Thursday, January 19, 2012

sum of no who are multiple of 5 or 3

/*
 * bhatt.umang7@gmail.com
 */

/*
 * If we list all the natural numbers below 10 that are multiples of 3 or 5,
 * we get 3, 5, 6 and 9. The sum of these multiples is 23.
 * Find the sum of all the multiples of 3 or 5 below 1000.
 */

public class Problem1
{

    public static void main(String args[])
    {
        int n = 1000 ;

        int sum = 0 ;
        for (int i = 1 ; i < n ;i++)
        {

            if ((i%3 == 0 ) || (i%5==0) )
            {

                sum+=i;
            }
        }
        System.out.println("Sum is "+ sum );

        // ans is 233168
    }
}

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