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Problem 13: The String Reverser (Reverse String Recursively)

Problem Statement

Write a function that reverses a string using recursion. The input string is given as an array of characters s. You must do this by modifying the input array in-place with O(1) extra memory.

Input Format

  • An array of characters s.

Example

Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]