Until 2018-03-12 15:06:17, I have solved 5 / 714 problems while 132 are still locked.
Completion statistic:
- JavaScript: 0
- Python: 5
- C++: 0
- Java: 0
Note: 🔒 means you need to buy a book from LeetCode
ID | Title | Difficulty | JavaScript | Python | C++ | Java |
---|---|---|---|---|---|---|
001 | Two Sum | Easy | To Do | Python | To Do | To Do |
002 | Add Two Numbers | Medium | To Do | Python | To Do | To Do |
003 | Longest Substring Without Repeating Characters | Medium | To Do | Python | To Do | To Do |
004 | Median of Two Sorted Arrays | Hard | To Do | Python | To Do | To Do |
005 | Longest Palindromic Substring | Medium | To Do | Python | To Do | To Do |
006 | ZigZag Conversion | Medium | To Do | To Do | To Do | To Do |
007 | Reverse Integer | Easy | To Do | To Do | To Do | To Do |
008 | String to Integer (atoi) | Medium | To Do | To Do | To Do | To Do |
009 | Palindrome Number | Easy | To Do | To Do | To Do | To Do |
010 | Regular Expression Matching | Hard | To Do | To Do | To Do | To Do |
011 | Container With Most Water | Medium | To Do | To Do | To Do | To Do |
012 | Integer to Roman | Medium | To Do | To Do | To Do | To Do |
013 | Roman to Integer | Easy | To Do | To Do | To Do | To Do |
014 | Longest Common Prefix | Easy | To Do | To Do | To Do | To Do |
015 | 3Sum | Medium | To Do | To Do | To Do | To Do |
016 | 3Sum Closest | Medium | To Do | To Do | To Do | To Do |
017 | Letter Combinations of a Phone Number | Medium | To Do | To Do | To Do | To Do |
018 | 4Sum | Medium | To Do | To Do | To Do | To Do |
019 | Remove Nth Node From End of List | Medium | To Do | To Do | To Do | To Do |
020 | Valid Parentheses | Easy | To Do | To Do | To Do | To Do |
021 | Merge Two Sorted Lists | Easy | To Do | To Do | To Do | To Do |
022 | Generate Parentheses | Medium | To Do | To Do | To Do | To Do |
023 | Merge k Sorted Lists | Hard | To Do | To Do | To Do | To Do |
024 | Swap Nodes in Pairs | Medium | To Do | To Do | To Do | To Do |
025 | Reverse Nodes in k-Group | Hard | To Do | To Do | To Do | To Do |
026 | Remove Duplicates from Sorted Array | Easy | To Do | To Do | To Do | To Do |
027 | Remove Element | Easy | To Do | To Do | To Do | To Do |
028 | Implement strStr() | Easy | To Do | To Do | To Do | To Do |
029 | Divide Two Integers | Medium | To Do | To Do | To Do | To Do |
030 | Substring with Concatenation of All Words | Hard | To Do | To Do | To Do | To Do |
031 | Next Permutation | Medium | To Do | To Do | To Do | To Do |
032 | Longest Valid Parentheses | Hard | To Do | To Do | To Do | To Do |
033 | Search in Rotated Sorted Array | Medium | To Do | To Do | To Do | To Do |
034 | Search for a Range | Medium | To Do | To Do | To Do | To Do |
035 | Search Insert Position | Easy | To Do | To Do | To Do | To Do |
036 | Valid Sudoku | Medium | To Do | To Do | To Do | To Do |
037 | Sudoku Solver | Hard | To Do | To Do | To Do | To Do |
038 | Count and Say | Easy | To Do | To Do | To Do | To Do |
039 | Combination Sum | Medium | To Do | To Do | To Do | To Do |
040 | Combination Sum II | Medium | To Do | To Do | To Do | To Do |
041 | First Missing Positive | Hard | To Do | To Do | To Do | To Do |
042 | Trapping Rain Water | Hard | To Do | To Do | To Do | To Do |
043 | Multiply Strings | Medium | To Do | To Do | To Do | To Do |
044 | Wildcard Matching | Hard | To Do | To Do | To Do | To Do |
045 | Jump Game II | Hard | To Do | To Do | To Do | To Do |
046 | Permutations | Medium | To Do | To Do | To Do | To Do |
047 | Permutations II | Medium | To Do | To Do | To Do | To Do |
048 | Rotate Image | Medium | To Do | To Do | To Do | To Do |
049 | Group Anagrams | Medium | To Do | To Do | To Do | To Do |
050 | Pow(x, n) | Medium | To Do | To Do | To Do | To Do |
051 | N-Queens | Hard | To Do | To Do | To Do | To Do |
052 | N-Queens II | Hard | To Do | To Do | To Do | To Do |
053 | Maximum Subarray | Easy | To Do | To Do | To Do | To Do |
054 | Spiral Matrix | Medium | To Do | To Do | To Do | To Do |
055 | Jump Game | Medium | To Do | To Do | To Do | To Do |
056 | Merge Intervals | Medium | To Do | To Do | To Do | To Do |
057 | Insert Interval | Hard | To Do | To Do | To Do | To Do |
058 | Length of Last Word | Easy | To Do | To Do | To Do | To Do |
059 | Spiral Matrix II | Medium | To Do | To Do | To Do | To Do |
060 | Permutation Sequence | Medium | To Do | To Do | To Do | To Do |
061 | Rotate List | Medium | To Do | To Do | To Do | To Do |
062 | Unique Paths | Medium | To Do | To Do | To Do | To Do |
063 | Unique Paths II | Medium | To Do | To Do | To Do | To Do |
064 | Minimum Path Sum | Medium | To Do | To Do | To Do | To Do |
065 | Valid Number | Hard | To Do | To Do | To Do | To Do |
066 | Plus One | Easy | To Do | To Do | To Do | To Do |
067 | Add Binary | Easy | To Do | To Do | To Do | To Do |
068 | Text Justification | Hard | To Do | To Do | To Do | To Do |
069 | Sqrt(x) | Easy | To Do | To Do | To Do | To Do |
070 | Climbing Stairs | Easy | To Do | To Do | To Do | To Do |
071 | Simplify Path | Medium | To Do | To Do | To Do | To Do |
072 | Edit Distance | Hard | To Do | To Do | To Do | To Do |
073 | Set Matrix Zeroes | Medium | To Do | To Do | To Do | To Do |
074 | Search a 2D Matrix | Medium | To Do | To Do | To Do | To Do |
075 | Sort Colors | Medium | To Do | To Do | To Do | To Do |
076 | Minimum Window Substring | Hard | To Do | To Do | To Do | To Do |
077 | Combinations | Medium | To Do | To Do | To Do | To Do |
078 | Subsets | Medium | To Do | To Do | To Do | To Do |
079 | Word Search | Medium | To Do | To Do | To Do | To Do |
080 | Remove Duplicates from Sorted Array II | Medium | To Do | To Do | To Do | To Do |
081 | Search in Rotated Sorted Array II | Medium | To Do | To Do | To Do | To Do |
082 | Remove Duplicates from Sorted List II | Medium | To Do | To Do | To Do | To Do |
083 | Remove Duplicates from Sorted List | Easy | To Do | To Do | To Do | To Do |
084 | Largest Rectangle in Histogram | Hard | To Do | To Do | To Do | To Do |
085 | Maximal Rectangle | Hard | To Do | To Do | To Do | To Do |
086 | Partition List | Medium | To Do | To Do | To Do | To Do |
087 | Scramble String | Hard | To Do | To Do | To Do | To Do |
088 | Merge Sorted Array | Easy | To Do | To Do | To Do | To Do |
089 | Gray Code | Medium | To Do | To Do | To Do | To Do |
090 | Subsets II | Medium | To Do | To Do | To Do | To Do |
091 | Decode Ways | Medium | To Do | To Do | To Do | To Do |
