Task

The objective is to write a function that finds the sum of all positive multiples of 3 or 5 below n.

Show output for n = 1000.

This is is the same as Project Euler problem 1.

Extra credit: do this efficiently for n = 1e20 or higher.




def getSum(n)
        sum = 0
        for i in range(3, n - 1)
                if (i % 3 = 0) or (i % 5 = 0)
                        sum += i
                end
        end
        return sum
end
 
println getSum(1000)