Memory File System
• 😊 [Q] [S] 0589. N-ary Tree Preorder Traversal
• 😊 [Q] [S] 0590. N-ary Tree Postorder Traversal
• 😫 [Q] [S] 0591. Tag Validator
• 🤨 [Q] [S] 0592. Fraction Addition and Subtraction
• 😊 [Q] [S] 0598. Range Addition II
• 😊 [Q] [S] 0599. Minimum Index Sum of Two Lists
• 😊 [Q] [S] 0604. Design Compressed String Iterator
• 😊 [Q] [S] 0605. Can Place Flowers
• 😊 [Q] [S] 0606. Construct String from Binary Tree
• 🤨 [Q] [S] 0609. Find Duplicate File in System
• 🤨 [Q] [S] 0611. Valid Triangle Number
• 🤨 [Q] [S] 0616. Add Bold Tag in String
• 😊 [Q] [S] 0617. Merge Two Binary Trees
• 🤨 [Q] [S] 0622. Design Circular Queue
• 🤨 [Q] [S] 0623. Add One Row to Tree
• 🤨 [Q] [S] 0624. Maximum Distance in Arrays
• 🤨 [Q] [S] 0625. Minimum Factorization
• 😊 [Q] [S] 0628. Maximum Product of Three Numbers
• 😫 [Q] [S] 0629. K Inverse Pairs Array
• 😫 [Q] [S] 0631. Design Excel Sum Formula
• 😫 [Q] [S] 0632. Smallest Range Covering Elements from K Lists
• 🤨 [Q] [S] 0633. Sum of Square Numbers
• 🤨 [Q] [S] 0634. Find the Derangement of An Array
• 🤨 [Q] [S] 0635. Design Log Storage System
• 🤨 [Q] [S] 0636. Exclusive Time of Functions
• 😊 [Q] [S] 0637. Average of Levels in Binary Tree
• 🤨 [Q] [S] 0638. Shopping Offers
• 😫 [Q] [S] 0639. Decode Ways II
• 🤨 [Q] [S] 0640. Solve the Equation
• 🤨 [Q] [S] 0641. Design Circular Deque
• 😫 [Q] [S] 0642. Design Search Autocomplete System
• 😊 [Q] [S] 0643. Maximum Average Subarray I
• 😫 [Q] [S] 0644. Maximum Average Subarray II
• 😊 [Q] [S] 0645. Set Mismatch
• 🤨 [Q] [S] 0646. Maximum Length of Pair Chain
• 🤨 [Q] [S] 0647. Palindromic Substrings
• 🤨 [Q] [S] 0648. Replace Words
• 🤨 [Q] [S] 0649. Dota2 Senate
• 🤨 [Q] [S] 0650. 2 Keys Keyboard
• 🤨 [Q] [S] 0651. 4 Keys Keyboard
• 🤨 [Q] [S] 0652. Find Duplicate Subtrees
• 😊 [Q] [S] 0653. Two Sum IV - Input is a BST
• 🤨 [Q] [S] 0654. Maximum Binary Tree
• 🤨 [Q] [S] 0655. Print Binary Tree
• 😫 [Q] [S] 0656. Coin Path
• 😊 [Q] [S] 0657. Robot Return to Origin
• 🤨 [Q] [S] 0658. Find K Closest Elements
• 🤨 [Q] [S] 0659. Split Array into Consecutive Subsequences
• 😫 [Q] [S] 0660. Remove 9
• 😊 [Q] [S] 0661. Image Smoother
• 🤨 [Q] [S] 0663. Equal Tree Partition
• 😫 [Q] [S] 0664. Strange Printer
• 🤨 [Q] [S] 0665. Non-decreasing Array
• 🤨 [Q] [S] 0666. Path Sum IV
• 🤨 [Q] [S] 0667. Beautiful Arrangement II
• 😫 [Q] [S] 0668. Kth Smallest Number in Multiplication Table
• 🤨 [Q] [S] 0670. Maximum Swap
• 😊 [Q] [S] 0671. Second Minimum Node In a Binary Tree
• 🤨 [Q] [S] 0672. Bulb Switcher II
• 🤨 [Q] [S] 0673. Number of Longest Increasing Subsequence
• 😊 [Q] [S] 0674. Longest Continuous Increasing Subsequence
• 😫 [Q] [S] 0675. Cut Off Trees for Golf Event
• 🤨 [Q] [S] 0676. Implement Magic Dictionary
• 🤨 [Q] [S] 0677. Map Sum Pairs
• 🤨 [Q] [S] 0678. Valid Parenthesis String
• 😫 [Q] [S] 0679. 24 Game
• 😊 [Q] [S] 0680. Valid Palindrome II
• 🤨 [Q] [S] 0681. Next Closest Time
• 😊 [Q] [S] 0682. Baseball Game
• 😫 [Q] [S] 0683. K Empty Slots
• 😫 [Q] [S] 0685. Redundant Connection II
• 🤨 [Q] [S] 0687. Longest Univalue Path
• 🤨 [Q] [S] 0688. Knight Probability in Chessboard
• 😫 [Q] [S] 0689. Maximum Sum of 3 Non-Overlapping Subarrays
• 😊 [Q] [S] 0690. Employee Importance
• 😫 [Q] [S] 0691. Stickers to Spell Word
• 🤨 [Q] [S] 0692. Top K Frequent Words
• 🤨 [Q] [S] 0694. Number of Distinct Islands
• 🤨 [Q] [S] 0695. Max Area of Island
• 😊 [Q] [S] 0696. Count Binary Substrings
• 😊 [Q] [S] 0697. Degree of an Array
• 🤨 [Q] [S] 0698. Partition to K Equal Sum Subsets
• 😫 [Q] [S] 0699. Falling Squares
• 🤨 [Q] [S] 0702. Search in a Sorted Array of Unknown Size
• 😊 [Q] [S] 0703. Kth Largest Element in a Stream
• 😊 [Q] [S] 0706. Design HashMap
• 🤨 [Q] [S] 0707. Design Linked List
• 🤨 [Q] [S] 0708. Insert into a Sorted Circular Linked List
• 😊 [Q] [S] 0709. To Lower Case
• 😫 [Q] [S] 0711. Number of Distinct Islands II
• 🤨 [Q] [S] 0712. Minimum ASCII Delete Sum for Two Strings
• 😫 [Q] [S] 0715. Range Module
• 😊 [Q] [S] 0716. Max Stack
• 😊 [Q] [S] 0717. 1-bit and 2-bit Characters
• 😫 [Q] [S] 0719. Find K-th Smallest Pair Distance
• 😊 [Q] [S] 0720. Longest Word in Dictionary
• 🤨 [Q] [S] 0721. Accounts Merge
• 🤨 [Q] [S] 0722. Remove Comments
• 🤨 [Q] [S] 0723. Candy Crush
• 😊 [Q] [S] 0724. Find Pivot Index
• 😫 [Q] [S] 0726. Number of Atoms
• 😫 [Q] [S] 0727. Minimum Window Subsequence
• 😊 [Q] [S] 0728. Self Dividing Numbers
• 🤨 [Q] [S] 0729. My Calendar I
• 😫 [Q] [S] 0730. Count Different Palindromic Subsequences
• 🤨 [Q] [S] 0731. My Calendar II
• 😫 [Q] [S] 0732. My Calendar III
• 😊 [Q] [S] 0734. Sentence Similarity
• 😫 [Q] [S] 0736. Parse Lisp Expression
• 🤨 [Q] [S] 0737. Sentence Similarity II
• 🤨 [Q] [S] 0738. Monotone Increasing Digits
• 🤨 [Q] [S] 0739. Daily Temperatures
• 🤨 [Q] [S] 0740. Delete and Earn
• 😫 [Q] [S] 0741. Cherry Pickup
• 🤨 [Q] [S] 0742. Closest Leaf in a Binary Tree
• 😊 [Q] [S] 0744. Find Smallest Letter Greater Than Target
• 😫 [Q] [S] 0745. Prefix and Suffix Search
• 😊 [Q] [S] 0747. Largest Number At Least Twice of Others
• 😊 [Q] [S] 0748. Shortest Completing Word
• 😫 [Q] [S] 0749. Contain Virus
• 🤨 [Q] [S] 0750. Number Of Corner Rectangles
• 🤨 [Q] [S] 0751. IP to CIDR
• 🤨 [Q] [S] 0752. Open the Lock
• 😫 [Q] [S] 0753. Cracking the Safe
• 🤨 [Q] [S] 0754. Reach a Number
• 🤨 [Q] [S] 0755. Pour Water
• 🤨 [Q] [S] 0756. Pyramid Transition Matrix
• 😫 [Q] [S] 0757. Set Intersection Size At Least Two
• 😊 [Q] [S] 0758. Bold Words in String
• 😫 [Q] [S] 0759. Employee Free Time
• 😊 [Q] [S] 0760. Find Anagram Mappings
• 😫 [Q] [S] 0761. Special Binary String
• 😊 [Q] [S] 0762. Prime Number of Set Bits in Binary Representation
• 🤨 [Q] [S] 0764. Largest Plus Sign
• 😫 [Q] [S] 0765. Couples Holding Hands