092 | Reverse Linked List II | Medium | To Do | To Do | To Do | To Do |
093 | Restore IP Addresses | Medium | To Do | To Do | To Do | To Do |
094 | Binary Tree Inorder Traversal | Medium | To Do | To Do | To Do | To Do |
095 | Unique Binary Search Trees II | Medium | To Do | To Do | To Do | To Do |
096 | Unique Binary Search Trees | Medium | To Do | To Do | To Do | To Do |
097 | Interleaving String | Hard | To Do | To Do | To Do | To Do |
098 | Validate Binary Search Tree | Medium | To Do | To Do | To Do | To Do |
099 | Recover Binary Search Tree | Hard | To Do | To Do | To Do | To Do |
100 | Same Tree | Easy | To Do | To Do | To Do | To Do |
101 | Symmetric Tree | Easy | To Do | To Do | To Do | To Do |
102 | Binary Tree Level Order Traversal | Medium | To Do | To Do | To Do | To Do |
103 | Binary Tree Zigzag Level Order Traversal | Medium | To Do | To Do | To Do | To Do |
104 | Maximum Depth of Binary Tree | Easy | To Do | To Do | To Do | To Do |
105 | Construct Binary Tree from Preorder and Inorder Traversal | Medium | To Do | To Do | To Do | To Do |
106 | Construct Binary Tree from Inorder and Postorder Traversal | Medium | To Do | To Do | To Do | To Do |
107 | Binary Tree Level Order Traversal II | Easy | To Do | To Do | To Do | To Do |
108 | Convert Sorted Array to Binary Search Tree | Easy | To Do | To Do | To Do | To Do |
109 | Convert Sorted List to Binary Search Tree | Medium | To Do | To Do | To Do | To Do |
110 | Balanced Binary Tree | Easy | To Do | To Do | To Do | To Do |
111 | Minimum Depth of Binary Tree | Easy | To Do | To Do | To Do | To Do |
112 | Path Sum | Easy | To Do | To Do | To Do | To Do |
113 | Path Sum II | Medium | To Do | To Do | To Do | To Do |
114 | Flatten Binary Tree to Linked List | Medium | To Do | To Do | To Do | To Do |
115 | Distinct Subsequences | Hard | To Do | To Do | To Do | To Do |
116 | Populating Next Right Pointers in Each Node | Medium | To Do | To Do | To Do | To Do |
117 | Populating Next Right Pointers in Each Node II | Medium | To Do | To Do | To Do | To Do |
118 | Pascal's Triangle | Easy | To Do | To Do | To Do | To Do |
119 | Pascal's Triangle II | Easy | To Do | To Do | To Do | To Do |
120 | Triangle | Medium | To Do | To Do | To Do | To Do |
121 | Best Time to Buy and Sell Stock | Easy | To Do | To Do | To Do | To Do |
122 | Best Time to Buy and Sell Stock II | Easy | To Do | To Do | To Do | To Do |
123 | Best Time to Buy and Sell Stock III | Hard | To Do | To Do | To Do | To Do |
124 | Binary Tree Maximum Path Sum | Hard | To Do | To Do | To Do | To Do |
125 | Valid Palindrome | Easy | To Do | To Do | To Do | To Do |
126 | Word Ladder II | Hard | To Do | To Do | To Do | To Do |
127 | Word Ladder | Medium | To Do | To Do | To Do | To Do |
128 | Longest Consecutive Sequence | Hard | To Do | To Do | To Do | To Do |
129 | Sum Root to Leaf Numbers | Medium | To Do | To Do | To Do | To Do |
130 | Surrounded Regions | Medium | To Do | To Do | To Do | To Do |
131 | Palindrome Partitioning | Medium | To Do | To Do | To Do | To Do |
132 | Palindrome Partitioning II | Hard | To Do | To Do | To Do | To Do |
133 | Clone Graph | Medium | To Do | To Do | To Do | To Do |
134 | Gas Station | Medium | To Do | To Do | To Do | To Do |
135 | Candy | Hard | To Do | To Do | To Do | To Do |
136 | Single Number | Easy | To Do | To Do | To Do | To Do |
137 | Single Number II | Medium | To Do | To Do | To Do | To Do |
138 | Copy List with Random Pointer | Medium | To Do | To Do | To Do | To Do |
139 | Word Break | Medium | To Do | To Do | To Do | To Do |
140 | Word Break II | Hard | To Do | To Do | To Do | To Do |
141 | Linked List Cycle | Easy | To Do | To Do | To Do | To Do |
142 | Linked List Cycle II | Medium | To Do | To Do | To Do | To Do |
143 | Reorder List | Medium | To Do | To Do | To Do | To Do |
144 | Binary Tree Preorder Traversal | Medium | To Do | To Do | To Do | To Do |
145 | Binary Tree Postorder Traversal | Hard | To Do | To Do | To Do | To Do |
146 | LRU Cache | Hard | To Do | To Do | To Do | To Do |
147 | Insertion Sort List | Medium | To Do | To Do | To Do | To Do |
148 | Sort List | Medium | To Do | To Do | To Do | To Do |
149 | Max Points on a Line | Hard | To Do | To Do | To Do | To Do |
150 | Evaluate Reverse Polish Notation | Medium | To Do | To Do | To Do | To Do |
151 | Reverse Words in a String | Medium | To Do | To Do | To Do | To Do |
152 | Maximum Product Subarray | Medium | To Do | To Do | To Do | To Do |
153 | Find Minimum in Rotated Sorted Array | Medium | To Do | To Do | To Do | To Do |
154 | Find Minimum in Rotated Sorted Array II | Hard | To Do | To Do | To Do | To Do |
155 | Min Stack | Easy | To Do | To Do | To Do | To Do |
156 | Binary Tree Upside Down 🔒 | Medium | To Do | To Do | To Do | To Do |
157 | Read N Characters Given Read4 🔒 | Easy | To Do | To Do | To Do | To Do |
158 | Read N Characters Given Read4 II - Call multiple times 🔒 | Hard | To Do | To Do | To Do | To Do |
159 | Longest Substring with At Most Two Distinct Characters 🔒 | Hard | To Do | To Do | To Do | To Do |
160 | Intersection of Two Linked Lists | Easy | To Do | To Do | To Do | To Do |
161 | One Edit Distance 🔒 | Medium | To Do | To Do | To Do | To Do |
162 | Find Peak Element | Medium | To Do | To Do | To Do | To Do |
163 | Missing Ranges 🔒 | Medium | To Do | To Do | To Do | To Do |
164 | Maximum Gap | Hard | To Do | To Do | To Do | To Do |
165 | Compare Version Numbers | Medium | To Do | To Do | To Do | To Do |
166 | Fraction to Recurring Decimal | Medium | To Do | To Do | To Do | To Do |
167 | Two Sum II - Input array is sorted | Easy | To Do | To Do | To Do | To Do |
168 | Excel Sheet Column Title | Easy | To Do | To Do | To Do | To Do |
169 | Majority Element | Easy | To Do | To Do | To Do | To Do |
170 | Two Sum III - Data structure design 🔒 | Easy | To Do | To Do | To Do | To Do |
171 | Excel Sheet Column Number | Easy | To Do | To Do | To Do | To Do |
172 | Factorial Trailing Zeroes | Easy | To Do | To Do | To Do | To Do |
173 | Binary Search Tree Iterator | Medium | To Do | To Do | To Do | To Do |
174 | Dungeon Game | Hard | To Do | To Do | To Do | To Do |
179 | Largest Number | Medium | To Do | To Do | To Do | To Do |
186 | Reverse Words in a String II 🔒 | Medium | To Do | To Do | To Do | To Do |
187 | Repeated DNA Sequences | Medium | To Do | To Do | To Do | To Do |
188 | Best Time to Buy and Sell Stock IV | Hard | To Do | To Do | To Do | To Do |
