I am trying to remove duplicates value in array

sequence is [1, 2, 1, 2, 5]

Program should give output [ 1, 2, 0, 0, 5]

1 == 2
1 == 1 found replace with zero 1 2 0 2 5
1 == 2
1 == 5

2== 1
2 == 2 found replace with zero 1 2 0 0 5
1 == 2
1 == 5
....... and son

I wrote code but struggling with inner loop to update array value

Code:
#include<stdio.h>

int main()
{


	int array[5] = { 1, 2, 1, 2, 5};


     for ( int i = 0; i < 5; i ++)
	 {
		 for ( int j = 0; j < 5; j++)
		 {
			 if ( array[i] == array[j+1])
			 {
				 
				  
			 } 
		 }	
	 }


     for ( int i = 0; i < 5; i ++)
	 {
		 printf("%d ", array[i]);
	 }
   return 0;


}