• 😊 [Q] [S] 0766. Toeplitz Matrix
• 🤨 [Q] [S] 0767. Reorganize String
• 😫 [Q] [S] 0768. Max Chunks To Make Sorted II
• 🤨 [Q] [S] 0769. Max Chunks To Make Sorted
• 😫 [Q] [S] 0770. Basic Calculator IV
• 😫 [Q] [S] 0772. Basic Calculator III
• 😫 [Q] [S] 0773. Sliding Puzzle
• 😫 [Q] [S] 0774. Minimize Max Distance to Gas Station
• 🤨 [Q] [S] 0775. Global and Local Inversions
• 🤨 [Q] [S] 0776. Split BST
• 🤨 [Q] [S] 0777. Swap Adjacent in LR String
• 😫 [Q] [S] 0778. Swim in Rising Water
• 🤨 [Q] [S] 0779. K-th Symbol in Grammar
• 😫 [Q] [S] 0780. Reaching Points
• 🤨 [Q] [S] 0781. Rabbits in Forest
• 😫 [Q] [S] 0782. Transform to Chessboard
• 😊 [Q] [S] 0783. Minimum Distance Between BST Nodes
• 😫 [Q] [S] 0786. K-th Smallest Prime Fraction
• 😊 [Q] [S] 0788. Rotated Digits
• 🤨 [Q] [S] 0789. Escape The Ghosts
• 🤨 [Q] [S] 0790. Domino and Tromino Tiling
• 🤨 [Q] [S] 0791. Custom Sort String
• 🤨 [Q] [S] 0792. Number of Matching Subsequences
• 😫 [Q] [S] 0793. Preimage Size of Factorial Zeroes Function
• 🤨 [Q] [S] 0794. Valid Tic-Tac-Toe State
• 🤨 [Q] [S] 0795. Number of Subarrays with Bounded Maximum
• 😊 [Q] [S] 0796. Rotate String
• 😫 [Q] [S] 0798. Smallest Rotation with Highest Score
• 😊 [Q] [S] 0800. Similar RGB Color
• 🤨 [Q] [S] 0801. Minimum Swaps To Make Sequences Increasing
• 🤨 [Q] [S] 0802. Find Eventual Safe States
• 😫 [Q] [S] 0803. Bricks Falling When Hit
• 😊 [Q] [S] 0804. Unique Morse Code Words
• 😫 [Q] [S] 0805. Split Array With Same Average
• 😊 [Q] [S] 0806. Number of Lines To Write String
• 🤨 [Q] [S] 0807. Max Increase to Keep City Skyline
• 🤨 [Q] [S] 0808. Soup Servings
• 🤨 [Q] [S] 0809. Expressive Words
• 😫 [Q] [S] 0810. Chalkboard XOR Game
• 😊 [Q] [S] 0811. Subdomain Visit Count
• 😊 [Q] [S] 0812. Largest Triangle Area
• 🤨 [Q] [S] 0813. Largest Sum of Averages
• 🤨 [Q] [S] 0814. Binary Tree Pruning
• 🤨 [Q] [S] 0816. Ambiguous Coordinates
• 🤨 [Q] [S] 0817. Linked List Components
• 😫 [Q] [S] 0818. Race Car
• 😊 [Q] [S] 0819. Most Common Word
• 🤨 [Q] [S] 0820. Short Encoding of Words
• 🤨 [Q] [S] 0822. Card Flipping Game
• 🤨 [Q] [S] 0823. Binary Trees With Factors
• 🤨 [Q] [S] 0825. Friends Of Appropriate Ages
• 🤨 [Q] [S] 0826. Most Profit Assigning Work
• 😫 [Q] [S] 0827. Making A Large Island
• 😫 [Q] [S] 0828. Count Unique Characters of All Substrings of a Given String
• 😫 [Q] [S] 0829. Consecutive Numbers Sum
• 😊 [Q] [S] 0830. Positions of Large Groups
• 🤨 [Q] [S] 0831. Masking Personal Information
• 🤨 [Q] [S] 0833. Find And Replace in String
• 😫 [Q] [S] 0834. Sum of Distances in Tree
• 😊 [Q] [S] 0836. Rectangle Overlap
• 🤨 [Q] [S] 0837. New 21 Game
• 🤨 [Q] [S] 0838. Push Dominoes
• 🤨 [Q] [S] 0840. Magic Squares In Grid
• 🤨 [Q] [S] 0842. Split Array into Fibonacci Sequence
• 😫 [Q] [S] 0843. Guess the Word
• 😊 [Q] [S] 0844. Backspace String Compare
• 🤨 [Q] [S] 0845. Longest Mountain in Array
• 🤨 [Q] [S] 0846. Hand of Straights
• 😫 [Q] [S] 0847. Shortest Path Visiting All Nodes
• 🤨 [Q] [S] 0851. Loud and Rich
• 😊 [Q] [S] 0852. Peak Index in a Mountain Array
• 🤨 [Q] [S] 0853. Car Fleet
• 😫 [Q] [S] 0854. K-Similar Strings
• 🤨 [Q] [S] 0855. Exam Room
• 🤨 [Q] [S] 0856. Score of Parentheses
• 🤨 [Q] [S] 0858. Mirror Reflection
• 😊 [Q] [S] 0860. Lemonade Change
• 🤨 [Q] [S] 0861. Score After Flipping Matrix
• 😫 [Q] [S] 0862. Shortest Subarray with Sum at Least K
• 🤨 [Q] [S] 0863. All Nodes Distance K in Binary Tree
• 😫 [Q] [S] 0864. Shortest Path to Get All Keys
• 🤨 [Q] [S] 0865. Smallest Subtree with all the Deepest Nodes
• 🤨 [Q] [S] 0866. Prime Palindrome
• 😊 [Q] [S] 0867. Transpose Matrix
• 😊 [Q] [S] 0868. Binary Gap
• 🤨 [Q] [S] 0869. Reordered Power of 2
• 🤨 [Q] [S] 0870. Advantage Shuffle
• 😫 [Q] [S] 0871. Minimum Number of Refueling Stops
• 😊 [Q] [S] 0872. Leaf-Similar Trees
• 🤨 [Q] [S] 0873. Length of Longest Fibonacci Subsequence
• 😊 [Q] [S] 0874. Walking Robot Simulation
• 🤨 [Q] [S] 0875. Koko Eating Bananas
• 😊 [Q] [S] 0876. Middle of the Linked List
• 🤨 [Q] [S] 0877. Stone Game
• 😫 [Q] [S] 0878. Nth Magical Number
• 😫 [Q] [S] 0879. Profitable Schemes
• 🤨 [Q] [S] 0880. Decoded String at Index
• 😫 [Q] [S] 0882. Reachable Nodes In Subdivided Graph
• 😊 [Q] [S] 0883. Projection Area of 3D Shapes
• 😊 [Q] [S] 0884. Uncommon Words from Two Sentences
• 🤨 [Q] [S] 0885. Spiral Matrix III
• 😊 [Q] [S] 0888. Fair Candy Swap
• 🤨 [Q] [S] 0889. Construct Binary Tree from Preorder and Postorder Traversal
• 🤨 [Q] [S] 0890. Find and Replace Pattern
• 😫 [Q] [S] 0891. Sum of Subsequence Widths
• 😊 [Q] [S] 0892. Surface Area of 3D Shapes
• 😊 [Q] [S] 0893. Groups of Special-Equivalent Strings
• 🤨 [Q] [S] 0894. All Possible Full Binary Trees
• 😫 [Q] [S] 0895. Maximum Frequency Stack
• 😊 [Q] [S] 0897. Increasing Order Search Tree
• 🤨 [Q] [S] 0898. Bitwise ORs of Subarrays
• 😫 [Q] [S] 0899. Orderly Queue
• 🤨 [Q] [S] 0900. RLE Iterator
• 😫 [Q] [S] 0902. Numbers At Most N Given Digit Set
• 😫 [Q] [S] 0903. Valid Permutations for DI Sequence
• 🤨 [Q] [S] 0904. Fruit Into Baskets
• 😫 [Q] [S] 0906. Super Palindromes
• 🤨 [Q] [S] 0907. Sum of Subarray Minimums
• 😊 [Q] [S] 0908. Smallest Range I
• 🤨 [Q] [S] 0909. Snakes and Ladders
• 🤨 [Q] [S] 0910. Smallest Range II
• 🤨 [Q] [S] 0911. Online Election
• 😫 [Q] [S] 0913. Cat and Mouse
• 😊 [Q] [S] 0914. X of a Kind in a Deck of Cards
• 🤨 [Q] [S] 0915. Partition Array into Disjoint Intervals
• 🤨 [Q] [S] 0916. Word Subsets
• 😊 [Q] [S] 0917. Reverse Only Letters
• 🤨 [Q] [S] 0919. Complete Binary Tree Inserter
• 🤨 [Q] [S] 0923. 3Sum With Multiplicity
• 😫 [Q] [S] 0924. Minimize Malware Spread
• 😊 [Q] [S] 0925. Long Pressed Name
• 🤨 [Q] [S] 0926. Flip String to Monotone Increasing
• 😫 [Q] [S] 0927. Three Equal Parts
