jamerrq/LeetCode-75

Ace Coding Interview with 75 Qs

LeetCode 75

Ace Coding Interview with 75 Qs

My solutions to the 75 LeetCode track. I will be adding more as I solve them.

Explore the challenge: https://leetcode.com/studyplan/leetcode-75/

Array/String (9/9)

• 1768. Merge Strings Alternately
• 1071. Greatest Common Divisor of Strings
• 1431. Kids With the Greatest Number of Candies
• 605. Can Place Flowers
• 345. Reverse Vowels of a String
• 151. Reverse Words in a String
• 238. Product of Array Except Self
• 334. Increasing Triplet Subsequence
• 443. String Compression

Two Pointers (4/4)

• 283. Move Zeroes
• 392. Is Subsequence
• 11. Container With Most Water
• 1679. Max Number of K-Sum Pairs

Sliding Window (4/4)

• 643. Maximum Average Subarray I
• 1456. Maximum Number of Vowels in a Substring of Given Length
• 1004. Max Consecutive Ones III
• 1493. Longest Subarray of 1's After Deleting One Element

Prefix Sum (2/2)

• 1732. Find the Highest Altitude
• 724. Find Pivot Index

Hash Map / Set (4/4)

• 2215. Find the Difference of Two Arrays
• 1207. Unique Number of Occurrences
• 1657. Determine if Two Strings Are Close
• 2352. Equal Row and Column Pairs

Stack (3/3)

• 2390. Removing Stars From a String
• 735. Asteroid Collision
• 394. Decode String

Queue (2/2)

• 933. Number of Recent Calls
• 649. Dota2 Senate

Linked List (4/4)

• 2095. Delete the Middle Node of a Linked List
• 328. Odd Even Linked List
• 206. Reverse Linked List
• 2130. Maximum Twin Sum of a Linked List

Binary Tree - DFS (6/6)

• 104. Maximum Depth of Binary Tree
• 872. Leaf-Similar Trees
• 1448. Count Good Nodes in Binary Tree
• 437. Path Sum III
• 1372. Longest ZigZag Path in a Binary Tree
• 236. Lowest Common Ancestor of a Binary Tree

Binary Tree - BFS (2/2)

• 199. Binary Tree Right Side View
• 1161. Maximum Level Sum of a Binary Tree

Binary Search Tree (1/2)

• 700. Search in a Binary Search Tree

Graphs - DFS (2/4)

• 841. Keys and Rooms
• 547. Number of Provinces

Heap/Priority Queue (2/4)

• 215. Kth Largest Element in an Array
• 2336. Smallest Number in Infinite Set

Binary Search (4/4)

• 374. Guess Number Higher or Lower
• 2300. Successful Pairs of Spells and Potions
• 162. Find Peak Element
• 875. Koko Eating Bananas

Backtracking (2/2)

• 17. Letter Combinations of a Phone Number
• 216. Combination Sum III

DP - 1D (4/4)

• 1137. N-th Tribonacci Number
• 746. Min Cost Climbing Stairs
• 198. House Robber
• 790. Domino and Tromino Tiling

DP - Multidimensional (4/4)

• 62. Unique Paths
• 1143. Longest Common Subsequence
• 714. Best Time to Buy and Sell Stock with Transaction Fee
• 72. Edit Distance

Bit Manipulation (3/3)

• 338. Counting Bits
• 136. Single Number
• 1318. Minimum Flips to Make a OR b Equal to c

Trie (2/2)

• 208. Implement Trie (Prefix Tree)
• 1268. Search Suggestions System

Intervals (1/2)

• 435. Non-overlapping Intervals
• 452. Minimum Number of Arrows to Burst Balloons

Monotonic Stack (2/2)

• 739. Daily Temperatures
• 901. Online Stock Span

Some Resources 📕

• Python: Working with the bin() Method
• heapq — Heap queue algorithm