- C
- C++
- Java
- C#
- Python
C
#include <stdio.h>
int main()
{
int n = 5, x = 1;
int i,j;
for(i = 1; i <= n; i++)
{
for (j = 1; j <= n * 2; j++)
{
if (j >= n - i + 1 && j <= n + i - 1)
printf("%2d", x++);
else
printf(" ");
}
printf("\n");
}
return 0;
}