• 😫 [Q] [S] 0928. Minimize Malware Spread II
• 😊 [Q] [S] 0929. Unique Email Addresses
• 🤨 [Q] [S] 0930. Binary Subarrays With Sum
• 🤨 [Q] [S] 0932. Beautiful Array
• 🤨 [Q] [S] 0934. Shortest Bridge
• 🤨 [Q] [S] 0935. Knight Dialer
• 😊 [Q] [S] 0937. Reorder Data in Log Files
• 😊 [Q] [S] 0938. Range Sum of BST
• 🤨 [Q] [S] 0939. Minimum Area Rectangle
• 😫 [Q] [S] 0940. Distinct Subsequences II
• 😊 [Q] [S] 0941. Valid Mountain Array
• 😊 [Q] [S] 0942. DI String Match
• 😫 [Q] [S] 0943. Find the Shortest Superstring
• 😊 [Q] [S] 0944. Delete Columns to Make Sorted
• 🤨 [Q] [S] 0945. Minimum Increment to Make Array Unique
• 🤨 [Q] [S] 0947. Most Stones Removed with Same Row or Column
• 🤨 [Q] [S] 0950. Reveal Cards In Increasing Order
• 🤨 [Q] [S] 0951. Flip Equivalent Binary Trees
• 😊 [Q] [S] 0953. Verifying an Alien Dictionary
• 🤨 [Q] [S] 0954. Array of Doubled Pairs
• 🤨 [Q] [S] 0955. Delete Columns to Make Sorted II
• 😫 [Q] [S] 0956. Tallest Billboard
• 🤨 [Q] [S] 0958. Check Completeness of a Binary Tree
• 😫 [Q] [S] 0960. Delete Columns to Make Sorted III
• 😊 [Q] [S] 0961. N-Repeated Element in Size 2N Array
• 🤨 [Q] [S] 0963. Minimum Area Rectangle II
• 😫 [Q] [S] 0964. Least Operators to Express Number
• 😊 [Q] [S] 0965. Univalued Binary Tree
• 🤨 [Q] [S] 0966. Vowel Spellchecker
• 😫 [Q] [S] 0968. Binary Tree Cameras
• 🤨 [Q] [S] 0970. Powerful Integers
• 🤨 [Q] [S] 0971. Flip Binary Tree To Match Preorder Traversal
• 😫 [Q] [S] 0972. Equal Rational Numbers
• 😫 [Q] [S] 0975. Odd Even Jump
• 😊 [Q] [S] 0976. Largest Perimeter Triangle
• 😊 [Q] [S] 0977. Squares of a Sorted Array
• 🤨 [Q] [S] 0979. Distribute Coins in Binary Tree
• 🤨 [Q] [S] 0981. Time Based Key-Value Store
• 😫 [Q] [S] 0982. Triples with Bitwise AND Equal To Zero
• 😊 [Q] [S] 0985. Sum of Even Numbers After Queries
• 🤨 [Q] [S] 0988. Smallest String Starting From Leaf
• 😊 [Q] [S] 0989. Add to Array-Form of Integer
• 😫 [Q] [S] 0992. Subarrays with K Different Integers
• 😫 [Q] [S] 0995. Minimum Number of K Consecutive Bit Flips
• 😫 [Q] [S] 0996. Number of Squareful Arrays
• 🤨 [Q] [S] 0998. Maximum Binary Tree II
• 😊 [Q] [S] 0999. Available Captures for Rook
• 😫 [Q] [S] 1000. Minimum Cost to Merge Stones
• 😫 [Q] [S] 1001. Grid Illumination
• 😊 [Q] [S] 1002. Find Common Characters
• 🤨 [Q] [S] 1003. Check If Word Is Valid After Substitutions
• 🤨 [Q] [S] 1004. Max Consecutive Ones III
• 😊 [Q] [S] 1005. Maximize Sum Of Array After K Negations
• 🤨 [Q] [S] 1006. Clumsy Factorial
• 🤨 [Q] [S] 1010. Pairs of Songs With Total Durations Divisible by 60
• 🤨 [Q] [S] 1011. Capacity To Ship Packages Within D Days
• 😫 [Q] [S] 1012. Numbers With Repeated Digits
• 😊 [Q] [S] 1013. Partition Array Into Three Parts With Equal Sum
• 🤨 [Q] [S] 1014. Best Sightseeing Pair
• 🤨 [Q] [S] 1016. Binary String With Substrings Representing 1 To N
• 🤨 [Q] [S] 1017. Convert to Base -2
• 😊 [Q] [S] 1018. Binary Prefix Divisible By 5
• 🤨 [Q] [S] 1019. Next Greater Node In Linked List
• 🤨 [Q] [S] 1020. Number of Enclaves
• 🤨 [Q] [S] 1023. Camelcase Matching
• 🤨 [Q] [S] 1024. Video Stitching
• 🤨 [Q] [S] 1026. Maximum Difference Between Node and Ancestor
• 🤨 [Q] [S] 1027. Longest Arithmetic Subsequence
• 😫 [Q] [S] 1028. Recover a Tree From Preorder Traversal
• 😊 [Q] [S] 1030. Matrix Cells in Distance Order
• 🤨 [Q] [S] 1031. Maximum Sum of Two Non-Overlapping Subarrays
• 😊 [Q] [S] 1033. Moving Stones Until Consecutive
• 🤨 [Q] [S] 1034. Coloring A Border
• 😫 [Q] [S] 1036. Escape a Large Maze
• 😊 [Q] [S] 1037. Valid Boomerang
• 🤨 [Q] [S] 1038. Binary Search Tree to Greater Sum Tree
• 🤨 [Q] [S] 1039. Minimum Score Triangulation of Polygon
• 🤨 [Q] [S] 1040. Moving Stones Until Consecutive II
• 🤨 [Q] [S] 1042. Flower Planting With No Adjacent
• 😊 [Q] [S] 1046. Last Stone Weight
• 😊 [Q] [S] 1047. Remove All Adjacent Duplicates In String
• 🤨 [Q] [S] 1048. Longest String Chain
• 🤨 [Q] [S] 1049. Last Stone Weight II
• 😊 [Q] [S] 1051. Height Checker
• 🤨 [Q] [S] 1052. Grumpy Bookstore Owner
• 🤨 [Q] [S] 1053. Previous Permutation With One Swap
• 🤨 [Q] [S] 1054. Distant Barcodes
• 🤨 [Q] [S] 1055. Shortest Way to Form String
• 😊 [Q] [S] 1056. Confusing Number
• 🤨 [Q] [S] 1057. Campus Bikes
• 🤨 [Q] [S] 1058. Minimize Rounding Error to Meet Target
• 🤨 [Q] [S] 1059. All Paths from Source Lead to Destination
• 🤨 [Q] [S] 1060. Missing Element in Sorted Array
• 🤨 [Q] [S] 1061. Lexicographically Smallest Equivalent String
• 🤨 [Q] [S] 1062. Longest Repeating Substring
• 😫 [Q] [S] 1063. Number of Valid Subarrays
• 😊 [Q] [S] 1064. Fixed Point
• 😊 [Q] [S] 1065. Index Pairs of a String
• 🤨 [Q] [S] 1066. Campus Bikes II
• 😫 [Q] [S] 1067. Digit Count in Range
• 😊 [Q] [S] 1071. Greatest Common Divisor of Strings
• 🤨 [Q] [S] 1072. Flip Columns For Maximum Number of Equal Rows
• 🤨 [Q] [S] 1073. Adding Two Negabinary Numbers
• 😫 [Q] [S] 1074. Number of Submatrices That Sum to Target
• 😊 [Q] [S] 1078. Occurrences After Bigram
• 🤨 [Q] [S] 1079. Letter Tile Possibilities
• 🤨 [Q] [S] 1080. Insufficient Nodes in Root to Leaf Paths
• 🤨 [Q] [S] 1081. Smallest Subsequence of Distinct Characters
• 😊 [Q] [S] 1085. Sum of Digits in the Minimum Number
• 😊 [Q] [S] 1086. High Five
• 🤨 [Q] [S] 1087. Brace Expansion
• 😫 [Q] [S] 1088. Confusing Number II
• 😊 [Q] [S] 1089. Duplicate Zeros
• 🤨 [Q] [S] 1091. Shortest Path in Binary Matrix
• 😫 [Q] [S] 1092. Shortest Common Supersequence
• 🤨 [Q] [S] 1093. Statistics from a Large Sample
• 😫 [Q] [S] 1095. Find in Mountain Array
• 😫 [Q] [S] 1096. Brace Expansion II
• 😊 [Q] [S] 1099. Two Sum Less Than K
• 🤨 [Q] [S] 1100. Find K-Length Substrings With No Repeated Characters
• 🤨 [Q] [S] 1101. The Earliest Moment When Everyone Become Friends
