#344. Reverse String

문제

입력받은 문자 배열을 뒤집어라.

설명

배열의 순서를 뒤집어 주는 reverse() 메소드를 사용해서 배열의 순서를 뒤집습니다.

답

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var reverseString = function(s) {
    return s.reverse();
};

LeetCode

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

Example 1:

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

Example 2:

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Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]

Constraints:

1 <= s.length <= 105 s[i] is a printable ascii character.

Follow up: Do not allocate extra space for another array. You must do this by modifying the input array in-place with O(1) extra memory.