/* Delete duplicate array elements - Program to delete all the duplicate values from a given array */

#include  <stdio.h>
#include  <conio.h>

void  main()
{
    int  i, j, k, m, n, x[50] ;
    clrscr() ;
    printf("Enter the number of elements: ") ;
    scanf("%d", &n) ;
    printf("Enter the elements: \n") ;
    for(i=0 ; i<n ; i++)
        scanf("%d", &x[i]) ;
    printf("Original array is as shown: \n") ;
    for(i=0 ; i<n ; i++)
        printf("%d ", x[i]) ;
    printf("\n") ;
    /* Removing duplicates */
    m=n ;
    for(i=0 ; i<n-1 ; i++)
        for(j=i+1 ; j<m ; j++)
            if(x[i]==x[j]) /* true if duplicate found */
                {
                    for(k=j+1 ; k<m ; k++)
                        x[k-1]=x[k] ;
                    m-- ;
                }
    /* At this stage, array length is m not n */
    printf("New array with no duplicates is as shown: \n") ;
    for(i=0 ; i<m ; i++)
        printf("%d ", x[i]) ;
    getch();
}

/*
Output1:

Enter the number of elements: 8
Enter the elements:
2 1 4 2 9 6 4 5
Original array is as shown:
2 1 4 2 9 6 4 5
New array with no duplicates is as shown:
2 1 4 9 6 5

Output2:

Enter the number of elements: 4
Enter the elements:
2 8 4 5
Original array is as shown:
2 8 4 5
New array with no duplicates is as shown:
2 8 4 5
*/