• 🤨 [Q] [S] 1102. Path With Maximum Minimum Value
• 🤨 [Q] [S] 1104. Path In Zigzag Labelled Binary Tree
• 🤨 [Q] [S] 1105. Filling Bookcase Shelves
• 😫 [Q] [S] 1106. Parsing A Boolean Expression
• 🤨 [Q] [S] 1109. Corporate Flight Bookings
• 🤨 [Q] [S] 1110. Delete Nodes And Return Forest
• 🤨 [Q] [S] 1111. Maximum Nesting Depth of Two Valid Parentheses Strings
• 😊 [Q] [S] 1118. Number of Days in a Month
• 😊 [Q] [S] 1119. Remove Vowels from a String
• 🤨 [Q] [S] 1120. Maximum Average Subtree
• 😫 [Q] [S] 1121. Divide Array Into Increasing Sequences
• 🤨 [Q] [S] 1123. Lowest Common Ancestor of Deepest Leaves
• 🤨 [Q] [S] 1124. Longest Well-Performing Interval
• 😫 [Q] [S] 1125. Smallest Sufficient Team
• 😊 [Q] [S] 1128. Number of Equivalent Domino Pairs
• 🤨 [Q] [S] 1129. Shortest Path with Alternating Colors
• 🤨 [Q] [S] 1130. Minimum Cost Tree From Leaf Values
• 🤨 [Q] [S] 1131. Maximum of Absolute Value Expression
• 😊 [Q] [S] 1133. Largest Unique Number
• 😊 [Q] [S] 1134. Armstrong Number
• 🤨 [Q] [S] 1135. Connecting Cities With Minimum Cost
• 🤨 [Q] [S] 1136. Parallel Courses
• 😊 [Q] [S] 1137. N-th Tribonacci Number
• 🤨 [Q] [S] 1138. Alphabet Board Path
• 🤨 [Q] [S] 1139. Largest 1-Bordered Square
• 🤨 [Q] [S] 1140. Stone Game II
• 🤨 [Q] [S] 1143. Longest Common Subsequence
• 🤨 [Q] [S] 1144. Decrease Elements To Make Array Zigzag
• 🤨 [Q] [S] 1145. Binary Tree Coloring Game
• 🤨 [Q] [S] 1146. Snapshot Array
• 😫 [Q] [S] 1147. Longest Chunked Palindrome Decomposition
• 😊 [Q] [S] 1150. Check If a Number Is Majority Element in a Sorted Array
• 🤨 [Q] [S] 1151. Minimum Swaps to Group All 1's Together
• 🤨 [Q] [S] 1152. Analyze User Website Visit Pattern
• 😫 [Q] [S] 1153. String Transforms Into Another String
• 😊 [Q] [S] 1154. Day of the Year
• 🤨 [Q] [S] 1155. Number of Dice Rolls With Target Sum
• 🤨 [Q] [S] 1156. Swap For Longest Repeated Character Substring
• 😫 [Q] [S] 1157. Online Majority Element In Subarray
• 😊 [Q] [S] 1160. Find Words That Can Be Formed by Characters
• 🤨 [Q] [S] 1161. Maximum Level Sum of a Binary Tree
• 🤨 [Q] [S] 1162. As Far from Land as Possible
• 😫 [Q] [S] 1163. Last Substring in Lexicographical Order
• 😊 [Q] [S] 1165. Single-Row Keyboard
• 🤨 [Q] [S] 1166. Design File System
• 🤨 [Q] [S] 1167. Minimum Cost to Connect Sticks
• 😫 [Q] [S] 1168. Optimize Water Distribution in a Village
• 🤨 [Q] [S] 1169. Invalid Transactions
• 🤨 [Q] [S] 1170. Compare Strings by Frequency of the Smallest Character
• 🤨 [Q] [S] 1171. Remove Zero Sum Consecutive Nodes from Linked List
• 😫 [Q] [S] 1172. Dinner Plate Stacks
• 😊 [Q] [S] 1175. Prime Arrangements
• 😊 [Q] [S] 1176. Diet Plan Performance
• 🤨 [Q] [S] 1177. Can Make Palindrome from Substring
• 😫 [Q] [S] 1178. Number of Valid Words for Each Puzzle
• 😊 [Q] [S] 1180. Count Substrings with Only One Distinct Letter
• 🤨 [Q] [S] 1181. Before and After Puzzle
• 🤨 [Q] [S] 1182. Shortest Distance to Target Color
• 😫 [Q] [S] 1183. Maximum Number of Ones
• 😊 [Q] [S] 1184. Distance Between Bus Stops
• 😊 [Q] [S] 1185. Day of the Week
• 🤨 [Q] [S] 1186. Maximum Subarray Sum with One Deletion
• 😫 [Q] [S] 1187. Make Array Strictly Increasing
• 😊 [Q] [S] 1189. Maximum Number of Balloons
• 🤨 [Q] [S] 1190. Reverse Substrings Between Each Pair of Parentheses
• 🤨 [Q] [S] 1191. K-Concatenation Maximum Sum
• 😫 [Q] [S] 1192. Critical Connections in a Network
• 😊 [Q] [S] 1196. How Many Apples Can You Put into the Basket
• 🤨 [Q] [S] 1197. Minimum Knight Moves
• 🤨 [Q] [S] 1198. Find Smallest Common Element in All Rows
• 😫 [Q] [S] 1199. Minimum Time to Build Blocks
• 🤨 [Q] [S] 1201. Ugly Number III
• 🤨 [Q] [S] 1202. Smallest String With Swaps
• 😫 [Q] [S] 1206. Design Skiplist
• 😊 [Q] [S] 1207. Unique Number of Occurrences
• 🤨 [Q] [S] 1208. Get Equal Substrings Within Budget
• 🤨 [Q] [S] 1209. Remove All Adjacent Duplicates in String II
• 😫 [Q] [S] 1210. Minimum Moves to Reach Target with Rotations
• 😊 [Q] [S] 1213. Intersection of Three Sorted Arrays
• 🤨 [Q] [S] 1214. Two Sum BSTs
• 🤨 [Q] [S] 1215. Stepping Numbers
• 😫 [Q] [S] 1216. Valid Palindrome III
• 🤨 [Q] [S] 1218. Longest Arithmetic Subsequence of Given Difference
• 🤨 [Q] [S] 1219. Path with Maximum Gold
• 😫 [Q] [S] 1220. Count Vowels Permutation
• 🤨 [Q] [S] 1222. Queens That Can Attack the King
• 😫 [Q] [S] 1223. Dice Roll Simulation
• 😫 [Q] [S] 1224. Maximum Equal Frequency
• 🤨 [Q] [S] 1227. Airplane Seat Assignment Probability
• 😊 [Q] [S] 1228. Missing Number In Arithmetic Progression
• 🤨 [Q] [S] 1229. Meeting Scheduler
• 🤨 [Q] [S] 1230. Toss Strange Coins
• 😫 [Q] [S] 1231. Divide Chocolate
• 🤨 [Q] [S] 1234. Replace the Substring for Balanced String
• 🤨 [Q] [S] 1236. Web Crawler
• 🤨 [Q] [S] 1237. Find Positive Integer Solution for a Given Equation
• 🤨 [Q] [S] 1238. Circular Permutation in Binary Representation
• 🤨 [Q] [S] 1239. Maximum Length of a Concatenated String with Unique Characters
• 😫 [Q] [S] 1240. Tiling a Rectangle with the Fewest Squares
• 😊 [Q] [S] 1243. Array Transformation
• 🤨 [Q] [S] 1244. Design A Leaderboard
• 🤨 [Q] [S] 1245. Tree Diameter
• 😫 [Q] [S] 1246. Palindrome Removal
• 🤨 [Q] [S] 1247. Minimum Swaps to Make Strings Equal
• 🤨 [Q] [S] 1248. Count Number of Nice Subarrays
• 😊 [Q] [S] 1252. Cells with Odd Values in a Matrix
• 🤨 [Q] [S] 1253. Reconstruct a 2-Row Binary Matrix
• 🤨 [Q] [S] 1254. Number of Closed Islands
• 😫 [Q] [S] 1255. Maximum Score Words Formed by Letters
• 🤨 [Q] [S] 1256. Encode Number
• 🤨 [Q] [S] 1257. Smallest Common Region
• 🤨 [Q] [S] 1258. Synonymous Sentences
• 😫 [Q] [S] 1259. Handshakes That Don't Cross
• 😊 [Q] [S] 1260. Shift 2D Grid
• 🤨 [Q] [S] 1261. Find Elements in a Contaminated Binary Tree
