Coding pencarian relasi fungsi

import java.io.*;

public class fungsi1

{ public static void main (String [] fungsi) throws Exception {

DataInputStream input=new DataInputStream(System.in);

System.out.println ("Masukkan banyak ordinat = ");

int jum=Integer.parseInt(input.readLine());

int x[]=new int[jum];

for(int i=0;i<jum;i++)

{

System.out.print("masukan elemen x ke-"+(i+1)+":");

x[i]=Integer.parseInt(input.readLine());

}

int a[]=new int[jum];

for (int i=0;i<jum;i++)

{

a[i]=x[i]*x[i]+x[i]+1;

}

int b[]=new int[jum];

for (int i=0;i<jum;i++)

{

b[i]=x[i]*x[i]+3;

}

int c[]=new int[jum];

for (int i=0;i<jum;i++)

{

c[i]=b[i]*b[i]+b[i]+1;

}

System.out.println("Fungsi f(x)=x^2+x+1");

System.out.println("Fungsi g(x)=x^2+3");

System.out.print("Maka f(x)={");

for (int i=0;i<jum;i++)

{

System.out.print(a[i]);

if(i!=jum-1)

{

System.out.print(",");

}}

System.out.print("}\n");

System.out.print("Maka g(x)={");

for (int i=0;i<jum;i++)

{

System.out.print(b[i]);

if(i!=jum-1)

{ System.out.print(",");

}}

System.out.print ("}");

System.out.print("Maka fog(x)={");

for (int i=0;i<jum;i++)

{

System.out.print(c[i]);

if(i!=jum-1)

{

System.out.print(",");

}

}

System.out.print("}\n");

System.out.print ("Relasi: {");

for (int i=0;i<jum;i++)

{

System.out.print ( "("+x[i]+","+a[i]+")");

if(i!=jum-1)

{

System.out.print(",");

}

}

System.out.print("}\n");

System.out.print("Relasi2: {");

for (int i=0;i<jum;i++)

{

System.out.print ( "("+x[i]+","+b[i]+")");

if(i!=jum-1)

{

System.out.print(",");

}

}

System.out.print("}\n");

}}