myleetcode # Title Solution Difficulty Times 917 Reverse Only Letters Java Easy 1 860 Lemonade Change Java Easy 2 692 Top K Frequent Words Java Medium 1 680 Valid Palindrome II Java Easy 1 633 Sum of Square Numbers Java Easy 1 621 Task Scheduler Java Medium 1 589 N Ary Tree Preorder Traversal Java Easy 1 557 Reverse Words In A String III Java Hard 1 547 Friend Circles Java Medium 1 541 Reverse String II Java Easy 1 524 Longest Word in Dictionary through Deleting Java Medium 1 438 Find All Anagrams In A String Java Medium 1 429 N Ary Tree Level Order Traversal Java Medium 1 406 Queue Reconstruction by Height Java Medium 1 387 First Unique Character In A String Java Easy 1 345 Reverse Vowels of a String Java Easy 1 300 Longest Increasing Subsequence Java Medium 1 283 Move Zeroes Java Easy 1 263 Ugly Number Java Easy 1 242 Valid Anagram Java Easy 1 236 Lowest Common Ancestor Of A Binary Tree Java Medium 1 221 Maximal Square Java Medium 1 215 Kth Largest Element in an Array Java Medium 1 208 Implement Trie Prefix Tree Java Medium 1 205 Isomorphic Strings Java Easy 1 200 Number Of Islands Java Medium 1 189 Rotate Array Java Easy 1 167 Two Sum II - Input array is sorted Java Easy 1 151 Reverse Words In A String Java Medium 1 144 Binary Tree Preorder Traversal Java Medium 1 141 Linked List Cycle Java Easy 1 130 Surrounded Regions Java Medium 1 115 Distinct Subsequences Java Hard 1 105 Construct Binary Tree From Preorder And Inorder Traversal Java Medium 1 94 Binary Tree Inorder Traversal Java Medium 1 91 Decode Ways Java Medium 1 88 Merge Sorted Array Java Easy 1 78 Subsets Java Medium 1 77 Combinations Java Medium 1 70 Combinations Java Easy 1 66 Plus One Java Easy 1 64 Minimum Path Sum Java Medium 1 52 N Queens II Java Hard 1 50 PowxN Java Medium 1 49 Group Anagrams Java Medium 1 47 Permutations-II Java Medium 1 46 Permutations Java Medium 2 44 Wildcard Matching Java Hard 1 36 Valid Sudoku Java Medium 1 32 Longest Valid Parentheses Java Hard 1 26 Remove Duplicates from Sorted Array Java Easy 1 22 Generate Parentheses Java Medium 1 21 Merge Two Sorted Lists Java Easy 1 11 Container With Most Water Java Easy 1 7 Reverse Integer Java Easy 1 5 Longest Palindromic Substring Java Medium 1 1 Two Sum Java Easy 1