Title Acceptance Level Squares of a Sorted Array 72.1% Easy Reverse Words in a String III 69.8% Easy Remove All Adjacent Duplicates In String 68.6% Easy Reverse String 68.5% Easy Middle of the Linked List 68.4% Easy Maximum Depth of Binary Tree 66.0% Easy Reverse Linked List 62.5% Easy Shortest Word Distance 61.0% Easy Move Zeroes 57.8% Easy Valid Anagram 56.9% Easy Two Sum II - Input array is sorted 54.1% Easy Merge Two Sorted Lists 53.5% Easy Best Time to Buy and Sell Stock 50.5% Easy Maximum Subarray 46.5% Easy Two Sum 45.6% Easy Valid Parentheses 39.0% Easy Remove Linked List Elements 38.6% Easy Rotate Array 34.7% Easy Implement strStr() 34.5% Easy K-diff Pairs in an Array 31.6% Easy K Closest Points to Origin 63.8% Medium Permutations 63.5% Medium Product of Array Except Self 60.1% Medium Integer to Roman 55.1% Medium Binary Tree Right Side View 54.1% Medium Meeting Scheduler 52.7% Medium Robot Bounded In Circle 49.6% Medium Maximum Number of Occurrences of a Substring 47.3% Medium Sort Colors 47.3% Medium Number of Islands 46.8% Medium Lowest Common Ancestor of a Binary Tree 45.7% Medium Meeting Rooms II 45.7% Medium Partition Equal Subset Sum 43.7% Medium Search a 2D Matrix II 43.2% Medium Course Schedule 43.1% Medium Set Matrix Zeroes 43.1% Medium Check If Array Pairs Are Divisible by k 41.1% Medium Asteroid Collision 41.0% Medium Merge Intervals 39.3% Medium Gas Station 38.5% Medium Basic Calculator II 36.9% Medium Remove Duplicates from Sorted List II 36.8% Medium ZigZag Conversion 36.3% Medium Coin Change 35.5% Medium Search in Rotated Sorted Array 34.5% Medium Spiral Matrix 34.1% Medium Add Two Numbers 33.9% Medium LRU Cache 33.2% Medium Longest Substring Without Repeating Characters 30.4% Medium Wiggle Sort II 29.9% Medium Longest Palindromic Substring 29.5% Medium 3Sum 26.8% Medium Paint House III 48.1% Hard Longest Consecutive Sequence 45.1% Hard Edit Distance 44.8% Hard Reverse Nodes in k-Group 42.1% Hard Basic Calculator 36.8% Hard Text Justification 27.7% Hard Integer to English Words 27.1% Hard