Reverse String

JUNIOR

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Write a function that reverses a string. The input string is given as an array of characters.

You must do this by modifying the input array in-place.

Example:

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

Input 1:{"s":["h","e","l","l","o"]}

Output 1:["o","l","l","e","h"]

Input 2:{"s":["H","a","n","n","a","h"]}

Output 2:["h","a","n","n","a","H"]

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