Matrix

Rotate Image: https://www.youtube.com/watch?v=SA867FvqHrM

Heaps

Last Stone Weight: https://www.youtube.com/watch?v=fBPS7PtPtaE

Graphs

Clone Graph: https://www.geeksforgeeks.org/clone-an-undirected-graph/

Num of Islands: https://www.youtube.com/watch?v=o8S2bO3pmO4

Word Search: https://www.youtube.com/watch?v=vYYNp0Jrdv0

Dynamic Programming

Climbing Stairs: https://www.youtube.com/watch?v=kulWKd3BUcI

Coin Change: https://www.youtube.com/watch?v=1R0_7HqNaW0&t=533s

Unique Paths: https://www.youtube.com/watch?v=6qMFjFC9YSc

Decode Ways: https://www.youtube.com/watch?v=cQX3yHS0cLo

Jump Game: https://www.youtube.com/watch?v=i4F5TnTLAbc

LCA BST

https://www.youtube.com/watch?v=kulWKd3BUcI

Kth Smallest BST

https://www.youtube.com/watch?v=C6r1fDKAW_o

IsValid BST

https://www.youtube.com/watch?v=MILxfAbIhrE