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  1. All Contests
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  3. Project Euler #1: Multiples of 3 and 5
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Project Euler #1: Multiples of 3 and 5

  • snehilgamit55
     + 0 comments
    public static void mutiples(int n){
        long m1 = (n-1)/3,m2 = (n-1)/5, m3 = (n-1)/15;
        
        long sum1 = 3*((m1*(m1+1)/2)), sum2 = 5*((m2*(m2+1)/2)), sum3 = 15*((m3*(m3+1)/2));
        
        long sum = sum1+sum2-sum3;
        System.out.println(sum);
    }