2471. Minimum Number of Operations to Sort a Binary Tree by Level | Arrays & Tree
26:05
3398, 3399. Smallest Substring With Identical Characters I & II | 3398 I | Binary Search | !Greedy
29:01
2940. Find Building Where Alice and Bob Can Meet | Monotonic stack | Priority Queue
11:14
3397. Maximum Number of Distinct Elements After Operations | Greedy
17:38
2872. Maximum Number of K-Divisible Components | Topological Sort | BFS | Graphs
23:45
LeetCode | 2563. Count the Number of Fair Pairs | Two Pointer | Sorting
14:09
769. Max Chunks To Make Sorted | Prefix Sums | Multiple Approaches
23:13
3377. Digit Operations to Make Two Integers Equal | Dijkstras | Prime Sieve | Graph + Math
22:30