Example: Full Number Pyramid (Centered) in Java

// Full Number Pyramid (Centered)
import java.util.Scanner;

// Main class containing the entry point of the program
public class Main {
    public static void main(String[] args) {
        // Step 1: Initialize Scanner for user input
        Scanner scanner = new Scanner(System.in);

        // Step 2: Prompt user for the number of rows
        System.out.print("Enter the number of rows for the full pyramid: ");
        int rows = scanner.nextInt();

        // Step 3: Outer loop for the number of rows
        for (int i = 1; i <= rows; i++) {
            // Step 4: Inner loop for printing leading spaces
            for (int space = 1; space <= rows - i; space++) {
                System.out.print("  "); // Print two spaces for alignment
            }

            // Step 5: Inner loop for printing numbers (ascending)
            for (int j = 1; j <= i; j++) {
                System.out.print(j + " ");
            }

            // Step 6: Inner loop for printing numbers (descending, excluding the peak)
            for (int j = i - 1; j >= 1; j--) {
                System.out.print(j + " ");
            }

            System.out.println(); // Move to the next line after each row
        }

        // Step 7: Close the scanner
        scanner.close();
    }
}