Reverse Words in a String III

📚 문제

Given a string s, reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:

Input: s = "Let's take LeetCode contest"
Output: "s'teL ekat edoCteeL tsetnoc"
Example 2:

Input: s = "God Ding"
Output: "doG gniD"

Constraints:

1 <= s.length <= 5 \* 104
s contains printable ASCII characters.
s does not contain any leading or trailing spaces.
There is at least one word in s.
All the words in s are separated by a single space.

💡 풀이

var reverseWords = function (s) {
    // 문자열을 배열로 바꾼다
    // 배열을 반복문을 돌려서 단어 단위로 거꾸로 돌린 문자열로 변환해서 result 배열에 추가해준다.
    // result 배열을 다시 문자열로 join해서 리턴한다

    let array = s.split(" ");
    let result = [];
    for (let i = 0; i < array.length; i++) {
        let reverse = "";
        for (let m = array[i].length - 1; m >= 0; m--) {
            reverse += array[i].charAt(m);
        }
        result.push(reverse);
    }
    return result.join(" ");
};