• 🤨 [Q] [S] 1262. Greatest Sum Divisible by Three
• 🤨 [Q] [S] 1265. Print Immutable Linked List in Reverse
• 🤨 [Q] [S] 1267. Count Servers that Communicate
• 🤨 [Q] [S] 1268. Search Suggestions System
• 😫 [Q] [S] 1269. Number of Ways to Stay in the Same Place After Some Steps
• 😊 [Q] [S] 1271. Hexspeak
• 🤨 [Q] [S] 1272. Remove Interval
• 🤨 [Q] [S] 1273. Delete Tree Nodes
• 😫 [Q] [S] 1274. Number of Ships in a Rectangle
• 😊 [Q] [S] 1275. Find Winner on a Tic Tac Toe Game
• 🤨 [Q] [S] 1276. Number of Burgers with No Waste of Ingredients
• 😫 [Q] [S] 1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix
• 😊 [Q] [S] 1287. Element Appearing More Than 25% In Sorted Array
• 🤨 [Q] [S] 1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold
• 😫 [Q] [S] 1293. Shortest Path in a Grid with Obstacles Elimination
• 🤨 [Q] [S] 1296. Divide Array in Sets of K Consecutive Numbers
• 🤨 [Q] [S] 1297. Maximum Number of Occurrences of a Substring
• 😫 [Q] [S] 1298. Maximum Candies You Can Get from Boxes
• 🤨 [Q] [S] 1300. Sum of Mutated Array Closest to Target
• 😫 [Q] [S] 1301. Number of Paths with Max Score
• 🤨 [Q] [S] 1302. Deepest Leaves Sum
• 😊 [Q] [S] 1304. Find N Unique Integers Sum up to Zero
• 😫 [Q] [S] 1307. Verbal Arithmetic Puzzle
• 🤨 [Q] [S] 1310. XOR Queries of a Subarray
• 🤨 [Q] [S] 1311. Get Watched Videos by Your Friends
• 😫 [Q] [S] 1312. Minimum Insertion Steps to Make a String Palindrome
• 🤨 [Q] [S] 1314. Matrix Block Sum
• 🤨 [Q] [S] 1315. Sum of Nodes with Even-Valued Grandparent
• 😫 [Q] [S] 1316. Distinct Echo Substrings
• 😊 [Q] [S] 1317. Convert Integer to the Sum of Two No-Zero Integers
• 🤨 [Q] [S] 1318. Minimum Flips to Make a OR b Equal to c
• 😫 [Q] [S] 1320. Minimum Distance to Type a Word Using Two Fingers
• 😊 [Q] [S] 1323. Maximum 69 Number
• 🤨 [Q] [S] 1324. Print Words Vertically
• 🤨 [Q] [S] 1325. Delete Leaves With a Given Value
• 😫 [Q] [S] 1326. Minimum Number of Taps to Open to Water a Garden
• 🤨 [Q] [S] 1328. Break a Palindrome
• 🤨 [Q] [S] 1329. Sort the Matrix Diagonally
• 😊 [Q] [S] 1331. Rank Transform of an Array
• 😊 [Q] [S] 1332. Remove Palindromic Subsequences
• 🤨 [Q] [S] 1333. Filter Restaurants by Vegan-Friendly, Price and Distance
• 😫 [Q] [S] 1335. Minimum Difficulty of a Job Schedule
• 🤨 [Q] [S] 1338. Reduce Array Size to The Half
• 🤨 [Q] [S] 1339. Maximum Product of Splitted Binary Tree
• 😫 [Q] [S] 1340. Jump Game V
• 🤨 [Q] [S] 1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
• 😊 [Q] [S] 1346. Check If N and Its Double Exist
• 🤨 [Q] [S] 1347. Minimum Number of Steps to Make Two Strings Anagram
• 🤨 [Q] [S] 1348. Tweet Counts Per Frequency
• 😫 [Q] [S] 1349. Maximum Students Taking Exam
• 🤨 [Q] [S] 1352. Product of the Last K Numbers
• 🤨 [Q] [S] 1353. Maximum Number of Events That Can Be Attended
• 😫 [Q] [S] 1354. Construct Target Array With Multiple Sums
• 😊 [Q] [S] 1356. Sort Integers by The Number of 1 Bits
• 🤨 [Q] [S] 1357. Apply Discount Every n Orders
• 🤨 [Q] [S] 1358. Number of Substrings Containing All Three Characters
• 😫 [Q] [S] 1359. Count All Valid Pickup and Delivery Options
• 😊 [Q] [S] 1360. Number of Days Between Two Dates
• 🤨 [Q] [S] 1361. Validate Binary Tree Nodes
• 🤨 [Q] [S] 1362. Closest Divisors
• 🤨 [Q] [S] 1366. Rank Teams by Votes
• 😊 [Q] [S] 1370. Increasing Decreasing String
• 🤨 [Q] [S] 1371. Find the Longest Substring Containing Vowels in Even Counts
• 🤨 [Q] [S] 1372. Longest ZigZag Path in a Binary Tree
• 😫 [Q] [S] 1373. Maximum Sum BST in Binary Tree
• 😊 [Q] [S] 1374. Generate a String With Characters That Have Odd Counts
• 🤨 [Q] [S] 1375. Bulb Switcher III
• 🤨 [Q] [S] 1376. Time Needed to Inform All Employees
• 😫 [Q] [S] 1377. Frog Position After T Seconds
• 🤨 [Q] [S] 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
• 😊 [Q] [S] 1380. Lucky Numbers in a Matrix
• 🤨 [Q] [S] 1381. Design a Stack With Increment Operation
• 🤨 [Q] [S] 1382. Balance a Binary Search Tree
• 😫 [Q] [S] 1383. Maximum Performance of a Team
• 😊 [Q] [S] 1385. Find the Distance Value Between Two Arrays
• 🤨 [Q] [S] 1387. Sort Integers by The Power Value
• 😫 [Q] [S] 1388. Pizza With 3n Slices
• 😊 [Q] [S] 1389. Create Target Array in the Given Order
• 🤨 [Q] [S] 1390. Four Divisors
• 😫 [Q] [S] 1392. Longest Happy Prefix
• 😊 [Q] [S] 1394. Find Lucky Integer in an Array
• 🤨 [Q] [S] 1396. Design Underground System
• 😫 [Q] [S] 1397. Find All Good Strings
• 😊 [Q] [S] 1399. Count Largest Group
• 🤨 [Q] [S] 1400. Construct K Palindrome Strings
• 🤨 [Q] [S] 1401. Circle and Rectangle Overlapping
• 😫 [Q] [S] 1402. Reducing Dishes
• 😊 [Q] [S] 1403. Minimum Subsequence in Non-Increasing Order
• 😫 [Q] [S] 1406. Stone Game III
• 😊 [Q] [S] 1408. String Matching in an Array
• 🤨 [Q] [S] 1409. Queries on a Permutation With Key
• 🤨 [Q] [S] 1410. HTML Entity Parser
• 😫 [Q] [S] 1411. Number of Ways to Paint N × 3 Grid
• 😊 [Q] [S] 1413. Minimum Value to Get Positive Step by Step Sum
• 🤨 [Q] [S] 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K
• 🤨 [Q] [S] 1415. The k-th Lexicographical String of All Happy Strings of Length n
• 😫 [Q] [S] 1416. Restore The Array
• 😊 [Q] [S] 1417. Reformat The String
• 🤨 [Q] [S] 1418. Display Table of Food Orders in a Restaurant
• 🤨 [Q] [S] 1419. Minimum Number of Frogs Croaking
• 😫 [Q] [S] 1420. Build Array Where You Can Find The Maximum Exactly K Comparisons
• 😊 [Q] [S] 1422. Maximum Score After Splitting a String
• 🤨 [Q] [S] 1423. Maximum Points You Can Obtain from Cards
• 🤨 [Q] [S] 1424. Diagonal Traverse II
• 😫 [Q] [S] 1425. Constrained Subsequence Sum
• 😊 [Q] [S] 1426. Counting Elements
• 😊 [Q] [S] 1427. Perform String Shifts
• 🤨 [Q] [S] 1428. Leftmost Column with at Least a One
