Join a list of strings into a single string with the specified delimiter.
Examples:
Input: strings = ['apple', 'banana', 'cherry'], delimiter = ', '
Output: 'apple, banana, cherry'
Explanation: The strings are joined with the delimiter ', ' between each element
Input: strings = ['one', 'two', 'three'], delimiter = '-'
Output: 'one-two-three'
Explanation: The strings are joined with the delimiter '-' between each element
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 June 2026
Contest runs June 1 - 30. Complete challenges to climb the leaderboard!
Only the 30 daily challenges shown during this contest count toward points. Earlier dailies don't carry over.