import java.util.*;
public class polygonrunner
{
    public static void main(String[] args)
    {
        //Creater an object and array
        Scanner in = new Scanner(System.in);
        polygon PolygonW = new polygon();
        ArrayList<Double> PolygonX = new ArrayList<Double>();
        ArrayList<Double> PolygonY = new ArrayList<Double>();
        double[] PolygonZ = new double[2];     
        int count=0,check=0;
        //get Value
        do
        {
            System.out.print("Enter the position X : ");
            PolygonX.add(in.nextDouble());
            System.out.print("Enter the position Y : ");
            PolygonY.add(in.nextDouble());
            count++;
            if(count==3)System.out.print("Thisis become a triangle.\n");
            else if(count==4)System.out.print("Thisis become a rectangle.\n");
            else if(count>=5)
            {
                System.out.print("Do you want to add more point (1=Y,2=N): ");
                check=in.nextInt();
            }
        }while(check!=2);
        int i,j,k;
        i=PolygonX.size();
        j=PolygonY.size();
        //process Parimeter
        for(k=0;k<i-1;k++)
        {
            PolygonZ[0]=PolygonW.perimeter(PolygonX.get(k),PolygonX.get(k+1),PolygonY.get(k+1),PolygonY.get(k+1));
        }
        //process Area
        for(k=0;k<i;k++)
        {    
            PolygonZ[1]=PolygonW.area(PolygonX.get(k),PolygonY.get(k+1),k,i);
            if(k+1>j-1)
            {
                PolygonZ[1]=PolygonW.area(PolygonX.get(k),PolygonY.get(0),k,i);
            }
             System.out.println("Parimetr of this Shape"+PolygonZ[0]);
             System.out.println("Area of this Shape"+PolygonZ[1]);
        }  
    }
}

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