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Problem: Reverse String

Explore how to reverse a string represented as an array in place using recursion in Python. Learn to implement a recursive helper function that swaps characters from the ends inward without extra array creation, managing space complexity effectively. Understand the process, base cases, and recursive calls to master in-place reversal using the recursion technique.

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 ...