202. Happy Number
We can use Floyd’s cycle detection algorithm to solve this problem.
LeetCode
234. Palindrome Linked List
A good example that slowed how to make your code modular.
92. Reverse Linked List II
No summary
206. Reverse Linked List
This post explained each step of the solution.
876. Middle of the Linked List
No summary
19. Remove Nth Node From End of List
Drew some comments to visualize each step of the solution.
141. Linked List Cycle
Solving this problem with classic fast and slow pointers solution
259. 3Sum Smaller
No summary
Problems of Paint House
A problem set of Paint House problems.
Problems of Maximum&Minimum Depth of Binary Tree
A problem set of Depth of Binary Tree problems.