> For the complete documentation index, see [llms.txt](https://code-render.gitbook.io/leetcode-editorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://code-render.gitbook.io/leetcode-editorials/09-september.md).

# 09-September

- [01. Counting Bits](https://code-render.gitbook.io/leetcode-editorials/09-september/01.counting-bits.md)
- [02. Extra Characters in a String](https://code-render.gitbook.io/leetcode-editorials/09-september/02.extra-characters-in-a-string.md)
- [03. Unique Paths](https://code-render.gitbook.io/leetcode-editorials/09-september/03.unique-paths.md)
- [04. Linked List Cycle](https://code-render.gitbook.io/leetcode-editorials/09-september/04-linked-list-cycle.md)
- [05. Copy List with Random Pointer](https://code-render.gitbook.io/leetcode-editorials/09-september/05-copy-list-with-random-pointer.md)
- [06. Split Linked List in Parts](https://code-render.gitbook.io/leetcode-editorials/09-september/06-split-linked-list-in-parts.md)
- [07. Reverse Linked List II](https://code-render.gitbook.io/leetcode-editorials/09-september/07-reverse-linked-list-ii.md)
- [08. Pascal's Triangle](https://code-render.gitbook.io/leetcode-editorials/09-september/08-pascals-triangle.md)
- [09. Combination Sum IV](https://code-render.gitbook.io/leetcode-editorials/09-september/09-combination-sum-iv.md)
- [10. Count All Valid Pickup and Delivery Options](https://code-render.gitbook.io/leetcode-editorials/09-september/10-count-all-valid-pickup-and-delivery-options.md)
- [11. Group the People Given the Group Size They Belong To](https://code-render.gitbook.io/leetcode-editorials/09-september/11-group-the-people-given-the-group-size-they-belong-to.md)
- [12. Minimum Deletions to Make Character Frequencies Unique](https://code-render.gitbook.io/leetcode-editorials/09-september/12-minimum-deletions-to-make-character-frequencies-unique.md)
- [13. Candy](https://code-render.gitbook.io/leetcode-editorials/09-september/13-candy.md)
- [14. Reconstruct Itinerary](https://code-render.gitbook.io/leetcode-editorials/09-september/14-reconstruct-itinerary.md)
- [15. Min Cost to Connect All Points](https://code-render.gitbook.io/leetcode-editorials/09-september/15-min-cost-to-connect-all-points.md)
- [16. Path With Minimum Effort](https://code-render.gitbook.io/leetcode-editorials/09-september/16-path-with-minimum-effort.md)
- [17. Shortest Path Visiting All Nodes](https://code-render.gitbook.io/leetcode-editorials/09-september/17-shortest-path-visiting-all-nodes.md)
- [18. The K Weakest Rows in a Matrix](https://code-render.gitbook.io/leetcode-editorials/09-september/18-the-k-weakest-rows-in-a-matrix.md)
- [19. Find the Duplicate Number](https://code-render.gitbook.io/leetcode-editorials/09-september/19-find-the-duplicate-number.md)
- [20. Minimum Operations to Reduce X to Zero](https://code-render.gitbook.io/leetcode-editorials/09-september/20-minimum-operations-to-reduce-x-to-zero.md)
- [21-Median of Two Sorted Arrays](https://code-render.gitbook.io/leetcode-editorials/09-september/21-median-of-two-sorted-array.md)
- [22- Is Subsequence](https://code-render.gitbook.io/leetcode-editorials/09-september/22-is-subsequence.md)
- [23- Longest String Chain](https://code-render.gitbook.io/leetcode-editorials/09-september/23-longest-string-chain.md)
- [24- Champagne Tower](https://code-render.gitbook.io/leetcode-editorials/09-september/24-champagne-tower.md)
- [25- Find the Difference](https://code-render.gitbook.io/leetcode-editorials/09-september/25-find-the-difference.md)
- [26- Remove Duplicate Letters](https://code-render.gitbook.io/leetcode-editorials/09-september/26.remove-duplicate-letters.md)
- [27- Decoded String at Index](https://code-render.gitbook.io/leetcode-editorials/09-september/27.decoded-string-at-index.md)
- [28- Sort Array By Parity](https://code-render.gitbook.io/leetcode-editorials/09-september/28-sort-array-by-parity.md)
- [29- Monotonic Array](https://code-render.gitbook.io/leetcode-editorials/09-september/29-monotonic-array.md)
- [30- 132 Pattern](https://code-render.gitbook.io/leetcode-editorials/09-september/30-132-pattern.md)