[Java]亂數練習

今天練習了一下亂數程式撰寫

package com.java.random;

import java.util.*;

public class Guess {
	public static void main(String[] arg) {
		Scanner scanner = new Scanner(System.in);
		int number = (int) (Math.random() * 10);
		int guess;
		do {
			System.out.println("你看不見我，實際數字：" + number);
			System.out.println("輸入");
			guess = scanner.nextInt();
		} while (guess != number);
		System.out.println("猜中");
	}
}

因為我比較懶惰，所以又寫了另外一隻，讓系統自己玩。

package com.java.random;

import java.util.*;

public class RandomSample {
	public static void main(String[] arg) {
		Scanner scanner = new Scanner(System.in);
		System.out.println("請輸入系統比對次數");
		int max = scanner.nextInt();
		for (int i = 0; i < max; i++) {
			// 產生0 ~ 42正整數
			int random1 = (int) (Math.random() * 42 + 1);
			int random2 = (int) (Math.random() * 42 + 1);
			if (random1 == random2) {
				System.out.println("於第" + i + "次命中");
				break;
			} else {
				System.out.println("運氣很差~~~");
			}
		}
	}
}

感覺下面比較像一點

package com.java.random;

import java.util.*;

public class RandomSample {
	public static void main(String[] arg) {
		Scanner scanner = new Scanner(System.in);
		System.out.println("請輸入系統比對次數");
		int max = scanner.nextInt();
		// 產生0 ~ 42正整數
		int random1 = (int) (Math.random() * 42 + 1);
		System.out.println("系統產生亂數：" + random1);
		for (int i = 0; i < max; i++) {
			int random2 = (int) (Math.random() * 42 + 1);
			System.out.println("電腦A:猜測亂數" + random2);
			if (random1 == random2) {
				System.out.println("電腦A於第" + i + "次命中");
				break;
			} else {
				System.out.println("下次再來~~~");
			}
		}
	}
}