leetcode-patterns

Leetcode problems categorized by patterns.

Patterns

1. Sliding window
2. Tow pointers
3. Fast slow pointers
4. Merge intervals
5. Cyclic sort
6. In place reversal of a linked list
7. BFS
8. DFS
9. Two heaps
10. Subsets
11. Binary search
12. Bitwise XOR
13. Top K elements
14. K-way merge
15. Dynamic programming
16. Topological sort
17. Divide and conquer

If a file has a non-zero prefix file name, that means the problem can be found on Leetcode, there should be a link in the comment to link to Leetcode. If the problems can be found on Leetcode, then the solution inside is already validated against Leetcode (expect the ones require subscription). Files prefixed by 0 can not be found on Leetcode.

Acknowledgement

• Grokking the Coding Interview from Educative.io.
• labuladong 的算法小抄 (Chinese language)