Find the second largest number in a list of integers. If there is no second largest number (all numbers are the same or only one unique number exists), return null.

Examples:

Input: numbers = [5, 2, 8, 1, 9] Output: 8 Explanation: 9 is largest, 8 is second largest Input: numbers = [3, 3, 3] Output: null Explanation: All numbers are the same, no second largest exists Input: numbers = [10] Output: null Explanation: Only one number exists, cannot find second largest
Apex Code Editor
Sign in to Submit

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 account

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 Feb 2026

Contest runs February 1 - 28. Complete challenges to climb the leaderboard!

Points are calculated for challenges completed during the contest period.