593,Valid Square,43.1%,Medium,0.8850660255420153, https://leetcode.com/problems/valid-square 647,Palindromic Substrings,60.6%,Medium,0.5969293308834104, https://leetcode.com/problems/palindromic-substrings 203,Remove Linked List Elements,38.6%,Easy,0.30879263622480546, https://leetcode.com/problems/remove-linked-list-elements 730,Count Different Palindromic Subsequences,41.8%,Hard,0.26866680633829343, https://leetcode.com/problems/count-different-palindromic-subsequences 716,Max Stack,42.6%,Easy,0.04103139667786253, https://leetcode.com/problems/max-stack 75,Sort Colors,47.3%,Medium,0.02953900967923939, https://leetcode.com/problems/sort-colors 155,Min Stack,44.5%,Easy,0.010200700488022775, https://leetcode.com/problems/min-stack 380,Insert Delete GetRandom O(1),47.5%,Medium,0.00934149716911291, https://leetcode.com/problems/insert-delete-getrandom-o1 202,Happy Number,50.4%,Easy,0.0059889383976452016, https://leetcode.com/problems/happy-number 167,Two Sum II - Input array is sorted,54.1%,Easy,0.005280540323033287, https://leetcode.com/problems/two-sum-ii-input-array-is-sorted 5,Longest Palindromic Substring,29.5%,Medium,0.0048918458243339055, https://leetcode.com/problems/longest-palindromic-substring