189 | Rotate Array | Easy | To Do | To Do | To Do | To Do |
190 | Reverse Bits | Easy | To Do | To Do | To Do | To Do |
191 | Number of 1 Bits | Easy | To Do | To Do | To Do | To Do |
198 | House Robber | Easy | To Do | To Do | To Do | To Do |
199 | Binary Tree Right Side View | Medium | To Do | To Do | To Do | To Do |
200 | Number of Islands | Medium | To Do | To Do | To Do | To Do |
201 | Bitwise AND of Numbers Range | Medium | To Do | To Do | To Do | To Do |
202 | Happy Number | Easy | To Do | To Do | To Do | To Do |
203 | Remove Linked List Elements | Easy | To Do | To Do | To Do | To Do |
204 | Count Primes | Easy | To Do | To Do | To Do | To Do |
205 | Isomorphic Strings | Easy | To Do | To Do | To Do | To Do |
206 | Reverse Linked List | Easy | To Do | To Do | To Do | To Do |
207 | Course Schedule | Medium | To Do | To Do | To Do | To Do |
208 | Implement Trie (Prefix Tree) | Medium | To Do | To Do | To Do | To Do |
209 | Minimum Size Subarray Sum | Medium | To Do | To Do | To Do | To Do |
210 | Course Schedule II | Medium | To Do | To Do | To Do | To Do |
211 | Add and Search Word - Data structure design | Medium | To Do | To Do | To Do | To Do |
212 | Word Search II | Hard | To Do | To Do | To Do | To Do |
213 | House Robber II | Medium | To Do | To Do | To Do | To Do |
214 | Shortest Palindrome | Hard | To Do | To Do | To Do | To Do |
215 | Kth Largest Element in an Array | Medium | To Do | To Do | To Do | To Do |
216 | Combination Sum III | Medium | To Do | To Do | To Do | To Do |
217 | Contains Duplicate | Easy | To Do | To Do | To Do | To Do |
218 | The Skyline Problem | Hard | To Do | To Do | To Do | To Do |
219 | Contains Duplicate II | Easy | To Do | To Do | To Do | To Do |
220 | Contains Duplicate III | Medium | To Do | To Do | To Do | To Do |
221 | Maximal Square | Medium | To Do | To Do | To Do | To Do |
222 | Count Complete Tree Nodes | Medium | To Do | To Do | To Do | To Do |
223 | Rectangle Area | Medium | To Do | To Do | To Do | To Do |
224 | Basic Calculator | Hard | To Do | To Do | To Do | To Do |
225 | Implement Stack using Queues | Easy | To Do | To Do | To Do | To Do |
226 | Invert Binary Tree | Easy | To Do | To Do | To Do | To Do |
227 | Basic Calculator II | Medium | To Do | To Do | To Do | To Do |
228 | Summary Ranges | Medium | To Do | To Do | To Do | To Do |
229 | Majority Element II | Medium | To Do | To Do | To Do | To Do |
230 | Kth Smallest Element in a BST | Medium | To Do | To Do | To Do | To Do |
231 | Power of Two | Easy | To Do | To Do | To Do | To Do |
232 | Implement Queue using Stacks | Easy | To Do | To Do | To Do | To Do |
233 | Number of Digit One | Hard | To Do | To Do | To Do | To Do |
234 | Palindrome Linked List | Easy | To Do | To Do | To Do | To Do |
235 | Lowest Common Ancestor of a Binary Search Tree | Easy | To Do | To Do | To Do | To Do |
236 | Lowest Common Ancestor of a Binary Tree | Medium | To Do | To Do | To Do | To Do |
237 | Delete Node in a Linked List | Easy | To Do | To Do | To Do | To Do |
238 | Product of Array Except Self | Medium | To Do | To Do | To Do | To Do |
239 | Sliding Window Maximum | Hard | To Do | To Do | To Do | To Do |
240 | Search a 2D Matrix II | Medium | To Do | To Do | To Do | To Do |
241 | Different Ways to Add Parentheses | Medium | To Do | To Do | To Do | To Do |
242 | Valid Anagram | Easy | To Do | To Do | To Do | To Do |
243 | Shortest Word Distance 🔒 | Easy | To Do | To Do | To Do | To Do |
244 | Shortest Word Distance II 🔒 | Medium | To Do | To Do | To Do | To Do |
245 | Shortest Word Distance III 🔒 | Medium | To Do | To Do | To Do | To Do |
246 | Strobogrammatic Number 🔒 | Easy | To Do | To Do | To Do | To Do |
247 | Strobogrammatic Number II 🔒 | Medium | To Do | To Do | To Do | To Do |
248 | Strobogrammatic Number III 🔒 | Hard | To Do | To Do | To Do | To Do |
249 | Group Shifted Strings 🔒 | Medium | To Do | To Do | To Do | To Do |
250 | Count Univalue Subtrees 🔒 | Medium | To Do | To Do | To Do | To Do |
251 | Flatten 2D Vector 🔒 | Medium | To Do | To Do | To Do | To Do |
252 | Meeting Rooms 🔒 | Easy | To Do | To Do | To Do | To Do |
253 | Meeting Rooms II 🔒 | Medium | To Do | To Do | To Do | To Do |
254 | Factor Combinations 🔒 | Medium | To Do | To Do | To Do | To Do |
255 | Verify Preorder Sequence in Binary Search Tree 🔒 | Medium | To Do | To Do | To Do | To Do |
256 | Paint House 🔒 | Easy | To Do | To Do | To Do | To Do |
257 | Binary Tree Paths | Easy | To Do | To Do | To Do | To Do |
258 | Add Digits | Easy | To Do | To Do | To Do | To Do |
259 | 3Sum Smaller 🔒 | Medium | To Do | To Do | To Do | To Do |
260 | Single Number III | Medium | To Do | To Do | To Do | To Do |
261 | Graph Valid Tree 🔒 | Medium | To Do | To Do | To Do | To Do |
263 | Ugly Number | Easy | To Do | To Do | To Do | To Do |
264 | Ugly Number II | Medium | To Do | To Do | To Do | To Do |
265 | Paint House II 🔒 | Hard | To Do | To Do | To Do | To Do |
266 | Palindrome Permutation 🔒 | Easy | To Do | To Do | To Do | To Do |
267 | Palindrome Permutation II 🔒 | Medium | To Do | To Do | To Do | To Do |
268 | Missing Number | Easy | To Do | To Do | To Do | To Do |
269 | Alien Dictionary 🔒 | Hard | To Do | To Do | To Do | To Do |
270 | Closest Binary Search Tree Value 🔒 | Easy | To Do | To Do | To Do | To Do |
271 | Encode and Decode Strings 🔒 | Medium | To Do | To Do | To Do | To Do |
272 | Closest Binary Search Tree Value II 🔒 | Hard | To Do | To Do | To Do | To Do |
273 | Integer to English Words | Hard | To Do | To Do | To Do | To Do |
274 | H-Index | Medium | To Do | To Do | To Do | To Do |
275 | H-Index II | Medium | To Do | To Do | To Do | To Do |
276 | Paint Fence 🔒 | Easy | To Do | To Do | To Do | To Do |
277 | Find the Celebrity 🔒 | Medium | To Do | To Do | To Do | To Do |
278 | First Bad Version | Easy | To Do | To Do | To Do | To Do |
279 | Perfect Squares | Medium | To Do | To Do | To Do | To Do |
280 | Wiggle Sort 🔒 | Medium | To Do | To Do | To Do | To Do |
281 | Zigzag Iterator 🔒 | Medium | To Do | To Do | To Do | To Do |
282 | Expression Add Operators | Hard | To Do | To Do | To Do | To Do |
283 | Move Zeroes | Easy | To Do | To Do | To Do | To Do |
284 | Peeking Iterator | Medium | To Do | To Do | To Do | To Do |
285 | Inorder Successor in BST 🔒 | Medium | To Do | To Do | To Do | To Do |
286 | Walls and Gates 🔒 | Medium | To Do | To Do | To Do | To Do |
