Reverse the characters of each word in a sentence while preserving the original word order and spaces. Return empty string for empty input. Return null for null input.
Examples:
Input: sentence = "Hello World"
Output: "olleH dlroW"
Explanation: Each word is reversed, order is preserved
Input: sentence = "A B"
Output: "A B"
Explanation: Single letter words remain the same and spaces are preserved
Apex Code Editor
Welcome to Lightning Challenge!
Create an Account
Sign up to track your progress, earn points, and compete with others. Your solutions will be saved automatically.
Create accountHow It Works
- • Write your solution in the code editor
- • Connect your Salesforce org to test
- • Submit to check if your solution passes
- • Use hints if you get stuck
Note
You can test your code by connecting to Salesforce, but to save your progress and earn points, you'll need to create an account. Your solutions and achievements will be tracked automatically once you're logged in.