ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link 441,Arranging Coins,41.9%,Easy,0.08973851726005694, https://leetcode.com/problems/arranging-coins 146,LRU Cache,33.2%,Medium,0.07118067822062889, https://leetcode.com/problems/lru-cache 20,Valid Parentheses,39.0%,Easy,0.055983722381420686, https://leetcode.com/problems/valid-parentheses 1,Two Sum,45.6%,Easy,0.051207090852741735, https://leetcode.com/problems/two-sum 253,Meeting Rooms II,45.7%,Medium,0.04945628059066218, https://leetcode.com/problems/meeting-rooms-ii 724,Find Pivot Index,44.0%,Easy,0.03089844155123413, https://leetcode.com/problems/find-pivot-index 63,Unique Paths II,34.6%,Medium,0.01949801804099658, https://leetcode.com/problems/unique-paths-ii 139,Word Break,40.1%,Medium,0.015487677691351377, https://leetcode.com/problems/word-break 5,Longest Palindromic Substring,29.5%,Medium,0.01416133329402493, https://leetcode.com/problems/longest-palindromic-substring 56,Merge Intervals,39.3%,Medium,0.013819532422258866, https://leetcode.com/problems/merge-intervals 344,Reverse String,68.5%,Easy,0.013014662307854044, https://leetcode.com/problems/reverse-string 200,Number of Islands,46.8%,Medium,0.011509262420590827, https://leetcode.com/problems/number-of-islands 279,Perfect Squares,47.4%,Medium,0.009216655104924008, https://leetcode.com/problems/perfect-squares 76,Minimum Window Substring,34.6%,Hard,0.006231520398723243, https://leetcode.com/problems/minimum-window-substring 46,Permutations,63.5%,Medium,0.004216302230139218, https://leetcode.com/problems/permutations 4,Median of Two Sorted Arrays,29.6%,Hard,0.003900160950094767, https://leetcode.com/problems/median-of-two-sorted-arrays 443,String Compression,41.3%,Easy,0, https://leetcode.com/problems/string-compression