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Problem: Reverse String

Explore how to reverse an array of characters in place using recursion with O(1) extra memory. Learn the recursive swapping technique that manipulates the array boundaries with left and right pointers. Understand the base case for recursion stopping when pointers meet or cross, and analyze the time and space complexities involved in this recursive approach.

Statement

Given an array of characters s, write a function to reverse the array in place.

The reversal must be performed by modifying the input array s directly, using only O(1)O(1) extra memory.

Note: Do not return a new array. Modify the input array s in place.

Constraints:

  • 11 \leq s.length 105\leq 10^5 ...