/*	James Little wednesday 7th March 2001
	Lines and points
*/
package jlittle_ex1;
import basicIO.*;
import java.text.*;

public class Line {
	
	// datafields, type long for big calculations.
	private long [] xPoint;
	private long [] yPoint;
	private long [] hypotenuse;
	// s is the number of segments in the line.
	private int s;
	
	// line constructor accepts segments, line number and x, y arrays
	public Line(int segs, int a, long [] x, long [] y) {
		// segs is the number of segments in this line.. can be anything
		s=segs;
		// allocate array to array
		xPoint = x;
		yPoint = y;
		// might as well print the line number here :)
		Out.println("Line "+a);
		
	}
	
	
	// method think works out the distance of all segments and lines... also prints them
	public void think() {
	
		// local variables
		double distance=0;			// length of one segment
		double totalHyp=0;			// takes value of shortest distance 
		double totalDist=0;			// adds segment lengths
		DecimalFormat df = new DecimalFormat("0.0");		// for deciaml formatting
		
		// this loop calculates the segment length and prints it out
		// also calculates the total distance of the segments
		for(int i=0; i<s; i++){
			distance=(Math.sqrt((xPoint[i+1]-xPoint[i])*(xPoint[i+1]-xPoint[i])+(yPoint[i+1]-yPoint[i])*(yPoint[i+1]-yPoint[i])));
			Out.println("\tSegment "+(i+1)+" distance "+df.format(distance)+" units");
			totalDist+=distance;	
		}	
		
		// prints the total of the line
		Out.println("\tTotal distance is: " + df.format(totalDist) + " units");
		
		// long x and y accept the value of any difference between point 1 and point infinity, and square it
		long x=(xPoint[xPoint.length-1]-xPoint[0])*(xPoint[xPoint.length-1]-xPoint[0]);
		long y=(yPoint[yPoint.length-1]-yPoint[0])*(yPoint[yPoint.length-1]-yPoint[0]);
		
		// total hyp accepts the hypotenuse
		totalHyp=Math.sqrt(x+y);
		
		// if the total hypotenuse is only one unit, then i will print a singular version.
		if(totalHyp==1.0){
			Out.println("\tStart-End shortest distance is: " + df.format(totalHyp) + " unit");
		}else Out.println("\tStart-End shortest distance is: " + df.format(totalHyp) + " units");
	}
	
	
	
}

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Content-Disposition: form-data; name="userfile"; filename="LinesAndPoints.java"

/*	James Little wednesday 7th March 2001
Lines and points
*/
package jlittle_ex1;

import basicIO.*;

public class LinesAndPoints {

private static long [] xCoOrdinates, yCoOrdinates;


public static void main(String [] args) {
   int count = 1;
   int sent =0;
   int pointNumber = 0;
   int temp = 0;



   while (In.readLine() != null) {
       // set array index
       if(In.countTokens()==1){	// entry only valid if there is only one token
	   temp=In.getInt();
	   if((temp>=2)&&(temp<=19)){
	       pointNumber=temp;
	   }else{
	       System.out.println("Error : Sorry only reasonable input for the \"number of points\" should apply. Program terminated.");
	       System.exit(-1);
	   }

	   // initialize arrays
	   xCoOrdinates = new long[pointNumber];
	   yCoOrdinates = new long[pointNumber];
       }else if(In.countTokens()>1){
	   System.out.println("Error : Wrong number of entries for point number. Program terminated.");
	   System.exit(-1);
       }else{
	   System.out.println("Error: invalid input... not enough points.");
	   System.exit(-1);
       }// end if
	   
       
       // read points into  x and y arrays
       for(int i=0; i<pointNumber; i++) {
	   In.readLine();
	   if(In.countTokens()==2){	// entry only valid if two tokens on line

	       temp = In.getInt();
	       if((temp>=0)&&(temp<=99999)){
		   xCoOrdinates[i] = temp;
	       }else{
		   // terminate program and reason for termination
		   System.out.println("Error : Input out of range (0-99999). Program terminated.");
		   System.exit(-1);
	       }

	       temp = In.getInt();
	       if((temp>=0)&&(temp<=99999)){
		   yCoOrdinates[i] = temp;
	       }else {
		   // terminate program and reason for termination
		   System.out.println("Error : Input out of range (0-99999). Program terminated.");
		   System.exit(-1);
	       }
	   }else{
	       // terminate program and reason for termination
	       System.out.println("Error : Not enough points. Program terminated.");
	       System.exit(-1);
	   }
       }// end for loop

       // send messages
       int segments = pointNumber-1;
       
       Line l = new Line(segments, count, xCoOrdinates, yCoOrdinates);
       l.think();
       // count just keeps track of the line number
       count++;
   } // end while loop	

   System.out.println("END OF OUTPUT");

}// end main method
		
}// end class