• Author: Graham Mitchell
• Filename: DistanceFormula.java

Distance Formula

Write a function to compute the distance between two points. Given two points (x₁, y₁) and (x₂, y₂), the distance between these points is given by the formula:

You must name the function distance, and it must return a double giving the distance between the two points.

Files Needed

• DistanceFormula.java

 
public class DistanceFormula
{
	public static void main( String[] args )
	{
		// test the formula a bit
		double d1 = distance(-2,1 , 1,5);
		System.out.println(" (-2,1) to (1,5) => " + d1 );
 
		double d2 = distance(-2,-3 , -4,4);
		System.out.println(" (-2,-3) to (-4,4) => " + d2 );
 
		System.out.println(" (2,-3) to (-1,-2) => " + distance(2,-3,-1,-2) );
 
		System.out.println(" (4,5) to (4,5) => " + distance(4,5,4,5) );
	}
 
	public static double distance( int x1, int y1, int x2, int y2 )
	{
		// put your code up in here
	}
}

 
 (-2,1) to (1,5) => 5.0
 (-2,-3) to (-4,4) => 7.280109889280518
 (2,-3) to (-1,-2) => 3.1622776601683795
 (4,5) to (4,5) => 0.0

©2013 Graham Mitchell

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