Java程序设计之豆机

• 题目描述
• 代码部分

import java.util.Scanner;

public class ch07Q21 {
    public static void main(String[] args) {
        int numOfBalls;
        int numOfSlots;
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter the numbers of balls to drop: ");
        numOfBalls = scanner.nextInt();
        System.out.print("Enter the number of slots in the bean machine: ");
        numOfSlots = scanner.nextInt();
        int[] slots = new int[numOfSlots];
        for (int i = 0; i < numOfBalls; i++) {
            slots[randomDirection(numOfSlots)]++;
        }
        printslots(numOfBalls, numOfSlots, slots);
        printNumOfSlots(numOfSlots);
    }

    public static int randomDirection(int slots) {
        int count = 0;
        for (int i = 0; i < slots - 1; i++) {
            int random = (int) (Math.random() * 2);
            if (random == 0) {
                System.out.print("L");
            } else {
                System.out.print("R");
            }
            count += random;
        }
        System.out.println();
        return count;
    }

    public static void printslots(int numBalls, int numSlots, int[] slots) {
        for (int i = numBalls; i > 0; i--) {
            for (int m = 0; m < numSlots; m++) {
                if ((slots[m] - i) >= 0) {
                    System.out.print("0");
                } else {
                    System.out.print(" ");
                }
            }
            System.out.println();
        }
    }

    public static void printNumOfSlots(int slots) {
        for (int i = 0; i < slots; i++) {
            System.out.print(i + 1);
        }
    }
}