Create a method that performs various operations on two sets of integers and returns the results in a map. The operations to implement are:
- Union - all elements that are in either set
- Intersection - only elements that are in both sets
- Difference - elements that are in the first set but not in the second
- Symmetric Difference - elements that are in either set but not in both
Examples:
Input: set1 = {1, 2, 3}, set2 = {3, 4, 5}
Output: {
'union' => {1, 2, 3, 4, 5},
'intersection' => {3},
'difference' => {1, 2},
'symmetricDifference' => {1, 2, 4, 5}
}
Input: set1 = {10, 20, 30}, set2 = {40, 50, 60}
Output: {
'union' => {10, 20, 30, 40, 50, 60},
'intersection' => {},
'difference' => {10, 20, 30},
'symmetricDifference' => {10, 20, 30, 40, 50, 60}
}
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 September 2026 (Sep 16–30)Sponsored by FLXBL
Contest runs September 16 - 30. 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 15 daily challenges shown during this contest count toward points. Earlier dailies don't carry over.