使用Java / javascript的十进制值的数学余数商数程序

Question

Hi I am trying to write a program using Javascript/Java to get the quotient (with decimal values) and remainder as shown in the below attachment. I used regular remainder operator (%) but not getting the actual remainder as shown below. Can someone please help me how to implement this.

Non-zero remainder:

In Javascript I wrote:

<script>
 var a = 17.0;
 var b = 5;
 var x = a % b;
</script>

Where as In Java when I wrote

import java.math.*;
public class CalculateRemainder {
public static void main(String[] args) {
  float divider, remainder;
  int dividend;

  divider = 17.0f;
  dividend = 5;

  remainder = divider%(dividend);

  String str = "The remainder is " + remainder;
  System.out.println( str);
  }
 }

I am getting Remainder as "2.0" instead of "0" (as shown in the image). Same is the case with JavaScript.

Answer 1

If you want the remainder after some precision then use this:

 function remainder(dividend, divisor, precision = 4) { var result = (dividend / divisor).toString(); var dot = result.indexOf('.'); if(dot == -1) return 0; // it was a perfect division (9 / 3 for example) var remainder = "0." + result.substr(dot + precision); // get the part after the precision return Math.round(remainder * divisor); // multiply it by the divisor and round the result } console.log(remainder(9.1, 3, 3)); 

Note: The result could be different for different precisions.