> For the complete documentation index, see [llms.txt](https://protegejj.gitbook.io/oj-practices/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers.md).

# Two Pointers

- [3 Longest Substring Without Repeating Characters](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/3-longest-substring-without-repeating-characters.md)
- [11 Container With Most Water](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/11-container-with-most-water.md)
- [15 3Sum](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/15-3sum.md)
- [16     3Sum Closest](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/16-3sum-closest.md)
- [18     4Sum](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/18-4sum.md)
- [26     Remove Duplicates from Sorted Array](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/26-remove-duplicates-from-sorted-array.md)
- [27     Remove Element](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/27-removeelement.md)
- [30     Substring with Concatenation of All Words](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/30-substring-with-concatenation-of-all-words.md)
- [42     Trapping Rain Water](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/42-trapping-rain-water.md)
- [76 Minimum Window Substring](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/76-minimum-window-substring.md)
- [80     Remove Duplicates from Sorted Array II](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/80-remove-duplicates-from-sorted-array-ii.md)
- [88     Merge Sorted Array](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/88-merge-sorted-array.md)
- [125     Valid Palindrome](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/125-valid-palindrome.md)
- [159     Longest Substring with At Most Two Distinct Characters](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/159-longest-substring-with-atmost-two-distinct-characters.md)
- [167     Two Sum II - Input array is sorted](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/167-two-sum-ii-input-array-is-sorted.md)
- [202     Happy Number](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/202-happy-number.md)
- [209     Minimum Size Subarray Sum](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/209-minimum-size-subarray-sum.md)
- [259     3Sum Smaller](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/259-3sum-smaller.md)
- [283     Move Zeroes](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/283-move-zeroes.md)
- [287     Find the Duplicate Number](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/287-find-the-duplicate-number.md)
- [340     Longest Substring with At Most K Distinct Characters](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/340-longest-substring-with-atmost-k-distinct-characters.md)
- [344     Reverse String](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/344-reverse-string.md)
- [345     Reverse Vowels of a String](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/345-reverse-vowels-of-a-string.md)
- [349     Intersection of Two Arrays](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/349-intersection-of-two-arrays.md)
- [350     Intersection of Two Arrays II](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/350-intersection-of-two-arrays-ii.md)
- [360     Sort Transformed Array](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/360-sort-transformed-array.md)
- [395     Longest Substring with At Least K Repeating Characters](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/395-longest-substring-with-atleast-k-repeating-characters.md)
- [424     Longest Repeating Character Replacement](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/424-longest-repeating-character-replacement.md)
- [438     Find All Anagrams in a String](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/438-find-all-anagrams-in-a-string.md)
- [487     Max Consecutive Ones II](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/487-max-consecutive-ones-ii.md)
- [524     Longest Word in Dictionary through Deleting](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/524-longest-word-in-dictionary-through-deleting.md)
- [532     K-diff Pairs in an Array](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/532-k-diff-pairs-in-an-array.md)
- [567     Permutation in String](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/567-permutation-in-string.md)
- [611     Valid Triangle Number](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/611-valid-triangle-number.md)
- [632     Smallest Range](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/632-smallest-range.md)
- [713     Subarray Product Less Than K](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/713-subarray-product-less-than-k.md)
- [723     Candy Crush](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/723-candy-crush.md)
- [763     Partition Labels](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/763-partition-labels.md)
- [826 Most Profit Assigning Work](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/826-most-profit-assigning-work.md)
- [828 Unique Letter String](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/828-unique-letter-string.md)
- [838     Push Dominoes](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/838-push-dominoes.md)
- [844     Backspace String Compare](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/844-backspace-string-compare.md)
- [845     Longest Mountain in Array](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/845-longest-mountain-in-array.md)
- [881     Boats to Save People](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/881-boats-to-save-people.md)
- [904     Fruit Into Baskets](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/904-fruit-into-baskets.md)
- [457 Circular Array Loop](https://protegejj.gitbook.io/oj-practices/chapter1/two-pointers/457-circular-array-loop.md)


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