287 | Find the Duplicate Number | Medium | To Do | To Do | To Do | To Do |
288 | Unique Word Abbreviation 🔒 | Medium | To Do | To Do | To Do | To Do |
289 | Game of Life | Medium | To Do | To Do | To Do | To Do |
290 | Word Pattern | Easy | To Do | To Do | To Do | To Do |
291 | Word Pattern II 🔒 | Hard | To Do | To Do | To Do | To Do |
292 | Nim Game | Easy | To Do | To Do | To Do | To Do |
293 | Flip Game 🔒 | Easy | To Do | To Do | To Do | To Do |
294 | Flip Game II 🔒 | Medium | To Do | To Do | To Do | To Do |
295 | Find Median from Data Stream | Hard | To Do | To Do | To Do | To Do |
296 | Best Meeting Point 🔒 | Hard | To Do | To Do | To Do | To Do |
297 | Serialize and Deserialize Binary Tree | Hard | To Do | To Do | To Do | To Do |
298 | Binary Tree Longest Consecutive Sequence 🔒 | Medium | To Do | To Do | To Do | To Do |
299 | Bulls and Cows | Medium | To Do | To Do | To Do | To Do |
300 | Longest Increasing Subsequence | Medium | To Do | To Do | To Do | To Do |
301 | Remove Invalid Parentheses | Hard | To Do | To Do | To Do | To Do |
302 | Smallest Rectangle Enclosing Black Pixels 🔒 | Hard | To Do | To Do | To Do | To Do |
303 | Range Sum Query - Immutable | Easy | To Do | To Do | To Do | To Do |
304 | Range Sum Query 2D - Immutable | Medium | To Do | To Do | To Do | To Do |
305 | Number of Islands II 🔒 | Hard | To Do | To Do | To Do | To Do |
306 | Additive Number | Medium | To Do | To Do | To Do | To Do |
307 | Range Sum Query - Mutable | Medium | To Do | To Do | To Do | To Do |
308 | Range Sum Query 2D - Mutable 🔒 | Hard | To Do | To Do | To Do | To Do |
309 | Best Time to Buy and Sell Stock with Cooldown | Medium | To Do | To Do | To Do | To Do |
310 | Minimum Height Trees | Medium | To Do | To Do | To Do | To Do |
311 | Sparse Matrix Multiplication 🔒 | Medium | To Do | To Do | To Do | To Do |
312 | Burst Balloons | Hard | To Do | To Do | To Do | To Do |
313 | Super Ugly Number | Medium | To Do | To Do | To Do | To Do |
314 | Binary Tree Vertical Order Traversal 🔒 | Medium | To Do | To Do | To Do | To Do |
315 | Count of Smaller Numbers After Self | Hard | To Do | To Do | To Do | To Do |
316 | Remove Duplicate Letters | Hard | To Do | To Do | To Do | To Do |
317 | Shortest Distance from All Buildings 🔒 | Hard | To Do | To Do | To Do | To Do |
318 | Maximum Product of Word Lengths | Medium | To Do | To Do | To Do | To Do |
319 | Bulb Switcher | Medium | To Do | To Do | To Do | To Do |
320 | Generalized Abbreviation 🔒 | Medium | To Do | To Do | To Do | To Do |
321 | Create Maximum Number | Hard | To Do | To Do | To Do | To Do |
322 | Coin Change | Medium | To Do | To Do | To Do | To Do |
323 | Number of Connected Components in an Undirected Graph 🔒 | Medium | To Do | To Do | To Do | To Do |
324 | Wiggle Sort II | Medium | To Do | To Do | To Do | To Do |
325 | Maximum Size Subarray Sum Equals k 🔒 | Medium | To Do | To Do | To Do | To Do |
326 | Power of Three | Easy | To Do | To Do | To Do | To Do |
327 | Count of Range Sum | Hard | To Do | To Do | To Do | To Do |
328 | Odd Even Linked List | Medium | To Do | To Do | To Do | To Do |
329 | Longest Increasing Path in a Matrix | Hard | To Do | To Do | To Do | To Do |
330 | Patching Array | Hard | To Do | To Do | To Do | To Do |
331 | Verify Preorder Serialization of a Binary Tree | Medium | To Do | To Do | To Do | To Do |
332 | Reconstruct Itinerary | Medium | To Do | To Do | To Do | To Do |
333 | Largest BST Subtree 🔒 | Medium | To Do | To Do | To Do | To Do |
334 | Increasing Triplet Subsequence | Medium | To Do | To Do | To Do | To Do |
335 | Self Crossing | Hard | To Do | To Do | To Do | To Do |
336 | Palindrome Pairs | Hard | To Do | To Do | To Do | To Do |
337 | House Robber III | Medium | To Do | To Do | To Do | To Do |
338 | Counting Bits | Medium | To Do | To Do | To Do | To Do |
339 | Nested List Weight Sum 🔒 | Easy | To Do | To Do | To Do | To Do |
340 | Longest Substring with At Most K Distinct Characters 🔒 | Hard | To Do | To Do | To Do | To Do |
341 | Flatten Nested List Iterator | Medium | To Do | To Do | To Do | To Do |
342 | Power of Four | Easy | To Do | To Do | To Do | To Do |
343 | Integer Break | Medium | To Do | To Do | To Do | To Do |
344 | Reverse String | Easy | To Do | To Do | To Do | To Do |
345 | Reverse Vowels of a String | Easy | To Do | To Do | To Do | To Do |
346 | Moving Average from Data Stream 🔒 | Easy | To Do | To Do | To Do | To Do |
347 | Top K Frequent Elements | Medium | To Do | To Do | To Do | To Do |
348 | Design Tic-Tac-Toe 🔒 | Medium | To Do | To Do | To Do | To Do |
349 | Intersection of Two Arrays | Easy | To Do | To Do | To Do | To Do |
350 | Intersection of Two Arrays II | Easy | To Do | To Do | To Do | To Do |
351 | Android Unlock Patterns 🔒 | Medium | To Do | To Do | To Do | To Do |
352 | Data Stream as Disjoint Intervals | Hard | To Do | To Do | To Do | To Do |
353 | Design Snake Game 🔒 | Medium | To Do | To Do | To Do | To Do |
354 | Russian Doll Envelopes | Hard | To Do | To Do | To Do | To Do |
355 | Design Twitter | Medium | To Do | To Do | To Do | To Do |
356 | Line Reflection 🔒 | Medium | To Do | To Do | To Do | To Do |
357 | Count Numbers with Unique Digits | Medium | To Do | To Do | To Do | To Do |
358 | Rearrange String k Distance Apart 🔒 | Hard | To Do | To Do | To Do | To Do |
359 | Logger Rate Limiter 🔒 | Easy | To Do | To Do | To Do | To Do |
360 | Sort Transformed Array 🔒 | Medium | To Do | To Do | To Do | To Do |
361 | Bomb Enemy 🔒 | Medium | To Do | To Do | To Do | To Do |
362 | Design Hit Counter 🔒 | Medium | To Do | To Do | To Do | To Do |
363 | Max Sum of Rectangle No Larger Than K | Hard | To Do | To Do | To Do | To Do |
364 | Nested List Weight Sum II 🔒 | Medium | To Do | To Do | To Do | To Do |
365 | Water and Jug Problem | Medium | To Do | To Do | To Do | To Do |
366 | Find Leaves of Binary Tree 🔒 | Medium | To Do | To Do | To Do | To Do |
367 | Valid Perfect Square | Easy | To Do | To Do | To Do | To Do |
368 | Largest Divisible Subset | Medium | To Do | To Do | To Do | To Do |
369 | Plus One Linked List 🔒 | Medium | To Do | To Do | To Do | To Do |
370 | Range Addition 🔒 | Medium | To Do | To Do | To Do | To Do |
371 | Sum of Two Integers | Easy | To Do | To Do | To Do | To Do |
372 | Super Pow | Medium | To Do | To Do | To Do | To Do |
373 | Find K Pairs with Smallest Sums | Medium | To Do | To Do | To Do | To Do |
