Microsoft

1 LRU Cache Medium 2 Same Tree Easy 3 Kth Smallest Element in a BST Medium 4 Kth Largest Element in a Stream Easy 5 Subsets Medium 6 Letter Combinations of a Phone Number Medium 7 Rotting Oranges Medium 8 Word Ladder Hard 9 Climbing Stairs Easy 10 Coin Change Medium 11 Best Time to Buy and Sell Stock with Cooldown Medium 12 Burst Balloons Hard 13 Merge Triplets to Form Target Triplet Medium 14 Meeting Rooms II Medium 15 Pow(x, n) Medium 16 Missing Number Easy 17 Top K Frequent Elements Medium 18 3Sum Medium 19 Minimum Window Substring Hard 20 Car Fleet Medium 21 Time Based Key-Value Store Medium 22 Add Two Numbers Medium 23 Maximum Depth of Binary Tree Easy 24 Binary Tree Right Side View Medium 25 Implement Trie (Prefix Tree) Medium 26 Task Scheduler Medium 27 Combination Sum II Medium 28 Max Area of Island Medium 29 Redundant Connection Medium 30 Swim in Rising Water Hard 31 Longest Palindromic Substring Medium 32 Partition Equal Subset Sum Medium 33 Longest Increasing Path in a Matrix Hard 34 Jump Game II Medium 35 Merge Intervals Medium 36 Set Matrix Zeroes Medium 37 Number of 1 Bits Easy 38 Valid Anagram Easy 39 Longest Consecutive Sequence Medium 40 Longest Substring Without Repeating Characters Medium