Practice/Meta/Leetcode 557. Reverse Words in a String III

Leetcode 557. Reverse Words in a String III

CodingMust

Problem

Given a string containing multiple words separated by single spaces, reverse the character order within each individual word while keeping the words in their original positions. The string will contain only printable ASCII characters and will not have leading or trailing spaces.

Requirements

1. Reverse the characters within each word independently
2. Maintain the original order of words in the sentence
3. Preserve the single space between words
4. Return a new string with the transformed words

Constraints

• 1 ≤ s.length ≤ 50,000
• The string consists of printable ASCII characters
• Words are separated by exactly one space
• No leading or trailing spaces in the input
• Each word contains at least one character

Examples

Example 1:

Input: s = "Let's take LeetCode contest" Output: "s'teL ekat edoCteeL tsetnoc" Explanation: Each word has its characters reversed: "Let's" becomes "s'teL", "take" becomes "ekat", etc.

Example 2:

Input: s = "Hello" Output: "olleH" Explanation: With only one word, we simply reverse its characters.

Example 3:

Input: s = "I love programming" Output: "I evol gnimmargorp" Explanation: The single character word "I" stays as "I", while longer words are reversed.