Calculate the number of business days (excluding weekends) between two given dates. Count only Monday through Friday, excluding Saturday and Sunday. The calculation is inclusive of the start date but exclusive of the end date.
Examples:
Input: startDate = 2025-01-06 (Monday), endDate = 2025-01-10 (Friday)
Output: 4
Explanation: Monday, Tuesday, Wednesday, Thursday are counted (4 business days)
Input: startDate = 2025-01-03 (Friday), endDate = 2025-01-08 (Wednesday)
Output: 3
Explanation: Friday, Monday, Tuesday are counted (weekend excluded)
Input: startDate = 2025-01-06 (Monday), endDate = 2025-01-06 (Monday)
Output: 0
Explanation: Same date, exclusive end date, so 0 days
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 Jan 2026
Contest runs January 1 - 31. Complete challenges to climb the leaderboard!
Points are calculated for challenges completed during the contest period.