Clean up a sentence by trimming it and reducing every sequence of whitespace characters (spaces, tabs, or newlines) to a single space. Return null when the input is null.
Examples:
String text = ' Salesforce Apex Challenge '; String normalized = normalizeWhitespace(text); // Results: 'Salesforce Apex Challenge' String text = 'Lines with Tabs'; String normalized = normalizeWhitespace(text); // Results: 'Lines with Tabs'
Apex Code Editor
Welcome to Lightning Challenge!
How 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
Contest Alert
🏆 #CodeEveryDay October 2026 (Oct 4–15)Sponsored by FLXBL
Contest runs October 4 - 15. Complete challenges to climb the leaderboard!
Prizes 1 & 2: Salesforce certification exam voucher — won by random drawing, where every point is a ticket. see all prizes
Only the 12 daily challenges shown during this contest count toward points. Earlier dailies don't carry over.