[JS] Reverse Words in a String III

🔒 문제 (LeetCode 557)

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

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.

 

🌊 입출력

Example 1:

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

Example 2:

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

 

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🔑 해결

🌌 알고리즘 - two pointers

/**
 * @param {string} s
 * @return {string}
 */
var reverseWords = function(s) {
    return s.split(' ').map(w => w.split('').reverse().join('')).join(' ');
};