• 🤨 [Q] [S] 1429. First Unique Number
• 🤨 [Q] [S] 1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree
• 🤨 [Q] [S] 1433. Check If a String Can Break Another String
• 😫 [Q] [S] 1434. Number of Ways to Wear Different Hats to Each Other
• 😊 [Q] [S] 1437. Check If All 1's Are at Least Length K Places Away
• 🤨 [Q] [S] 1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit
• 😫 [Q] [S] 1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows
• 😊 [Q] [S] 1441. Build an Array With Stack Operations
• 🤨 [Q] [S] 1442. Count Triplets That Can Form Two Arrays of Equal XOR
• 🤨 [Q] [S] 1443. Minimum Time to Collect All Apples in a Tree
• 😫 [Q] [S] 1444. Number of Ways of Cutting a Pizza
• 🤨 [Q] [S] 1447. Simplified Fractions
• 🤨 [Q] [S] 1448. Count Good Nodes in Binary Tree
• 😫 [Q] [S] 1449. Form Largest Integer With Digits That Add up to Target
• 🤨 [Q] [S] 1451. Rearrange Words in a Sentence
• 🤨 [Q] [S] 1452. People Whose List of Favorite Companies Is Not a Subset of Another List
• 😫 [Q] [S] 1453. Maximum Number of Darts Inside of a Circular Dartboard
• 😊 [Q] [S] 1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
• 🤨 [Q] [S] 1456. Maximum Number of Vowels in a Substring of Given Length
• 😫 [Q] [S] 1458. Max Dot Product of Two Subsequences
• 😊 [Q] [S] 1460. Make Two Arrays Equal by Reversing Sub-arrays
• 🤨 [Q] [S] 1461. Check If a String Contains All Binary Codes of Size K
• 🤨 [Q] [S] 1462. Course Schedule IV
• 😫 [Q] [S] 1463. Cherry Pickup II
• 🤨 [Q] [S] 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
• 🤨 [Q] [S] 1466. Reorder Routes to Make All Paths Lead to the City Zero
• 😫 [Q] [S] 1467. Probability of a Two Boxes Having The Same Number of Distinct Balls
• 😊 [Q] [S] 1469. Find All The Lonely Nodes
• 😊 [Q] [S] 1470. Shuffle the Array
• 🤨 [Q] [S] 1471. The k Strongest Values in an Array
• 🤨 [Q] [S] 1472. Design Browser History
• 😫 [Q] [S] 1473. Paint House III
• 😊 [Q] [S] 1474. Delete N Nodes After M Nodes of a Linked List
• 🤨 [Q] [S] 1476. Subrectangle Queries
• 🤨 [Q] [S] 1477. Find Two Non-overlapping Sub-arrays Each With Target Sum
• 😫 [Q] [S] 1478. Allocate Mailboxes
• 😊 [Q] [S] 1480. Running Sum of 1d Array
• 🤨 [Q] [S] 1481. Least Number of Unique Integers after K Removals
• 🤨 [Q] [S] 1482. Minimum Number of Days to Make m Bouquets
• 😫 [Q] [S] 1483. Kth Ancestor of a Tree Node
• 🤨 [Q] [S] 1485. Clone Binary Tree With Random Pointer
• 😊 [Q] [S] 1486. XOR Operation in an Array
• 🤨 [Q] [S] 1487. Making File Names Unique
• 🤨 [Q] [S] 1488. Avoid Flood in The City
• 😫 [Q] [S] 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree
• 🤨 [Q] [S] 1490. Clone N-ary Tree
• 😊 [Q] [S] 1491. Average Salary Excluding the Minimum and Maximum Salary
• 🤨 [Q] [S] 1492. The kth Factor of n
• 🤨 [Q] [S] 1493. Longest Subarray of 1's After Deleting One Element
• 🤨 [Q] [S] 1497. Check If Array Pairs Are Divisible by k
• 🤨 [Q] [S] 1498. Number of Subsequences That Satisfy the Given Sum Condition
• 😫 [Q] [S] 1499. Max Value of Equation
• 🤨 [Q] [S] 1500. Design a File Sharing System
• 😊 [Q] [S] 1502. Can Make Arithmetic Progression From Sequence
• 🤨 [Q] [S] 1503. Last Moment Before All Ants Fall Out of a Plank
• 🤨 [Q] [S] 1504. Count Submatrices With All Ones
• 😫 [Q] [S] 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits
• 🤨 [Q] [S] 1506. Find Root of N-Ary Tree
• 😊 [Q] [S] 1507. Reformat Date
• 🤨 [Q] [S] 1508. Range Sum of Sorted Subarray Sums
• 🤨 [Q] [S] 1509. Minimum Difference Between Largest and Smallest Value in Three Moves
• 😊 [Q] [S] 1512. Number of Good Pairs
• 🤨 [Q] [S] 1513. Number of Substrings With Only 1s
• 🤨 [Q] [S] 1514. Path with Maximum Probability
• 😫 [Q] [S] 1515. Best Position for a Service Centre
• 😫 [Q] [S] 1516. Move Sub-Tree of N-Ary Tree
• 😊 [Q] [S] 1518. Water Bottles
• 🤨 [Q] [S] 1519. Number of Nodes in the Sub-Tree With the Same Label
• 😫 [Q] [S] 1520. Maximum Number of Non-Overlapping Substrings
• 😫 [Q] [S] 1521. Find a Value of a Mysterious Function Closest to Target
• 🤨 [Q] [S] 1522. Diameter of N-Ary Tree
• 😊 [Q] [S] 1523. Count Odd Numbers in an Interval Range
• 🤨 [Q] [S] 1524. Number of Sub-arrays With Odd Sum
• 🤨 [Q] [S] 1525. Number of Good Ways to Split a String
• 😫 [Q] [S] 1526. Minimum Number of Increments on Subarrays to Form a Target Array
• 😊 [Q] [S] 1528. Shuffle String
• 🤨 [Q] [S] 1529. Bulb Switcher IV
• 🤨 [Q] [S] 1530. Number of Good Leaf Nodes Pairs
• 😫 [Q] [S] 1531. String Compression II
• 🤨 [Q] [S] 1533. Find the Index of the Large Integer
• 😊 [Q] [S] 1534. Count Good Triplets
• 🤨 [Q] [S] 1535. Find the Winner of an Array Game
• 🤨 [Q] [S] 1536. Minimum Swaps to Arrange a Binary Grid
• 😫 [Q] [S] 1537. Get the Maximum Score
• 🤨 [Q] [S] 1538. Guess the Majority in a Hidden Array
• 😊 [Q] [S] 1539. Kth Missing Positive Number
• 🤨 [Q] [S] 1540. Can Convert String in K Moves
• 🤨 [Q] [S] 1541. Minimum Insertions to Balance a Parentheses String
• 😫 [Q] [S] 1542. Find Longest Awesome Substring
• 😊 [Q] [S] 1544. Make The String Great
• 🤨 [Q] [S] 1545. Find Kth Bit in Nth Binary String
• 🤨 [Q] [S] 1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target
• 😫 [Q] [S] 1547. Minimum Cost to Cut a Stick
• 😫 [Q] [S] 1548. The Most Similar Path in a Graph
• 😊 [Q] [S] 1550. Three Consecutive Odds
• 🤨 [Q] [S] 1551. Minimum Operations to Make Array Equal
• 🤨 [Q] [S] 1552. Magnetic Force Between Two Balls
• 😫 [Q] [S] 1553. Minimum Number of Days to Eat N Oranges
• 🤨 [Q] [S] 1554. Strings Differ by One Character
• 😊 [Q] [S] 1556. Thousand Separator
• 🤨 [Q] [S] 1557. Minimum Number of Vertices to Reach All Nodes
• 🤨 [Q] [S] 1558. Minimum Numbers of Function Calls to Make Target Array
