Implement a function to reverse an integer. Given an integer, return the integer with its digits reversed.
Examples:
Input: num = 123
Output: 321
Explanation: Reversing the digits 1, 2, 3 gives 321
Input: num = -456
Output: -654
Explanation: The sign remains the same, only the digits are reversed
Input: num = 1000
Output: 1
Explanation: Leading zeros in the result are removed
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 July 2026
Contest runs July 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.