374 | Guess Number Higher or Lower | Easy | To Do | To Do | To Do | To Do |
375 | Guess Number Higher or Lower II | Medium | To Do | To Do | To Do | To Do |
376 | Wiggle Subsequence | Medium | To Do | To Do | To Do | To Do |
377 | Combination Sum IV | Medium | To Do | To Do | To Do | To Do |
378 | Kth Smallest Element in a Sorted Matrix | Medium | To Do | To Do | To Do | To Do |
379 | Design Phone Directory 🔒 | Medium | To Do | To Do | To Do | To Do |
380 | Insert Delete GetRandom O(1) | Medium | To Do | To Do | To Do | To Do |
381 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard | To Do | To Do | To Do | To Do |
382 | Linked List Random Node | Medium | To Do | To Do | To Do | To Do |
383 | Ransom Note | Easy | To Do | To Do | To Do | To Do |
384 | Shuffle an Array | Medium | To Do | To Do | To Do | To Do |
385 | Mini Parser | Medium | To Do | To Do | To Do | To Do |
386 | Lexicographical Numbers | Medium | To Do | To Do | To Do | To Do |
387 | First Unique Character in a String | Easy | To Do | To Do | To Do | To Do |
388 | Longest Absolute File Path | Medium | To Do | To Do | To Do | To Do |
389 | Find the Difference | Easy | To Do | To Do | To Do | To Do |
390 | Elimination Game | Medium | To Do | To Do | To Do | To Do |
391 | Perfect Rectangle | Hard | To Do | To Do | To Do | To Do |
392 | Is Subsequence | Medium | To Do | To Do | To Do | To Do |
393 | UTF-8 Validation | Medium | To Do | To Do | To Do | To Do |
394 | Decode String | Medium | To Do | To Do | To Do | To Do |
395 | Longest Substring with At Least K Repeating Characters | Medium | To Do | To Do | To Do | To Do |
396 | Rotate Function | Medium | To Do | To Do | To Do | To Do |
397 | Integer Replacement | Medium | To Do | To Do | To Do | To Do |
398 | Random Pick Index | Medium | To Do | To Do | To Do | To Do |
399 | Evaluate Division | Medium | To Do | To Do | To Do | To Do |
400 | Nth Digit | Easy | To Do | To Do | To Do | To Do |
401 | Binary Watch | Easy | To Do | To Do | To Do | To Do |
402 | Remove K Digits | Medium | To Do | To Do | To Do | To Do |
403 | Frog Jump | Hard | To Do | To Do | To Do | To Do |
404 | Sum of Left Leaves | Easy | To Do | To Do | To Do | To Do |
405 | Convert a Number to Hexadecimal | Easy | To Do | To Do | To Do | To Do |
406 | Queue Reconstruction by Height | Medium | To Do | To Do | To Do | To Do |
407 | Trapping Rain Water II | Hard | To Do | To Do | To Do | To Do |
408 | Valid Word Abbreviation 🔒 | Easy | To Do | To Do | To Do | To Do |
409 | Longest Palindrome | Easy | To Do | To Do | To Do | To Do |
410 | Split Array Largest Sum | Hard | To Do | To Do | To Do | To Do |
411 | Minimum Unique Word Abbreviation 🔒 | Hard | To Do | To Do | To Do | To Do |
412 | Fizz Buzz | Easy | To Do | To Do | To Do | To Do |
413 | Arithmetic Slices | Medium | To Do | To Do | To Do | To Do |
414 | Third Maximum Number | Easy | To Do | To Do | To Do | To Do |
415 | Add Strings | Easy | To Do | To Do | To Do | To Do |
416 | Partition Equal Subset Sum | Medium | To Do | To Do | To Do | To Do |
417 | Pacific Atlantic Water Flow | Medium | To Do | To Do | To Do | To Do |
418 | Sentence Screen Fitting 🔒 | Medium | To Do | To Do | To Do | To Do |
419 | Battleships in a Board | Medium | To Do | To Do | To Do | To Do |
420 | Strong Password Checker | Hard | To Do | To Do | To Do | To Do |
421 | Maximum XOR of Two Numbers in an Array | Medium | To Do | To Do | To Do | To Do |
422 | Valid Word Square 🔒 | Easy | To Do | To Do | To Do | To Do |
423 | Reconstruct Original Digits from English | Medium | To Do | To Do | To Do | To Do |
424 | Longest Repeating Character Replacement | Medium | To Do | To Do | To Do | To Do |
425 | Word Squares 🔒 | Hard | To Do | To Do | To Do | To Do |
432 | All O`one Data Structure | Hard | To Do | To Do | To Do | To Do |
434 | Number of Segments in a String | Easy | To Do | To Do | To Do | To Do |
435 | Non-overlapping Intervals | Medium | To Do | To Do | To Do | To Do |
436 | Find Right Interval | Medium | To Do | To Do | To Do | To Do |
437 | Path Sum III | Easy | To Do | To Do | To Do | To Do |
438 | Find All Anagrams in a String | Easy | To Do | To Do | To Do | To Do |
439 | Ternary Expression Parser 🔒 | Medium | To Do | To Do | To Do | To Do |
440 | K-th Smallest in Lexicographical Order | Hard | To Do | To Do | To Do | To Do |
441 | Arranging Coins | Easy | To Do | To Do | To Do | To Do |
442 | Find All Duplicates in an Array | Medium | To Do | To Do | To Do | To Do |
443 | String Compression | Easy | To Do | To Do | To Do | To Do |
444 | Sequence Reconstruction 🔒 | Medium | To Do | To Do | To Do | To Do |
445 | Add Two Numbers II | Medium | To Do | To Do | To Do | To Do |
446 | Arithmetic Slices II - Subsequence | Hard | To Do | To Do | To Do | To Do |
447 | Number of Boomerangs | Easy | To Do | To Do | To Do | To Do |
448 | Find All Numbers Disappeared in an Array | Easy | To Do | To Do | To Do | To Do |
449 | Serialize and Deserialize BST | Medium | To Do | To Do | To Do | To Do |
450 | Delete Node in a BST | Medium | To Do | To Do | To Do | To Do |
451 | Sort Characters By Frequency | Medium | To Do | To Do | To Do | To Do |
452 | Minimum Number of Arrows to Burst Balloons | Medium | To Do | To Do | To Do | To Do |
453 | Minimum Moves to Equal Array Elements | Easy | To Do | To Do | To Do | To Do |
454 | 4Sum II | Medium | To Do | To Do | To Do | To Do |
455 | Assign Cookies | Easy | To Do | To Do | To Do | To Do |
456 | 132 Pattern | Medium | To Do | To Do | To Do | To Do |
459 | Repeated Substring Pattern | Easy | To Do | To Do | To Do | To Do |
460 | LFU Cache | Hard | To Do | To Do | To Do | To Do |
461 | Hamming Distance | Easy | To Do | To Do | To Do | To Do |
462 | Minimum Moves to Equal Array Elements II | Medium | To Do | To Do | To Do | To Do |
463 | Island Perimeter | Easy | To Do | To Do | To Do | To Do |
464 | Can I Win | Medium | To Do | To Do | To Do | To Do |
465 | Optimal Account Balancing 🔒 | Hard | To Do | To Do | To Do | To Do |
466 | Count The Repetitions | Hard | To Do | To Do | To Do | To Do |
467 | Unique Substrings in Wraparound String | Medium | To Do | To Do | To Do | To Do |
468 | Validate IP Address | Medium | To Do | To Do | To Do | To Do |
469 | Convex Polygon 🔒 | Medium | To Do | To Do | To Do | To Do |
471 | Encode String with Shortest Length 🔒 | Hard | To Do | To Do | To Do | To Do |
472 | Concatenated Words | Hard | To Do | To Do | To Do | To Do |
