ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link 394,Decode String,50.0%,Medium,0.06713782998723788, https://leetcode.com/problems/decode-string 346,Moving Average from Data Stream,70.9%,Easy,0.03932354620391436, https://leetcode.com/problems/moving-average-from-data-stream 200,Number of Islands,46.8%,Medium,0.011509262420590827, https://leetcode.com/problems/number-of-islands 221,Maximal Square,37.7%,Medium,0.00988638798855515, https://leetcode.com/problems/maximal-square 380,Insert Delete GetRandom O(1),47.5%,Medium,0.009820849864094454, https://leetcode.com/problems/insert-delete-getrandom-o1 124,Binary Tree Maximum Path Sum,34.3%,Hard,0.005531752454833179, https://leetcode.com/problems/binary-tree-maximum-path-sum 5,Longest Palindromic Substring,29.5%,Medium,0.002279333142507479, https://leetcode.com/problems/longest-palindromic-substring 340,Longest Substring with At Most K Distinct Characters,44.1%,Hard,0, https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters