Following is the logic in the pattern:
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Let the number of lines to be printed be n, with the lines numbered from i = 1 to n.
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To print line i,
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Print number (n-i+1) (n-i+1) times
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Print numbers from i to 1
Program
import java.util.Scanner;
public class Pattern {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter n: ");
int n = scanner.nextInt();
for (int i = 1; i <= n; i++) {
int num = n - i + 1;
for (int j = 1; j <= num; j++) {
System.out.print(num + " ");
}
for (int j = i; j >= 1; j--) {
System.out.print(j + " ");
}
System.out.println();
}
}
}
Sample output
Enter n: 4
4 4 4 4 1
3 3 3 2 1
2 2 3 2 1
1 4 3 2 1
