C Programs Tutorials | IT Developer
IT Developer

Java Programs - Advanced

Share with a Friend
Previous
HOME
Next

Combine Array Program - Java Program

A class Combine contains an array of integers which combines two arrays into a single array including the duplicate elements if any, and sorts the combined array. Some of the members of the class are given below:

Class name: Combine
Data members/instance variables:
com[ ]: integer array
size: size of the array

Member functions/methods:
Combine(int num): parameterized constructor to assign size = num.
void inputArray(): to accept the array elements.
void sort(): sorts the elements of combined array in ascending order using the selection sort technique.
void mix(Combine a, Combine b): combines the parameterized object arrays and stores the result in the current object array along with duplicate elements if any.
void display(): displays the array elements.

Specify the class Combine giving details of the constructor, void inputArray(). void sort(), void mix(Combine, Combine) and void display(). Also define the main() function to create an object and call the methods accordingly to enable the task.

Java 

import java.io.*;
class Combine{
    int com[];
    int size;
    public Combine(int num){
        size = num;
        com = new int[size];
    }
    public void inputArray()throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        for(int i = 0; i < size; i++)
            com[i] = Integer.parseInt(br.readLine());
    }

    public void sort(){
        for(int i = 0; i < size; i++){
            int small = com[i];
            int pos = i;
            for(int j = i + 1; j < size; j++){ if(small > com[j]){
                    small = com[j];
                    pos = j;
                }
            }
            int temp = com[i];
            com[i] = small;
            com[pos] = temp;
        }
    }

    public void mix(Combine a, Combine b){
        int index = 0;
        for(int i = 0; i < a.size; i++)
            this.com[index++] = a.com[i];
        for(int i = 0; i < b.size; i++)
            this.com[index++] = b.com[i];
    }
    public void display(){
        for(int i = 0; i < size; i++)
            System.out.print(com[i] + "\t");
        System.out.println();
    }

    public static void main(String args[])throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("First array size: ");
        int size1 = Integer.parseInt(br.readLine());
        System.out.print("Second array size: ");
        int size2 = Integer.parseInt(br.readLine());
        Combine obj1 = new Combine(size1);
        Combine obj2 = new Combine(size2);
        Combine obj3 = new Combine(size1 + size2);
        System.out.println("Enter first array elements:");
        obj1.inputArray();
        System.out.println("Enter second array elements:");
        obj2.inputArray();
        System.out.println("First array elements:");
        obj1.display();
        System.out.println("Second array elements:");
        obj2.display();
        obj3.mix(obj1, obj2);
        obj3.sort();
        System.out.println("Combined array:");
        obj3.display();
    }
}

Output

 
OUTPUT 1:

First array size: 3
Second array size: 3
Enter first array elements:
6
3
8
Enter second array elements:
2
1
5
First array elements:
6   3   8   
Second array elements:
2   1   5   
Combined array:
1   2   3   5   6   8     

OUTPUT 2:
First array size: 4
Second array size: 3
Enter first array elements:
9
4
7
1
Enter second array elements:
5
6
8
First array elements:
9   4   7   1   
Second array elements:
5   6   8   
Combined array:
1   4   5   6   7   8   9   

OUTPUT 3:
First array size: 5
Second array size: 3
Enter first array elements:
66
33
88
11
55
Enter second array elements:
22
44
77
First array elements:
66  33  88  11  55  
Second array elements:
22  44  77  
Combined array:
11  22  33  44  55  66  77  88
Previous
Next