473 | Matchsticks to Square | Medium | To Do | To Do | To Do | To Do |
474 | Ones and Zeroes | Medium | To Do | To Do | To Do | To Do |
475 | Heaters | Easy | To Do | To Do | To Do | To Do |
476 | Number Complement | Easy | To Do | To Do | To Do | To Do |
477 | Total Hamming Distance | Medium | To Do | To Do | To Do | To Do |
479 | Largest Palindrome Product | Easy | To Do | To Do | To Do | To Do |
480 | Sliding Window Median | Hard | To Do | To Do | To Do | To Do |
481 | Magical String | Medium | To Do | To Do | To Do | To Do |
482 | License Key Formatting | Easy | To Do | To Do | To Do | To Do |
483 | Smallest Good Base | Hard | To Do | To Do | To Do | To Do |
484 | Find Permutation 🔒 | Medium | To Do | To Do | To Do | To Do |
485 | Max Consecutive Ones | Easy | To Do | To Do | To Do | To Do |
486 | Predict the Winner | Medium | To Do | To Do | To Do | To Do |
487 | Max Consecutive Ones II 🔒 | Medium | To Do | To Do | To Do | To Do |
488 | Zuma Game | Hard | To Do | To Do | To Do | To Do |
490 | The Maze 🔒 | Medium | To Do | To Do | To Do | To Do |
491 | Increasing Subsequences | Medium | To Do | To Do | To Do | To Do |
492 | Construct the Rectangle | Easy | To Do | To Do | To Do | To Do |
493 | Reverse Pairs | Hard | To Do | To Do | To Do | To Do |
494 | Target Sum | Medium | To Do | To Do | To Do | To Do |
495 | Teemo Attacking | Medium | To Do | To Do | To Do | To Do |
496 | Next Greater Element I | Easy | To Do | To Do | To Do | To Do |
498 | Diagonal Traverse | Medium | To Do | To Do | To Do | To Do |
499 | The Maze III 🔒 | Hard | To Do | To Do | To Do | To Do |
500 | Keyboard Row | Easy | To Do | To Do | To Do | To Do |
501 | Find Mode in Binary Search Tree | Easy | To Do | To Do | To Do | To Do |
502 | IPO | Hard | To Do | To Do | To Do | To Do |
503 | Next Greater Element II | Medium | To Do | To Do | To Do | To Do |
504 | Base 7 | Easy | To Do | To Do | To Do | To Do |
505 | The Maze II 🔒 | Medium | To Do | To Do | To Do | To Do |
506 | Relative Ranks | Easy | To Do | To Do | To Do | To Do |
507 | Perfect Number | Easy | To Do | To Do | To Do | To Do |
508 | Most Frequent Subtree Sum | Medium | To Do | To Do | To Do | To Do |
513 | Find Bottom Left Tree Value | Medium | To Do | To Do | To Do | To Do |
514 | Freedom Trail | Hard | To Do | To Do | To Do | To Do |
515 | Find Largest Value in Each Tree Row | Medium | To Do | To Do | To Do | To Do |
516 | Longest Palindromic Subsequence | Medium | To Do | To Do | To Do | To Do |
517 | Super Washing Machines | Hard | To Do | To Do | To Do | To Do |
520 | Detect Capital | Easy | To Do | To Do | To Do | To Do |
521 | Longest Uncommon Subsequence I | Easy | To Do | To Do | To Do | To Do |
522 | Longest Uncommon Subsequence II | Medium | To Do | To Do | To Do | To Do |
523 | Continuous Subarray Sum | Medium | To Do | To Do | To Do | To Do |
524 | Longest Word in Dictionary through Deleting | Medium | To Do | To Do | To Do | To Do |
525 | Contiguous Array | Medium | To Do | To Do | To Do | To Do |
526 | Beautiful Arrangement | Medium | To Do | To Do | To Do | To Do |
527 | Word Abbreviation 🔒 | Hard | To Do | To Do | To Do | To Do |
529 | Minesweeper | Medium | To Do | To Do | To Do | To Do |
530 | Minimum Absolute Difference in BST | Easy | To Do | To Do | To Do | To Do |
531 | Lonely Pixel I 🔒 | Medium | To Do | To Do | To Do | To Do |
532 | K-diff Pairs in an Array | Easy | To Do | To Do | To Do | To Do |
533 | Lonely Pixel II 🔒 | Medium | To Do | To Do | To Do | To Do |
535 | Encode and Decode TinyURL | Medium | To Do | To Do | To Do | To Do |
536 | Construct Binary Tree from String 🔒 | Medium | To Do | To Do | To Do | To Do |
537 | Complex Number Multiplication | Medium | To Do | To Do | To Do | To Do |
538 | Convert BST to Greater Tree | Easy | To Do | To Do | To Do | To Do |
539 | Minimum Time Difference | Medium | To Do | To Do | To Do | To Do |
540 | Single Element in a Sorted Array | Medium | To Do | To Do | To Do | To Do |
541 | Reverse String II | Easy | To Do | To Do | To Do | To Do |
542 | 01 Matrix | Medium | To Do | To Do | To Do | To Do |
543 | Diameter of Binary Tree | Easy | To Do | To Do | To Do | To Do |
544 | Output Contest Matches 🔒 | Medium | To Do | To Do | To Do | To Do |
545 | Boundary of Binary Tree 🔒 | Medium | To Do | To Do | To Do | To Do |
546 | Remove Boxes | Hard | To Do | To Do | To Do | To Do |
547 | Friend Circles | Medium | To Do | To Do | To Do | To Do |
548 | Split Array with Equal Sum 🔒 | Medium | To Do | To Do | To Do | To Do |
549 | Binary Tree Longest Consecutive Sequence II 🔒 | Medium | To Do | To Do | To Do | To Do |
551 | Student Attendance Record I | Easy | To Do | To Do | To Do | To Do |
552 | Student Attendance Record II | Hard | To Do | To Do | To Do | To Do |
553 | Optimal Division | Medium | To Do | To Do | To Do | To Do |
554 | Brick Wall | Medium | To Do | To Do | To Do | To Do |
555 | Split Concatenated Strings 🔒 | Medium | To Do | To Do | To Do | To Do |
556 | Next Greater Element III | Medium | To Do | To Do | To Do | To Do |
557 | Reverse Words in a String III | Easy | To Do | To Do | To Do | To Do |
560 | Subarray Sum Equals K | Medium | To Do | To Do | To Do | To Do |
561 | Array Partition I | Easy | To Do | To Do | To Do | To Do |
562 | Longest Line of Consecutive One in Matrix 🔒 | Medium | To Do | To Do | To Do | To Do |
563 | Binary Tree Tilt | Easy | To Do | To Do | To Do | To Do |
564 | Find the Closest Palindrome | Hard | To Do | To Do | To Do | To Do |
565 | Array Nesting | Medium | To Do | To Do | To Do | To Do |
566 | Reshape the Matrix | Easy | To Do | To Do | To Do | To Do |
567 | Permutation in String | Medium | To Do | To Do | To Do | To Do |
568 | Maximum Vacation Days 🔒 | Hard | To Do | To Do | To Do | To Do |
572 | Subtree of Another Tree | Easy | To Do | To Do | To Do | To Do |
573 | Squirrel Simulation 🔒 | Medium | To Do | To Do | To Do | To Do |
575 | Distribute Candies | Easy | To Do | To Do | To Do | To Do |
576 | Out of Boundary Paths | Medium | To Do | To Do | To Do | To Do |
581 | Shortest Unsorted Continuous Subarray | Easy | To Do | To Do | To Do | To Do |
582 | Kill Process 🔒 | Medium | To Do | To Do | To Do | To Do |
583 | Delete Operation for Two Strings | Medium | To Do | To Do | To Do | To Do |
587 | Erect the Fence | Hard | To Do | To Do | To Do | To Do |
588 | Design In-Memory File System 🔒 | Hard | To Do | To Do | To Do | To Do |
