Given a list of integers and a positive chunk size, split the list into sequential groups of the specified size. Return a list of lists that preserves the original order of items. The final group may contain fewer items when the list length is not a multiple of the chunk size. Return null when the source list is null and return an empty list when the chunk size is invalid.
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
Contest Alert
🏆 #CodeEveryDay May 2026
Contest runs May 1 - 31. Complete challenges to climb the leaderboard!
Only the 31 daily challenges shown during this contest count toward points. Earlier dailies don't carry over.