Title Acceptance Level Move Zeroes 57.8% Easy Roman to Integer 55.7% Easy First Unique Character in a String 53.4% Easy Missing Number 51.7% Easy Best Time to Buy and Sell Stock 50.5% Easy Maximum Subarray 46.5% Easy Two Sum 45.6% Easy Bulls and Cows 42.4% Easy String Compression 41.3% Easy Path Sum 41.2% Easy Valid Parentheses 39.0% Easy Design Hit Counter 63.7% Medium Daily Temperatures 63.3% Medium Max Area of Island 62.7% Medium Game of Life 54.5% Medium Time Based Key-Value Store 53.1% Medium Serialize and Deserialize BST 52.0% Medium Path Sum III 47.2% Medium Path Sum II 46.7% Medium Lowest Common Ancestor of a Binary Tree 45.7% Medium Inorder Successor in BST 40.4% Medium Word Break 40.1% Medium Evaluate Reverse Polish Notation 36.3% Medium Word Search 35.6% Medium Search in Rotated Sorted Array 34.5% Medium Design Snake Game 34.2% Medium Multiply Strings 33.9% Medium LRU Cache 33.2% Medium Longest Substring Without Repeating Characters 30.4% Medium Word Ladder 29.6% Medium Reverse Words in a String 21.9% Medium String to Integer (atoi) 15.4% Medium Merge k Sorted Lists 40.2% Hard Word Search II 34.9% Hard Word Break II 32.6% Hard Median of Two Sorted Arrays 29.6% Hard Integer to English Words 27.1% Hard