Leetcode 2894 Divisible and Non-divisible Sums Difference.go

func differenceOfSums(n int, m int) int {
    num1, num2 := 0,0
    for i:=1; i<=n; i++ {
        if i % m == 0 {
            num2 += i
        } else {
            num1 += i
        }
    }
    return num1 - num2
}