Union of 2 sets using MATLAB

The union A ∪ B of two sets A and B is defined as A ∪ B = {x : x ∈ A or x ∈ B};

If A = {1, 3, 5} and B = {1, 2, 3, 9}, then A ∪ B = {1, 2, 3, 5, 9}.

Thus essentially the union of sets A and B is the set with unique elements in set A or B, or both. This includes disregarding duplicate elements in a given set.

Note that the elements of union and intersection can be printed in any order.

MATLAB CODE:

clc

x=input('Enter the first array');

y=input('Enter the second array');

z=[];

z=[z x];

for i=1:length(y)

    m=y(i);

    s=0;

    for i=1:length(x)

        if(m==x(i))

            s=s+1;

        end

    end

    if(s==0)

        z=[z m];

    end

end

disp(z);

        

Explanation:

SAMPLE OUTPUT:

JAVA Code:

import java.util.Scanner;

class Oo

{

public static void main(String args[])

{

Scanner obj=new Scanner(System.in);

System.out.println("Enter the first array length:");

int l=obj.nextInt();

System.out.println("Enter the second array length:");

int p=obj.nextInt();

int a[]=new int[l];

int b[]=new int[p];

System.out.println("Enter "+l+" items");

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

{

a[i]=obj.nextInt();

}

System.out.println("Enter "+p+" items");

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

{

b[i]=obj.nextInt();

}

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

{

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

}

int m=0;

int yr=0;

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

{

m=b[i];

yr=0;

for(int k=0;k<l;k++)

{

if(m==a[k])

{

yr=yr+1;

}

}

if(yr==0)

{

System.out.print(m+" ");

}

}

}

}

SAMPLE OUTPUT: