- Grep
fasterorTODOfor those problem that I didn't achieve 100% time or has something else to do. - Review and filter the list of interesting problems.
- To other people, most of the code here is ugly, especially for those uninteresting problems to me.
355 - Design Twitter: cool data structure problems, can be followed up with many system design topics for real life implementation.
866 - Prime Palindrome, see also my benchmark on the fastest solutions for it
1143 - Longest Common Subsequence: classic DP problem
Following problem use almost same DP algorithms, which is described:
- Coin change
- Coin change 2
- Combination Sum IV
Longest increasing subsequence
- Longest Increasing Subsequence