Rounding up a number to nearest multiple of 5

Question

Does anyone know how to round up a number to its nearest multiple of 5? I found an algorithm to round it to the nearest multiple of 10 but I can\'t find this one.

T

Answer 1

I think I have it, thanks to Amir

double round( double num, int multipleOf) {
  return Math.floor((num + multipleOf/2) / multipleOf) * multipleOf;
}

Here's the code I ran

class Round {
    public static void main(String[] args){
        System.out.println("3.5 round to 5: " + Round.round(3.5, 5));
        System.out.println("12 round to 6: " + Round.round(12, 6));
        System.out.println("11 round to 7: "+ Round.round(11, 7));
        System.out.println("5 round to 2: " + Round.round(5, 2));
        System.out.println("6.2 round to 2: " + Round.round(6.2, 2));
    }

    public static double round(double num, int multipleOf) {
        return Math.floor((num +  (double)multipleOf / 2) / multipleOf) * multipleOf;
    }
}

And here's the output

3.5 round to 5: 5.0
12 round to 6: 12.0
11 round to 7: 14.0
5 round to 2: 6.0
6.2 round to 2: 6.0