CSC-111 Beane Machine Homework

BeaneMachine.java

/*
 * Name: Prof. Antonio C. Silvestri	
 * Date: 11/22/2019
 * Course Number: CSC-111
 * Course Name: Intro to Java Programming
 * Problem Number: 9
 * Email: silvestri@stcc.edu
 * Description: Bean Machine Homework
 */

import java.util.Scanner;

public class BeanMachine {
	private static final String TITLE = "Bean Machine V1.0";
	private static final String CONTINUE_PROMPT = "Do this again? [y/N] ";

	//**********************************************

	private static int maximum(int[] slots) {
		int max = slots[0];
		for (int i = 1; i < slots.length; i++)
			if (slots[i] > max)
				max = slots[i];
		return max;
	}
	
	//**********************************************

	private static void verticalHistogram(int[] slots) {
		int max = maximum(slots);
		for (int row = max; row >= 0; row--) {
			for (int i = 0; i < slots.length; i++)
				System.out.printf("%5s", slots[i] > row ? "O" : " ");
			System.out.println();
		}
		System.out.print("    +");
		for (int i = 1; i < slots.length; i++)
			System.out.print("----+");
		System.out.println();
		System.out.print(" ");
		for (int i = 0; i < slots.length; i++)
			System.out.printf("%5s", "(" + slots[i] + ")");
		System.out.println();
		for (int i = 0; i < slots.length; i++)
			System.out.printf("%5d", i);
		System.out.println();
	}

	//**********************************************

	private static void horizontalHistogram(int[] slots) {
		for (int i = 0; i < slots.length; i++) {
			System.out.printf("%3d: ", i);
			for (int j = 0; j < slots[i]; j++)
				System.out.print("O");
			System.out.printf("%s(%d)\n", slots[i] > 0 ? " " : "", slots[i]);
		}
		
	}
	
	//**********************************************
	
	private static int[] generateSlotTotals(int total, int levels) {
		int[] slots = new int[levels + 1];
		for (int i = 0; i < total; i++) {
			int rightCount = 0;
			for (int j = 0; j < levels; j++)
				if (Math.random() >= 0.5) {
					rightCount++;
				}
			slots[rightCount]++;
		}
		return slots;
	}

	//**********************************************
	
	private static void process(Scanner sc, String args[]) {
		System.out.print("How many balls do you want to drop? ");
		int total = sc.nextInt();
		System.out.print("How many levels in the machine? ");
		int levels = sc.nextInt();
		sc.nextLine();
		int slots[] = generateSlotTotals(total, levels);
		horizontalHistogram(slots);
		System.out.println();
		verticalHistogram(slots);
	}
	
	//**********************************************
	
	private static boolean doThisAgain(Scanner sc, String prompt) {
		System.out.print(prompt);
		String doOver = sc.nextLine();
		return doOver.equalsIgnoreCase("Y");
	}
	
	//**********************************************
	
	public static void main(String args[]) {
		System.out.println("Welcome to " + TITLE);
		Scanner sc = new Scanner(System.in);
		do {
			process(sc, args);
		} while (doThisAgain(sc, CONTINUE_PROMPT));
		sc.close();
		System.out.println("Thank you for using " + TITLE);
	}

}