View Code of Problem 57

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

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