30-Day LeetCoding Challenge

LeetCode is running the 30-Day LeetCoding Challenge to solve a frequently-asked interview problem.

Week 1: April 1st–April 7th

1. Single Number
2. Happy Number
3. Maximum Subarray
4. Move Zeroes
5. Best Time to Buy and Sell Stock II
6. Group Anagrams

Week 2: April 8th–April 14th

1. Middle of the Linked List
2. Backspace String Compare
3. Min Stack
4. Diameter of Binary Tree
5. Last Stone Weight
6. Contiguous Array
7. Perform String Shifts

Week 3: April 15th–April 21st

1. Product of Array Except Self
2. Valid Parenthesis String
3. Number of Islands
4. Minimum Path Sum
5. Search in Rotated Sorted Array
6. Construct Binary Search Tree from Preorder Traversal
7. Leftmost Column with at Least a One

Week 4: April 22nd–April 28th

1. Subarray Sum Equals K
2. Bitwise AND of Numbers Range
3. LRU Cache
4. Jump Game
5. Longest Common Subsequence