759,Employee Free Time,66.3%,Hard,0.03854298223800189, https://leetcode.com/problems/employee-free-time 1296,Divide Array in Sets of K Consecutive Numbers,53.8%,Medium,0.023832950586679065, https://leetcode.com/problems/divide-array-in-sets-of-k-consecutive-numbers 114,Flatten Binary Tree to Linked List,49.3%,Medium,0.018398560423425723, https://leetcode.com/problems/flatten-binary-tree-to-linked-list 79,Word Search,35.6%,Medium,0.003688528772102895, https://leetcode.com/problems/word-search 56,Merge Intervals,39.3%,Medium,0.0033129067901687907, https://leetcode.com/problems/merge-intervals 3,Longest Substring Without Repeating Characters,30.4%,Medium,0.0014852223137141987, https://leetcode.com/problems/longest-substring-without-repeating-characters