• 😫 [Q] [S] 1559. Detect Cycles in 2D Grid
• 😊 [Q] [S] 1560. Most Visited Sector in a Circular Track
• 🤨 [Q] [S] 1561. Maximum Number of Coins You Can Get
• 🤨 [Q] [S] 1562. Find Latest Group of Size M
• 😫 [Q] [S] 1563. Stone Game V
• 🤨 [Q] [S] 1564. Put Boxes Into the Warehouse I
• 😊 [Q] [S] 1566. Detect Pattern of Length M Repeated K or More Times
• 🤨 [Q] [S] 1567. Maximum Length of Subarray With Positive Product
• 😫 [Q] [S] 1568. Minimum Number of Days to Disconnect Island
• 😫 [Q] [S] 1569. Number of Ways to Reorder Array to Get Same BST
• 🤨 [Q] [S] 1570. Dot Product of Two Sparse Vectors
• 😊 [Q] [S] 1572. Matrix Diagonal Sum
• 🤨 [Q] [S] 1573. Number of Ways to Split a String
• 🤨 [Q] [S] 1574. Shortest Subarray to be Removed to Make Array Sorted
• 😫 [Q] [S] 1575. Count All Possible Routes
• 😊 [Q] [S] 1576. Replace All ?'s to Avoid Consecutive Repeating Characters
• 🤨 [Q] [S] 1577. Number of Ways Where Square of Number Is Equal to Product of Two Numbers
• 🤨 [Q] [S] 1578. Minimum Deletion Cost to Avoid Repeating Letters
• 😫 [Q] [S] 1579. Remove Max Number of Edges to Keep Graph Fully Traversable
• 🤨 [Q] [S] 1580. Put Boxes Into the Warehouse II
• 😊 [Q] [S] 1582. Special Positions in a Binary Matrix
• 🤨 [Q] [S] 1583. Count Unhappy Friends
• 🤨 [Q] [S] 1584. Min Cost to Connect All Points
• 😫 [Q] [S] 1585. Check If String Is Transformable With Substring Sort Operations
• 🤨 [Q] [S] 1586. Binary Search Tree Iterator II
• 😊 [Q] [S] 1588. Sum of All Odd Length Subarrays
• 🤨 [Q] [S] 1589. Maximum Sum Obtained of Any Permutation
• 🤨 [Q] [S] 1590. Make Sum Divisible by P
• 😫 [Q] [S] 1591. Strange Printer II
• 😊 [Q] [S] 1592. Rearrange Spaces Between Words
• 🤨 [Q] [S] 1593. Split a String Into the Max Number of Unique Substrings
• 🤨 [Q] [S] 1594. Maximum Non Negative Product in a Matrix
• 😫 [Q] [S] 1595. Minimum Cost to Connect Two Groups of Points
• 😫 [Q] [S] 1597. Build Binary Expression Tree From Infix Expression
• 😊 [Q] [S] 1598. Crawler Log Folder
• 🤨 [Q] [S] 1599. Maximum Profit of Operating a Centennial Wheel
• 🤨 [Q] [S] 1600. Throne Inheritance
• 😫 [Q] [S] 1601. Maximum Number of Achievable Transfer Requests
• 🤨 [Q] [S] 1602. Find Nearest Right Node in Binary Tree
• 😊 [Q] [S] 1603. Design Parking System
• 🤨 [Q] [S] 1604. Alert Using Same Key-Card Three or More Times in a One Hour Period
• 🤨 [Q] [S] 1605. Find Valid Matrix Given Row and Column Sums
• 😫 [Q] [S] 1606. Find Servers That Handled Most Number of Requests
• 😊 [Q] [S] 1608. Special Array With X Elements Greater Than or Equal X
• 🤨 [Q] [S] 1609. Even Odd Tree
• 😫 [Q] [S] 1610. Maximum Number of Visible Points
• 😫 [Q] [S] 1611. Minimum One Bit Operations to Make Integers Zero
• 🤨 [Q] [S] 1612. Check If Two Expression Trees are Equivalent
• 😊 [Q] [S] 1614. Maximum Nesting Depth of the Parentheses
• 🤨 [Q] [S] 1615. Maximal Network Rank
• 🤨 [Q] [S] 1616. Split Two Strings to Make Palindrome
• 😫 [Q] [S] 1617. Count Subtrees With Max Distance Between Cities
• 🤨 [Q] [S] 1618. Maximum Font to Fit a Sentence in a Screen
• 😊 [Q] [S] 1619. Mean of Array After Removing Some Elements
• 🤨 [Q] [S] 1620. Coordinate With Maximum Network Quality
• 🤨 [Q] [S] 1621. Number of Sets of K Non-Overlapping Line Segments
• 😫 [Q] [S] 1622. Fancy Sequence
• 😊 [Q] [S] 1624. Largest Substring Between Two Equal Characters
• 🤨 [Q] [S] 1625. Lexicographically Smallest String After Applying Operations
• 🤨 [Q] [S] 1626. Best Team With No Conflicts
• 😫 [Q] [S] 1627. Graph Connectivity With Threshold
• 🤨 [Q] [S] 1628. Design an Expression Tree With Evaluate Function
• 😊 [Q] [S] 1629. Slowest Key
• 🤨 [Q] [S] 1630. Arithmetic Subarrays
• 🤨 [Q] [S] 1631. Path With Minimum Effort
• 😫 [Q] [S] 1632. Rank Transform of a Matrix
• 🤨 [Q] [S] 1634. Add Two Polynomials Represented as Linked Lists
• 😊 [Q] [S] 1636. Sort Array by Increasing Frequency
• 🤨 [Q] [S] 1637. Widest Vertical Area Between Two Points Containing No Points
• 🤨 [Q] [S] 1638. Count Substrings That Differ by One Character
• 😫 [Q] [S] 1639. Number of Ways to Form a Target String Given a Dictionary
• 😊 [Q] [S] 1640. Check Array Formation Through Concatenation
• 🤨 [Q] [S] 1641. Count Sorted Vowel Strings
• 🤨 [Q] [S] 1642. Furthest Building You Can Reach
• 😫 [Q] [S] 1643. Kth Smallest Instructions
• 🤨 [Q] [S] 1644. Lowest Common Ancestor of a Binary Tree II
• 😊 [Q] [S] 1646. Get Maximum in Generated Array
• 🤨 [Q] [S] 1647. Minimum Deletions to Make Character Frequencies Unique
• 🤨 [Q] [S] 1648. Sell Diminishing-Valued Colored Balls
• 😫 [Q] [S] 1649. Create Sorted Array through Instructions
• 🤨 [Q] [S] 1650. Lowest Common Ancestor of a Binary Tree III
• 😊 [Q] [S] 1652. Defuse the Bomb
• 🤨 [Q] [S] 1653. Minimum Deletions to Make String Balanced
• 🤨 [Q] [S] 1654. Minimum Jumps to Reach Home
• 😫 [Q] [S] 1655. Distribute Repeating Integers
• 😊 [Q] [S] 1656. Design an Ordered Stream
• 🤨 [Q] [S] 1657. Determine if Two Strings Are Close
• 🤨 [Q] [S] 1658. Minimum Operations to Reduce X to Zero
• 😫 [Q] [S] 1659. Maximize Grid Happiness
• 🤨 [Q] [S] 1660. Correct a Binary Tree
• 😊 [Q] [S] 1662. Check If Two String Arrays are Equivalent
• 🤨 [Q] [S] 1663. Smallest String With A Given Numeric Value
• 🤨 [Q] [S] 1664. Ways to Make a Fair Array
• 😫 [Q] [S] 1665. Minimum Initial Energy to Finish Tasks
• 🤨 [Q] [S] 1666. Change the Root of a Binary Tree
• 😊 [Q] [S] 1668. Maximum Repeating Substring
• 🤨 [Q] [S] 1669. Merge In Between Linked Lists
• 🤨 [Q] [S] 1670. Design Front Middle Back Queue
• 😫 [Q] [S] 1671. Minimum Number of Removals to Make Mountain Array
• 😊 [Q] [S] 1672. Richest Customer Wealth
• 🤨 [Q] [S] 1673. Find the Most Competitive Subsequence
