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+# Day 1 - Two Pointers
+
+# Day 1 - Two Pointers
+
+_Source PDF: `Day1-2pointers.pdf`_
+
+## Checklist
+
+- [ ] [26. Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array/)
+- [ ] [167. Two Sum II - Input Array Is Sorted](https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/)
+- [ ] [283. Move Zeroes](https://leetcode.com/problems/move-zeroes/)
+- [ ] [344. Reverse String](https://leetcode.com/problems/reverse-string/)
+- [ ] [11. Container With Most Water](https://leetcode.com/problems/container-with-most-water/)
+- [ ] [125. Valid Palindrome](https://leetcode.com/problems/valid-palindrome/)
+- [ ] [977. Squares of a Sorted Array](https://leetcode.com/problems/squares-of-a-sorted-array/)
+- [ ] [713. Subarray Product Less Than K](https://leetcode.com/problems/subarray-product-less-than-k/)
+- [ ] [27. Remove Element](https://leetcode.com/problems/remove-element/)
+- [ ] [15. 3Sum](https://leetcode.com/problems/3sum/)
+- [ ] [75. Sort Colors (Dutch National Flag Problem)](https://leetcode.com/problems/sort-colors/)
+- [ ] [3. Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/)
+- [ ] [209. Minimum Size Subarray Sum](https://leetcode.com/problems/minimum-size-subarray-sum/)
+- [ ] [42. Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water/)
+- [ ] [845. Longest Mountain in Array](https://leetcode.com/problems/longest-mountain-in-array/)
+
+## How to submit
+
+1. Work on this PR branch.
+2. Add solutions under `solutions/day-1/`.
+3. Check off items above as you finish.
+4. Push commits to **this PR** (not a new PR).
+
+## Tag the bot
+
+Comment `@shubhammms` for a nudge.
+
+
+---
+_Opened by Alakh Clawbot (@shubhammms) on 2026-07-17._