591 | Tag Validator | Hard | To Do | To Do | To Do | To Do |
592 | Fraction Addition and Subtraction | Medium | To Do | To Do | To Do | To Do |
593 | Valid Square | Medium | To Do | To Do | To Do | To Do |
594 | Longest Harmonious Subsequence | Easy | To Do | To Do | To Do | To Do |
598 | Range Addition II | Easy | To Do | To Do | To Do | To Do |
599 | Minimum Index Sum of Two Lists | Easy | To Do | To Do | To Do | To Do |
600 | Non-negative Integers without Consecutive Ones | Hard | To Do | To Do | To Do | To Do |
604 | Design Compressed String Iterator 🔒 | Easy | To Do | To Do | To Do | To Do |
605 | Can Place Flowers | Easy | To Do | To Do | To Do | To Do |
606 | Construct String from Binary Tree | Easy | To Do | To Do | To Do | To Do |
609 | Find Duplicate File in System | Medium | To Do | To Do | To Do | To Do |
611 | Valid Triangle Number | Medium | To Do | To Do | To Do | To Do |
616 | Add Bold Tag in String 🔒 | Medium | To Do | To Do | To Do | To Do |
617 | Merge Two Binary Trees | Easy | To Do | To Do | To Do | To Do |
621 | Task Scheduler | Medium | To Do | To Do | To Do | To Do |
623 | Add One Row to Tree | Medium | To Do | To Do | To Do | To Do |
624 | Maximum Distance in Arrays 🔒 | Easy | To Do | To Do | To Do | To Do |
625 | Minimum Factorization 🔒 | Medium | To Do | To Do | To Do | To Do |
628 | Maximum Product of Three Numbers | Easy | To Do | To Do | To Do | To Do |
629 | K Inverse Pairs Array | Hard | To Do | To Do | To Do | To Do |
630 | Course Schedule III | Hard | To Do | To Do | To Do | To Do |
631 | Design Excel Sum Formula 🔒 | Hard | To Do | To Do | To Do | To Do |
632 | Smallest Range | Hard | To Do | To Do | To Do | To Do |
633 | Sum of Square Numbers | Easy | To Do | To Do | To Do | To Do |
634 | Find the Derangement of An Array 🔒 | Medium | To Do | To Do | To Do | To Do |
635 | Design Log Storage System 🔒 | Medium | To Do | To Do | To Do | To Do |
636 | Exclusive Time of Functions | Medium | To Do | To Do | To Do | To Do |
637 | Average of Levels in Binary Tree | Easy | To Do | To Do | To Do | To Do |
638 | Shopping Offers | Medium | To Do | To Do | To Do | To Do |
639 | Decode Ways II | Hard | To Do | To Do | To Do | To Do |
640 | Solve the Equation | Medium | To Do | To Do | To Do | To Do |
642 | Design Search Autocomplete System 🔒 | Hard | To Do | To Do | To Do | To Do |
643 | Maximum Average Subarray I | Easy | To Do | To Do | To Do | To Do |
644 | Maximum Average Subarray II 🔒 | Hard | To Do | To Do | To Do | To Do |
645 | Set Mismatch | Easy | To Do | To Do | To Do | To Do |
646 | Maximum Length of Pair Chain | Medium | To Do | To Do | To Do | To Do |
647 | Palindromic Substrings | Medium | To Do | To Do | To Do | To Do |
648 | Replace Words | Medium | To Do | To Do | To Do | To Do |
649 | Dota2 Senate | Medium | To Do | To Do | To Do | To Do |
650 | 2 Keys Keyboard | Medium | To Do | To Do | To Do | To Do |
651 | 4 Keys Keyboard 🔒 | Medium | To Do | To Do | To Do | To Do |
652 | Find Duplicate Subtrees | Medium | To Do | To Do | To Do | To Do |
653 | Two Sum IV - Input is a BST | Easy | To Do | To Do | To Do | To Do |
654 | Maximum Binary Tree | Medium | To Do | To Do | To Do | To Do |
655 | Print Binary Tree | Medium | To Do | To Do | To Do | To Do |
656 | Coin Path 🔒 | Hard | To Do | To Do | To Do | To Do |
657 | Judge Route Circle | Easy | To Do | To Do | To Do | To Do |
658 | Find K Closest Elements | Medium | To Do | To Do | To Do | To Do |
659 | Split Array into Consecutive Subsequences | Medium | To Do | To Do | To Do | To Do |
660 | Remove 9 🔒 | Hard | To Do | To Do | To Do | To Do |
661 | Image Smoother | Easy | To Do | To Do | To Do | To Do |
662 | Maximum Width of Binary Tree | Medium | To Do | To Do | To Do | To Do |
663 | Equal Tree Partition 🔒 | Medium | To Do | To Do | To Do | To Do |
664 | Strange Printer | Hard | To Do | To Do | To Do | To Do |
665 | Non-decreasing Array | Easy | To Do | To Do | To Do | To Do |
666 | Path Sum IV 🔒 | Medium | To Do | To Do | To Do | To Do |
667 | Beautiful Arrangement II | Medium | To Do | To Do | To Do | To Do |
668 | Kth Smallest Number in Multiplication Table | Hard | To Do | To Do | To Do | To Do |
669 | Trim a Binary Search Tree | Easy | To Do | To Do | To Do | To Do |
670 | Maximum Swap | Medium | To Do | To Do | To Do | To Do |
671 | Second Minimum Node In a Binary Tree | Easy | To Do | To Do | To Do | To Do |
672 | Bulb Switcher II | Medium | To Do | To Do | To Do | To Do |
673 | Number of Longest Increasing Subsequence | Medium | To Do | To Do | To Do | To Do |
674 | Longest Continuous Increasing Subsequence | Easy | To Do | To Do | To Do | To Do |
675 | Cut Off Trees for Golf Event | Hard | To Do | To Do | To Do | To Do |
676 | Implement Magic Dictionary | Medium | To Do | To Do | To Do | To Do |
677 | Map Sum Pairs | Medium | To Do | To Do | To Do | To Do |
678 | Valid Parenthesis String | Medium | To Do | To Do | To Do | To Do |
679 | 24 Game | Hard | To Do | To Do | To Do | To Do |
680 | Valid Palindrome II | Easy | To Do | To Do | To Do | To Do |
681 | Next Closest Time 🔒 | Medium | To Do | To Do | To Do | To Do |
682 | Baseball Game | Easy | To Do | To Do | To Do | To Do |
683 | K Empty Slots 🔒 | Hard | To Do | To Do | To Do | To Do |
684 | Redundant Connection | Medium | To Do | To Do | To Do | To Do |
685 | Redundant Connection II | Hard | To Do | To Do | To Do | To Do |
686 | Repeated String Match | Easy | To Do | To Do | To Do | To Do |
687 | Longest Univalue Path | Easy | To Do | To Do | To Do | To Do |
688 | Knight Probability in Chessboard | Medium | To Do | To Do | To Do | To Do |
689 | Maximum Sum of 3 Non-Overlapping Subarrays | Hard | To Do | To Do | To Do | To Do |
690 | Employee Importance | Easy | To Do | To Do | To Do | To Do |
691 | Stickers to Spell Word | Hard | To Do | To Do | To Do | To Do |
692 | Top K Frequent Words | Medium | To Do | To Do | To Do | To Do |
693 | Binary Number with Alternating Bits | Easy | To Do | To Do | To Do | To Do |
694 | Number of Distinct Islands 🔒 | Medium | To Do | To Do | To Do | To Do |
695 | Max Area of Island | Easy | To Do | To Do | To Do | To Do |
696 | Count Binary Substrings | Easy | To Do | To Do | To Do | To Do |
697 | Degree of an Array | Easy | To Do | To Do | To Do | To Do |
698 | Partition to K Equal Sum Subsets | Medium | To Do | To Do | To Do | To Do |
699 | Falling Squares | Hard | To Do | To Do | To Do | To Do |