• 🤨 [Q] [S] 1674. Minimum Moves to Make Array Complementary
• 😫 [Q] [S] 1675. Minimize Deviation in Array
• 🤨 [Q] [S] 1676. Lowest Common Ancestor of a Binary Tree IV
• 😊 [Q] [S] 1678. Goal Parser Interpretation
• 🤨 [Q] [S] 1679. Max Number of K-Sum Pairs
• 🤨 [Q] [S] 1680. Concatenation of Consecutive Binary Numbers
• 😫 [Q] [S] 1681. Minimum Incompatibility
• 🤨 [Q] [S] 1682. Longest Palindromic Subsequence II
• 😊 [Q] [S] 1684. Count the Number of Consistent Strings
• 🤨 [Q] [S] 1685. Sum of Absolute Differences in a Sorted Array
• 🤨 [Q] [S] 1686. Stone Game VI
• 😫 [Q] [S] 1687. Delivering Boxes from Storage to Ports
• 😊 [Q] [S] 1688. Count of Matches in Tournament
• 🤨 [Q] [S] 1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
• 🤨 [Q] [S] 1690. Stone Game VII
• 😫 [Q] [S] 1691. Maximum Height by Stacking Cuboids
• 😫 [Q] [S] 1692. Count Ways to Distribute Candies
• 😊 [Q] [S] 1694. Reformat Phone Number
• 🤨 [Q] [S] 1695. Maximum Erasure Value
• 🤨 [Q] [S] 1696. Jump Game VI
• 😫 [Q] [S] 1697. Checking Existence of Edge Length Limited Paths
• 🤨 [Q] [S] 1698. Number of Distinct Substrings in a String
• 😊 [Q] [S] 1700. Number of Students Unable to Eat Lunch
• 🤨 [Q] [S] 1701. Average Waiting Time
• 🤨 [Q] [S] 1702. Maximum Binary String After Change
• 😫 [Q] [S] 1703. Minimum Adjacent Swaps for K Consecutive Ones
• 😊 [Q] [S] 1704. Determine if String Halves Are Alike
• 🤨 [Q] [S] 1705. Maximum Number of Eaten Apples
• 🤨 [Q] [S] 1706. Where Will the Ball Fall
• 😫 [Q] [S] 1707. Maximum XOR With an Element From Array
• 😊 [Q] [S] 1708. Largest Subarray Length K
• 😊 [Q] [S] 1710. Maximum Units on a Truck
• 🤨 [Q] [S] 1711. Count Good Meals
• 🤨 [Q] [S] 1712. Ways to Split Array Into Three Subarrays
• 😫 [Q] [S] 1713. Minimum Operations to Make a Subsequence
• 😫 [Q] [S] 1714. Sum Of Special Evenly-Spaced Elements In Array
• 😊 [Q] [S] 1716. Calculate Money in Leetcode Bank
• 🤨 [Q] [S] 1717. Maximum Score From Removing Substrings
• 🤨 [Q] [S] 1718. Construct the Lexicographically Largest Valid Sequence
• 😫 [Q] [S] 1719. Number Of Ways To Reconstruct A Tree
• 😊 [Q] [S] 1720. Decode XORed Array
• 🤨 [Q] [S] 1721. Swapping Nodes in a Linked List
• 🤨 [Q] [S] 1722. Minimize Hamming Distance After Swap Operations
• 😫 [Q] [S] 1723. Find Minimum Time to Finish All Jobs
• 😫 [Q] [S] 1724. Checking Existence of Edge Length Limited Paths II
• 😊 [Q] [S] 1725. Number Of Rectangles That Can Form The Largest Square
• 🤨 [Q] [S] 1726. Tuple with Same Product
• 🤨 [Q] [S] 1727. Largest Submatrix With Rearrangements
• 😫 [Q] [S] 1728. Cat and Mouse II
• 🤨 [Q] [S] 1730. Shortest Path to Get Food
• 😊 [Q] [S] 1732. Find the Highest Altitude
• 🤨 [Q] [S] 1733. Minimum Number of People to Teach
• 🤨 [Q] [S] 1734. Decode XORed Permutation
• 😫 [Q] [S] 1735. Count Ways to Make Array With Product
• 😊 [Q] [S] 1736. Latest Time by Replacing Hidden Digits
• 🤨 [Q] [S] 1737. Change Minimum Characters to Satisfy One of Three Conditions
• 🤨 [Q] [S] 1738. Find Kth Largest XOR Coordinate Value
• 😫 [Q] [S] 1739. Building Boxes
• 🤨 [Q] [S] 1740. Find Distance in a Binary Tree
• 😊 [Q] [S] 1742. Maximum Number of Balls in a Box
• 🤨 [Q] [S] 1743. Restore the Array From Adjacent Pairs
• 🤨 [Q] [S] 1744. Can You Eat Your Favorite Candy on Your Favorite Day?
• 😫 [Q] [S] 1745. Palindrome Partitioning IV
• 🤨 [Q] [S] 1746. Maximum Subarray Sum After One Operation
• 😊 [Q] [S] 1748. Sum of Unique Elements
• 🤨 [Q] [S] 1749. Maximum Absolute Sum of Any Subarray
• 🤨 [Q] [S] 1750. Minimum Length of String After Deleting Similar Ends
• 😫 [Q] [S] 1751. Maximum Number of Events That Can Be Attended II
• 😊 [Q] [S] 1752. Check if Array Is Sorted and Rotated
• 🤨 [Q] [S] 1753. Maximum Score From Removing Stones
• 🤨 [Q] [S] 1754. Largest Merge Of Two Strings
• 😫 [Q] [S] 1755. Closest Subsequence Sum
• 🤨 [Q] [S] 1756. Design Most Recently Used Queue
• 😊 [Q] [S] 1758. Minimum Changes To Make Alternating Binary String
• 🤨 [Q] [S] 1759. Count Number of Homogenous Substrings
• 🤨 [Q] [S] 1760. Minimum Limit of Balls in a Bag
• 😫 [Q] [S] 1761. Minimum Degree of a Connected Trio in a Graph
• 🤨 [Q] [S] 1762. Buildings With an Ocean View
• 😊 [Q] [S] 1763. Longest Nice Substring
• 🤨 [Q] [S] 1764. Form Array by Concatenating Subarrays of Another Array
• 🤨 [Q] [S] 1765. Map of Highest Peak
• 😫 [Q] [S] 1766. Tree of Coprimes
• 😊 [Q] [S] 1768. Merge Strings Alternately
• 🤨 [Q] [S] 1769. Minimum Number of Operations to Move All Balls to Each Box
• 🤨 [Q] [S] 1770. Maximum Score from Performing Multiplication Operations
• 😫 [Q] [S] 1771. Maximize Palindrome Length From Subsequences
• 🤨 [Q] [S] 1772. Sort Features by Popularity
• 😊 [Q] [S] 1773. Count Items Matching a Rule
• 🤨 [Q] [S] 1774. Closest Dessert Cost
• 🤨 [Q] [S] 1775. Equal Sum Arrays With Minimum Number of Operations
• 😫 [Q] [S] 1776. Car Fleet II
• 🤨 [Q] [S] 1778. Shortest Path in a Hidden Grid
• 😊 [Q] [S] 1779. Find Nearest Point That Has the Same X or Y Coordinate
• 🤨 [Q] [S] 1780. Check if Number is a Sum of Powers of Three
• 🤨 [Q] [S] 1781. Sum of Beauty of All Substrings
• 😫 [Q] [S] 1782. Count Pairs Of Nodes
• 😊 [Q] [S] 1784. Check if Binary String Has at Most One Segment of Ones
• 🤨 [Q] [S] 1785. Minimum Elements to Add to Form a Given Sum
• 🤨 [Q] [S] 1786. Number of Restricted Paths From First to Last Node
• 😫 [Q] [S] 1787. Make the XOR of All Segments Equal to Zero

How am I generated?

Based on SwiftSyntax, the renderer walks through the directories and analyzes the syntax of each solution to fetch its metadata.

For example, it can collect the tag info if the following statement appears in the solution:

let tags: [Tag] = [.marked, .dp, .graph]

For more details, check here!