Write C program to delete all duplicate elements from an array
#include <stdio.h>
#define MAX_SIZE 100 // Maximum size of the array
int main()
{
int arr[MAX_SIZE]; // Declares an array of size 100
int num; // Total number of elements in array
int i, j, k;
//Enter size of array
printf("Enter size of the array : ");
scanf("%d", &num);
//Reading elements of array
printf("Enter elements in array : ");
for(i=0; i<num; i++)
{
scanf("%d", &arr[i]);
}
// Finding all duplicate elements in array
for(i=0; i<num; i++)
{
for(j=i+1; j<num; j++)
{
//If any duplicate found */
if(arr[i] == arr[j])
{
// Delete the current duplicate element
for(k=j; k<num; k++)
{
arr[k] = arr[k + 1];
}
//Decrement size after removing duplicate element
num--;
// If shifting of elements occur then don't increment j
j--;
}
}
}
// Print array after deleting duplicate elements
printf("\nArray elements after deleting duplicates : ");
for(i=0; i<num; i++)
{
printf("%d\t", arr[i]);
}
return 0;
}
Result
