View Code of Problem 57

#include <stdio.h>
#include <math.h>

int main(){
	int i,j,k,m,n;
	scanf("%d",&n);
	for(i=1;i<=n;i++){
		for(j=0;j<n-i;j++) 
			printf(" ");
		for(j=1;j<=i;j++)
			printf("%d",j);
			j-=2;
		for(j;j>=1;j--)
			printf("%d",j);
	printf("\n");	
	}
	for(i=n-1;i>=1;i--)//5
	{	for(j=0;j<n-i;j++) 
			printf(" ");
		for(j=1;j<=i;j++)
			printf("%d",j);
		j-=2;
		for(j;j>=1;j--)
			printf("%d",j);
	printf("\n");	
	}
    return 0;
}

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