import java.util.*;
class Main{
public static void main(String ...a){
int temp=1,i,j,k;
Scanner sc= new Scanner(System.in);
System.out.print("Enter number of rows: ");
int n= sc.nextInt();
for (i=0; i<n; i++) {
for (k=1; k <= n-i; k++)
{
System.out.print(" ");
}
for (j=0; j<=i; j++) {
if (j==0 || i==0)
temp = 1;
else
temp=temp*(i-j+1)/j;
System.out.print(" "+temp);
}
System.out.println("");
}
}
}
Output
Enter number of rows: 5
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1