Reverse String

Easy

String

Time Limit: 1000ms

Memory Limit: 128MB

Problem Description

Write a function that reverses a string. 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.

Constraints

Do not allocate extra space for another array
You must do this by modifying the input array in-place with O(1) extra memory
1 <= s.length <= 10^5
s[i] is a printable ASCII character

Input

{"s": "hello"}

Output

["o","l","l","e","h"]

Available Test Cases:5 test cases

Test Case 1Sample

Input: {"s": "hello"}

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

Test Case 2Sample

Input: {"s": "Hannah"}

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

⚠️ Hidden test case

Test Case 3Sample

Input: {"s": "a"}

Expected Output: ["a"]

⚠️ Hidden test case

Test Case 4Sample

Input: {"s": "abcdef"}

Expected Output: ["f","e","d","c","b","a"]

⚠️ Hidden test case

Test Case 5Sample

Input: {"s": "racecar"}

Expected Output: ["r","a","c","e","c","a","r"]

⚠️ Hidden test case