Delete Duplicate Elements in an Array : C Program

Computer Science » C Program » Delete Duplicate Elements in an Array 

Program :

#include<stdio.h>
 
int main() 
{
   int arr[20], i, j, k, size;
 
   printf("nEnter array size : ");
   scanf("%d", &size);
 
   printf("nAccept numbers : ");
   for (i = 0; i < size; i++)
      scanf("%d", &arr[i]);
 
   printf("nArray with unique list  : ");
   for (i = 0; i < size; i++) {
      for (j = i + 1; j < size;) {
         if (arr[j] == arr[i]) {
            for (k = j; k < size; k++) {
               arr[k] = arr[k + 1];
            }
            size--;
         } else
            j++;
      }
   }
 
   for (i = 0; i < size; i++) {
      printf("%d ", arr[i]);
   }
 
   return (0);
}

Output :

Enter array size : 5
Accept numbers : 1 2 3 4 3
Array with unique list  : 1 2 3 4 

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