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Solution: Reverse String

Explore how to reverse a character array in-place using the two pointers technique. This lesson helps you understand swapping characters from opposite ends until the array is reversed, optimizing for O(n) time and O(1) space complexity. You will gain hands-on insight into solving string reversal problems efficiently without additional memory.

Statement

You are given a character array, s, representing a string. Write a function that reverses the array in-place.

  • The reversal must be done by modifying the original array directly.

  • You cannot use extra memory beyond a constant amount O(1)O(1) ...