import java.io.*;

public class claseconjun {
	static void union(int A[], int B[]) {
		int C[] = new int[600];
		for (int i = 0, cont = 0; i < 5; i++)
			for (int j = 0; j < 5; j++)
				if (A[i] == B[j])
					C[cont++] = A[i];
		System.out.println("La union de A y B es:");
		for (int i = 0; i < 10; i++)
			System.out.print(C[i] != 0 ? C[i] + "" : "");

	}

	static void interseccion(int A[], int B[]) {
		int C[] = new int[600];
		for (int i = 0; i < 5; i++)
			C[i] = A[i];
		for (int i = 0, cont = 5; i < 5; i++) {
			C[cont++] = B[i];
			for (int j = 0; j < 5; j++)
				if (C[j] == B[i])
					--cont;
		}
		System.out.println("La interseccion de A y B es:");
		for (int i = 0; i < 10; i++)
			System.out.print(C[i] != 0 ? C[i] + "" : "");

	}

	public static void main(String[] args) throws IOException {
		int A[] = new int[5];
		int B[] = new int[5];
		System.out.println("Ingrese la Opcion ");
		System.out.println("1. Calculo  Union ");
		System.out.println("2. Calculo Interseccion");

		System.out.println("Ingrese la Opción = ");
		BufferedReader dato1 = new BufferedReader(new InputStreamReader(
				System.in));
		int OP = Integer.valueOf(dato1.readLine().trim()).intValue();
		switch (OP) {
		case 1: {
			for (int i = 0; i < 5; i++) {
				System.out.println("Ingrese Valor en A[" + i + "] = ");
				dato1 = new BufferedReader(new InputStreamReader(System.in));
				int X = Integer.valueOf(dato1.readLine().trim()).intValue();
				A[i] = X;
			}
			for (int i = 0; i < 5; i++) {
				System.out.println("Ingrese Valor en B[" + i + "] = ");
				BufferedReader dato2 = new BufferedReader(
						new InputStreamReader(System.in));
				int Y = Integer.valueOf(dato2.readLine().trim()).intValue();
				B[i] = Y;
			}

			union(A, B);

			break;
		}
		case 2:
			for (int i = 0; i < 5; i++) {
				System.out.println("Ingrese Valor en A[" + i + "] = ");
				dato1 = new BufferedReader(new InputStreamReader(System.in));
				int X = Integer.valueOf(dato1.readLine().trim()).intValue();
				A[i] = X;
			}
			for (int i = 0; i < 5; i++) {
				System.out.println("Ingrese Valor en B[" + i + "] = ");
				BufferedReader dato2 = new BufferedReader(
						new InputStreamReader(System.in));
				int Y = Integer.valueOf(dato2.readLine().trim()).intValue();
				B[i] = Y;
			}
			interseccion(A, B);
			break;
		default: {
			System.out.println("Valor no Valido");
			break;
		}
		}
	}
}

import java.io.*;
import java.util.*;
import javax.swing.*;
public class claseconjunto {
    static ArrayList listA = new ArrayList();
    static ArrayList listB = new ArrayList();
    static ArrayList listC = new ArrayList();
    
    static void imprimirC(String x) {
        String resultado="La "+x+" de A y B es:\n";
        Iterator it = listC.iterator();
        while( it.hasNext() )
            resultado+=it.next() + " ";
        JOptionPane.showMessageDialog(null,resultado);
    }
    static void union() {
        listA.trimToSize();
        listB.trimToSize();
        for( int i = 0; i < listA.size(); i++ )
            if( listB.contains(listA.get(i)) && !listC.contains(listA.get(i)) )
                listC.add(listA.get(i));
        imprimirC("union");
    }
    
    static void interseccion() {
        listA.addAll(listB);
        Collections.sort(listA);
        Iterator it = listA.iterator();
        Object temp = null, sig = null;
        while( it.hasNext() ) {
            sig=it.next();
            if(sig!=temp) {
                temp=sig;
                listC.add(sig);
            }
        }
        imprimirC("interseccion");
    }
    
    public static void main(String[] args) throws IOException {
        int OP = Integer.parseInt(JOptionPane.showInputDialog(null,"1. Calculo Union\n2. Calculo Interseccion\n\nDigita la opcion"));
        for (int i = 0; i < 5; i++)
            listA.add(i, Integer.parseInt(JOptionPane.showInputDialog(null,"Ingrese Valor en A[" + i + "] = ")));
        for (int i = 0; i < 5; i++)
            listB.add(i, Integer.parseInt(JOptionPane.showInputDialog(null,"Ingrese Valor en B[" + i + "] = ")));
        switch (OP) {
            case 1:
                union();
                break;
            case 2:
                interseccion();
                break;
            default:
                System.out.println("Valor no Valido");
                break;
        }
    }
}