View Code of Problem 57

#include <stdio.h>
void main(){
	int n,i,j,k;
	scanf("%d",&n);
	for(i=1;i<=n;i++){
		for(j=1;j<=n-i;j++){
			printf(" ");
		}
		for(k=1;k<2*i;k++){
			if(k<=i)
				printf("%d",k);
			else
				printf("%d",2*i-k);
		}
		printf("\n");
	}
	for(i=n-1;i>=1;i--){
		for(j=1;j<=n-i;j++){
			printf(" ");
		}
		for(k=1;k<2*i;k++){
			if(k<=i)
				printf("%d",k);
			else
				printf("%d",2*i-k);
		}
		printf("\n");
	}
}