Write a function that filters a map based on a list of keys. The function should return a new map containing only the key-value pairs whose keys are in the given list.
Examples:
Input: originalMap = {'a' => 1, 'b' => 2, 'c' => 3}, keys = ['a', 'c']
Output: {'a' => 1, 'c' => 3}
Explanation: Only the keys 'a' and 'c' from the original map are included
Input: originalMap = {'x' => 10, 'y' => 20, 'z' => 30}, keys = ['y']
Output: {'y' => 20}
Explanation: Only the key 'y' from the original map is included
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.