Example: Inverted Half Pyramid Pattern (Numbers) in Java

// Inverted Half Pyramid Pattern (Numbers)
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 pyramid: ");
        int numRows = scanner.nextInt();

        // Step 3: Outer loop for rows
        // It iterates from 'numRows' down to 1, controlling each row of the pyramid.
        for (int i = numRows; i >= 1; i--) {
            // Step 4: Inner loop for printing numbers in the current row
            // It iterates from the current row number 'i' down to 1.
            // Each iteration prints a number followed by a space.
            for (int j = i; j >= 1; j--) {
                System.out.print(j + " ");
            }
            // Step 5: Move to the next line after printing all numbers for the current row
            System.out.println();
        }

        // Step 6: Close the scanner to prevent resource leak
        scanner.close();
    }
}