Question

1. Write a program that reads in two arrays (a1 and a2) of numbers and creates a new array (a3) of numbers such that the new array contains all the unique numbers of a1 and a2. Assume the input array elements are unique elements. In the main function, ask the user to enter the length of each array, declare and reads in the numbers for each array, and calculate and display the output array.

Example input/output #1:
Enter the length of array 1: 5
Enter the elements of the array: 8 4 1 3 9
Enter the length of array 2: 3
Enter the elements of the array: 5 4 8

Output array: 8 4 1 3 9 5

Example input/output #2:
Enter the length of array 1: 4
Enter the elements of the array: 3 4 1 7
Enter the length of array 2: 2
Enter the elements of the array: 6 9

Output array: 3 4 1 7 6 9

Answer 1

#include <iostream>
using namespace std;

void uniqueElement(int a1[], int a2[],
                           int a, int b)
{

    int j = 0,i = 0, k = 0;
    while (i < a && j < b)
   {
        if (a1[i] < a2[j])
       {
            cout << a1[i] << " ";
            i++; k++;
          
        }
        else if (a2[j] < a1[i]) {
            cout << a2[j] << " ";
            k++; j++;
          
        }

        else {
            i++; j++;
         
        }
    }

  
    while (i < a) {
        cout << a1[i] << " ";
        i++; k++;
       
    }
    while (j < b) {
        cout << a2[j] << " ";
        j++; k++;
    }
}
int main()
{
int a,b,i,j;
    int a1[10];
    int a2[10];
    cout<<"Enter the length of array 1";
   cin>>a;
   cout<<"Enter the elements of array 1";
   for(i=0;i<a;i++)
   {
       cin>>a1[i];
   }
   cout<<"Enter the length of array 2";
   cin>>b;
   cout<<"Enter the elements of array 2";
   for(j=0;j<b;j++)
   {
       cin>>a2[j];
   }
     cout<<"Output array:";
    uniqueElement(a1, a2, a, b);

    return 0;
}