// SET INTERSECTION APPLICATION 
// Frans Coenen
// Dept Computer Science, University of Liverpool
// 7 July 1999
// Revised: Tuesday 30 august 2005

import java.util.*;

class SetIntersectionApp{

    // ------------------- FIELDS ------------------------ 
        
    // Create Scanner class instance
    private static Scanner keyboardInput = new Scanner(System.in);
    
    
    // ------------------ METHODS ------------------------  
    
    /* Main method */
    
    public static void main(String[] args) {
		// Create and input values for two sets.	
		SetOperations set1 = createNewSetIOver2();
		SetOperations set2 = createNewSetIOver2();
	
		// Determine intersection	
		SetOperations set3 = set1.intersection(set2);
	
		// Output 	
		System.out.println("Set1 = " + set1);
		System.out.println("Set2 = " + set2);
		System.out.println("Intersection = " + set3);
		}
	
    /* CREATE NEW SET IO VERSION 2: Method to allow input of set size  
    and cause the creation of an instance of the class SetIOver2 */
    
    private static SetOperations createNewSetIOver2() {
		// Input number of elements in set and then create instance  
		// of set IO class.	
		System.out.println("Input number of elements in set");
		int setSize = keyboardInput.nextInt();
		SetOperations newSet = new SetOperations(setSize);
	
        // Input for set 	
		if (setSize != 0) {
	    	System.out.println("Input values for set.");
	    	newSet.inputSet();
	    	}
		else System.out.println();
	    
		// Return	
		return(newSet);
		}
    }