Untitled

import java.util.Scanner; // Add Scanner class to allow user input from console

public class Main {

    public static void main(String[] args) {
        // Create a Scanner object to read user input
        Scanner scanner = new Scanner(System.in);
        boolean continueProgram = true; // Control loop for continuing the program

        // Loop until the user decides to exit
        while (continueProgram) {
            // Ask the User for Input - What Shape?
            System.out.println("Enter the shape (triangle, diamond, rectangle, heart):");
            String shape = scanner.nextLine().toLowerCase();

            // Ask the User for the size of the shape
            System.out.println("Enter the size:");
            int size = scanner.nextInt();

            // Ask the User for what type of Character to use for the Shape
            System.out.println("Enter the character to use for the shape:");
            char ch = scanner.next().charAt(0);
            scanner.nextLine(); // Consume newline after character input

            // Print the shape based on the user input
            switch (shape) {
                case "triangle":
                    printTriangle(size, ch);
                    break;
                case "diamond":
                    printDiamond(size, ch);
                    break;
                case "rectangle":
                    printRectangle(size, ch);
                    break;
                case "heart":
                    printHeart(size, ch);
                    break;
                default:
                    System.out.println("Invalid shape entered! Please try again.");
                    continue; // Restart the loop on invalid input
            }

            // Ask the user if they want to print another shape
            System.out.println("Do you want to print another shape? (yes/no):");
            String response = scanner.nextLine().toLowerCase();

            if (!response.equals("yes")) {
                continueProgram = false; // Exit the loop if the user enters anything other than "yes"
            }
        }

        System.out.println("Goodbye!"); // Farewell message before exiting
        scanner.close(); // Close the scanner object
    }

    // Method to print a right-aligned triangle
    public static void printTriangle(int size, char ch) {
        for (int i = 1; i <= size; i++) {
            for (int j = 1; j <= size - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print(ch);
            }
            System.out.println();
        }
    }

    // Method to print a diamond
    public static void printDiamond(int size, char ch) {
        int n = size / 2 + 1;
        // Upper part of the diamond
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print(ch);
            }
            System.out.println();
        }
        // Lower part of the diamond
        for (int i = n - 1; i >= 1; i--) {
            for (int j = 1; j <= n - i; j++) {
                System.out.print(" ");
            }
            for (int k = 1; k <= 2 * i - 1; k++) {
                System.out.print(ch);
            }
            System.out.println();
        }
    }

    // Method to print a rectangle
    public static void printRectangle(int size, char ch) {
        for (int i = 1; i <= size; i++) {
            for (int j = 1; j <= size; j++) {
                System.out.print(ch);
            }
            System.out.println();
        }
    }

    // Method to print a heart pattern with the given size and character
    public static void printHeart(int size, char ch) {
        // Ensure the size is valid for a heart shape
        if (size < 3) {
            System.out.println("Size too small for a heart shape. Please enter a size of 3 or more.");
            return;
        }

        // Upper part of the heart (two lobes)
        for (int m = 0; m < size; m++) {
            for (int n = 0; n <= 4 * size; n++) {
                // Calculate the positions for the two circular lobes
                double pos1 = Math.sqrt(Math.pow(m - size, 2) + Math.pow(n - size, 2));
                double pos2 = Math.sqrt(Math.pow(m - size, 2) + Math.pow(n - 3 * size, 2));

                // Print the character if within the lobe, otherwise print space
                if (pos1 < size + 0.5 || pos2 < size + 0.5) {
                    System.out.print(ch);
                } else {
                    System.out.print(' ');
                }
            }
            System.out.println(); // Move to the next line after printing one row
        }

        // Lower part of the heart (tapering bottom)
        for (int m = 1; m <= 2 * size; m++) {
            // Print leading spaces to align the bottom part
            for (int n = 0; n < m; n++) {
                System.out.print(' ');
            }
            // Print the tapering bottom part
            for (int n = 0; n < 4 * size + 1 - 2 * m; n++) {
                System.out.print(ch);
            }
            System.out.println(); // Move to the next line after printing one row
        }
    }
}