557. Reverse Words in a String III

Problem

Tags: Two Pointers, String

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 * 10^4
• 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.

Code

JS

// 557. Reverse Words in a String III (4/7/53720)
// Runtime: 89 ms (59.32%) Memory: 44.89 MB (94.74%) 

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