Explanation :
If n=6 then output will be
1 1
12 21
123 321
1234 4321
12345 54321
123456654321.
Code:
import java.util.Scanner;public class Pattern12
{
public static void main( String arg[])
{
System.out.print("Enter the number of rows:");
Scanner sc=new Scanner(System.in);
int n=sc.nextInt();
int i,j,k;
for (i=1;i<=n;i++) {
for (j=1;j<=n;j++) {
if(j<=i)
System.out.printf("%d",j);
else
System.out.printf(" ");
}
for (j=n;j>=1;j--)
{
if(j<=i)
System.out.printf("%d",j);
else
System.out.printf(" ");
}
System.out.printf("\n");
}
sc.close();
}
}
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