#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int main()
{
int i=0;
int j=0;
int n;
while(scanf("%d",&n) != EOF)
{
for(i=1;i<=n;i++)
{
for(j=1;j<=n-i;j++)
{
printf(" ");
}
for(j=1;j<=2*i-1;j++)
{
printf("%d",i);
}
for(j=0;j<abs(n/2-i);j++)
{
printf(" ");
}
printf("\n");
}
for(i=n-1;i>0;i--)
{
for(j=1;j<=n-i;j++)
{
printf(" ");
}
for(j=1;j<=2*i-1;j++)
{
printf("%d",i);
}
for(j=0;j<abs(n/2-i);j++)
{
printf(" ");
}
printf("\n");
}
}
return 0;
}
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b64543a98226cffc0b986d48bd014a90f703ea9e?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
追答nice to help you