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Two Pointers

Two indices walking with a rule — sorted arrays and partitions.

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  • Valid PalindromeEasy
  • Container With Most WaterMedium
  • 3SumMedium
  • Remove Duplicates from Sorted ArrayEasy
  • Two Sum II (Sorted)Medium
  • Squares of a Sorted ArrayEasy
  • Trapping Rain WaterHard