ID,Title,Acceptance,Difficulty,Frequency,Leetcode Question Link 558,Logical OR of Two Binary Grids Represented as Quad-Trees,44.6%,Medium,1.302238508997728, https://leetcode.com/problems/logical-or-of-two-binary-grids-represented-as-quad-trees 981,Time Based Key-Value Store,53.1%,Medium,0.8180951326968029, https://leetcode.com/problems/time-based-key-value-store 850,Rectangle Area II,47.5%,Hard,0.33395175639587793, https://leetcode.com/problems/rectangle-area-ii 31,Next Permutation,32.6%,Medium,0.19579797845713617, https://leetcode.com/problems/next-permutation 990,Satisfiability of Equality Equations,45.0%,Medium,0.14565275315686743, https://leetcode.com/problems/satisfiability-of-equality-equations 56,Merge Intervals,39.3%,Medium,0.013819532422258866, https://leetcode.com/problems/merge-intervals 200,Number of Islands,46.8%,Medium,0.006490251382779317, https://leetcode.com/problems/number-of-islands