711 | Number of Distinct Islands II 🔒 | Hard | To Do | To Do | To Do | To Do |
712 | Minimum ASCII Delete Sum for Two Strings | Medium | To Do | To Do | To Do | To Do |
713 | Subarray Product Less Than K | Medium | To Do | To Do | To Do | To Do |
714 | Best Time to Buy and Sell Stock with Transaction Fee | Medium | To Do | To Do | To Do | To Do |
715 | Range Module | Hard | To Do | To Do | To Do | To Do |
716 | Max Stack 🔒 | Hard | To Do | To Do | To Do | To Do |
717 | 1-bit and 2-bit Characters | Easy | To Do | To Do | To Do | To Do |
718 | Maximum Length of Repeated Subarray | Medium | To Do | To Do | To Do | To Do |
719 | Find K-th Smallest Pair Distance | Hard | To Do | To Do | To Do | To Do |
720 | Longest Word in Dictionary | Easy | To Do | To Do | To Do | To Do |
721 | Accounts Merge | Medium | To Do | To Do | To Do | To Do |
722 | Remove Comments | Medium | To Do | To Do | To Do | To Do |
723 | Candy Crush 🔒 | Medium | To Do | To Do | To Do | To Do |
724 | Find Pivot Index | Easy | To Do | To Do | To Do | To Do |
725 | Split Linked List in Parts | Medium | To Do | To Do | To Do | To Do |
726 | Number of Atoms | Hard | To Do | To Do | To Do | To Do |
727 | Minimum Window Subsequence 🔒 | Hard | To Do | To Do | To Do | To Do |
728 | Self Dividing Numbers | Easy | To Do | To Do | To Do | To Do |
729 | My Calendar I | Medium | To Do | To Do | To Do | To Do |
730 | Count Different Palindromic Subsequences | Hard | To Do | To Do | To Do | To Do |
731 | My Calendar II | Medium | To Do | To Do | To Do | To Do |
732 | My Calendar III | Hard | To Do | To Do | To Do | To Do |
733 | Flood Fill | Easy | To Do | To Do | To Do | To Do |
734 | Sentence Similarity 🔒 | Easy | To Do | To Do | To Do | To Do |
735 | Asteroid Collision | Medium | To Do | To Do | To Do | To Do |
736 | Parse Lisp Expression | Hard | To Do | To Do | To Do | To Do |
737 | Sentence Similarity II 🔒 | Medium | To Do | To Do | To Do | To Do |
738 | Monotone Increasing Digits | Medium | To Do | To Do | To Do | To Do |
739 | Daily Temperatures | Medium | To Do | To Do | To Do | To Do |
740 | Delete and Earn | Medium | To Do | To Do | To Do | To Do |
741 | Cherry Pickup | Hard | To Do | To Do | To Do | To Do |
742 | Closest Leaf in a Binary Tree 🔒 | Medium | To Do | To Do | To Do | To Do |
743 | Network Delay Time | Medium | To Do | To Do | To Do | To Do |
744 | Find Smallest Letter Greater Than Target | Easy | To Do | To Do | To Do | To Do |
745 | Prefix and Suffix Search | Hard | To Do | To Do | To Do | To Do |
746 | Min Cost Climbing Stairs | Easy | To Do | To Do | To Do | To Do |
747 | Largest Number At Least Twice of Others | Easy | To Do | To Do | To Do | To Do |
748 | Shortest Completing Word | Medium | To Do | To Do | To Do | To Do |
749 | Contain Virus | Hard | To Do | To Do | To Do | To Do |
750 | Number Of Corner Rectangles 🔒 | Medium | To Do | To Do | To Do | To Do |
751 | IP to CIDR 🔒 | Easy | To Do | To Do | To Do | To Do |
752 | Open the Lock | Medium | To Do | To Do | To Do | To Do |
753 | Cracking the Safe | Hard | To Do | To Do | To Do | To Do |
754 | Reach a Number | Medium | To Do | To Do | To Do | To Do |
755 | Pour Water 🔒 | Medium | To Do | To Do | To Do | To Do |
756 | Pyramid Transition Matrix | Medium | To Do | To Do | To Do | To Do |
757 | Set Intersection Size At Least Two | Hard | To Do | To Do | To Do | To Do |
758 | Bold Words in String 🔒 | Easy | To Do | To Do | To Do | To Do |
759 | Employee Free Time 🔒 | Hard | To Do | To Do | To Do | To Do |
760 | Find Anagram Mappings 🔒 | Easy | To Do | To Do | To Do | To Do |
761 | Special Binary String | Hard | To Do | To Do | To Do | To Do |
762 | Prime Number of Set Bits in Binary Representation | Easy | To Do | To Do | To Do | To Do |
763 | Partition Labels | Medium | To Do | To Do | To Do | To Do |
764 | Largest Plus Sign | Medium | To Do | To Do | To Do | To Do |
765 | Couples Holding Hands | Hard | To Do | To Do | To Do | To Do |
766 | Toeplitz Matrix | Easy | To Do | To Do | To Do | To Do |
767 | Reorganize String | Medium | To Do | To Do | To Do | To Do |
768 | Max Chunks To Make Sorted II | Hard | To Do | To Do | To Do | To Do |
769 | Max Chunks To Make Sorted | Medium | To Do | To Do | To Do | To Do |
770 | Basic Calculator IV | Hard | To Do | To Do | To Do | To Do |
771 | Jewels and Stones | Easy | To Do | To Do | To Do | To Do |
772 | Basic Calculator III 🔒 | Hard | To Do | To Do | To Do | To Do |
773 | Sliding Puzzle | Hard | To Do | To Do | To Do | To Do |
774 | Minimize Max Distance to Gas Station 🔒 | Hard | To Do | To Do | To Do | To Do |
775 | Global and Local Inversions | Medium | To Do | To Do | To Do | To Do |
776 | Split BST 🔒 | Medium | To Do | To Do | To Do | To Do |
777 | Swap Adjacent in LR String | Medium | To Do | To Do | To Do | To Do |
778 | Swim in Rising Water | Hard | To Do | To Do | To Do | To Do |
779 | K-th Symbol in Grammar | Medium | To Do | To Do | To Do | To Do |
780 | Reaching Points | Hard | To Do | To Do | To Do | To Do |
781 | Rabbits in Forest | Medium | To Do | To Do | To Do | To Do |
782 | Transform to Chessboard | Hard | To Do | To Do | To Do | To Do |
783 | Minimum Distance Between BST Nodes | Easy | To Do | To Do | To Do | To Do |
784 | Letter Case Permutation | Easy | To Do | To Do | To Do | To Do |
785 | Is Graph Bipartite? | Medium | To Do | To Do | To Do | To Do |
786 | K-th Smallest Prime Fraction | Hard | To Do | To Do | To Do | To Do |
787 | Cheapest Flights Within K Stops | Medium | To Do | To Do | To Do | To Do |
788 | Rotated Digits | Easy | To Do | To Do | To Do | To Do |
789 | Escape The Ghosts | Medium | To Do | To Do | To Do | To Do |
790 | Domino and Tromino Tiling | Medium | To Do | To Do | To Do | To Do |
791 | Custom Sort String | Medium | To Do | To Do | To Do | To Do |
792 | Number of Matching Subsequences | Medium | To Do | To Do | To Do | To Do |
793 | Preimage Size of Factorial Zeroes Function | Hard | To Do | To Do | To Do | To Do |
794 | Valid Tic-Tac-Toe State | Medium | To Do | To Do | To Do | To Do |
795 | Number of Subarrays with Bounded Maximum | Medium | To Do | To Do | To Do | To Do |
796 | Rotate String | Easy | To Do | To Do | To Do | To Do |
797 | All Paths From Source to Target | Medium | To Do | To Do | To Do | To Do |
798 | Smallest Rotation with Highest Score | Hard | To Do | To Do | To Do | To Do |
799 | Champagne Tower | Medium | To Do | To Do | To Do | To Do |