# Java 中的 HiLo 猜谜游戏 > 原文： [https://howtodoinjava.com/puzzles/hilo-guessing-game-in-java/](https://howtodoinjava.com/puzzles/hilo-guessing-game-in-java/) 你们中的许多人在您的童年时代一定玩过 HiLo 游戏。 即使不完全相同，游戏也可能与此类似。 很好玩吧？ 那如果我们现在成年了怎么办？ 让我们以自己的方式再次玩这个游戏。 让我们为此构建一个 Java 程序，然后开始玩这个精彩的游戏 HiLo。 ## 用 Java 编写 HiLo 游戏 在下面的程序中，我尝试用 Java 语言模拟 HiLo 游戏。 我为此版本的游戏设定了两个简单的规则： 1. 最多猜 6 次密码。 2. 密码是 1 到 100（含）之间的整数。 每次您猜到一个低于密码的数字（只有 JRE 知道）时，都会打印“LO”。 同样，如果您猜到一个比密码高的数字，则会打印“HI”。 您必须调整下一个猜测，以便能够在六次尝试中猜测正确的数字。 ```java package hilo; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.util.Random; public class HiLo { private Random generator; private int generatedNumber; private int numberOfAttempts; BufferedReader reader = null; public HiLo() { generator = new Random(); reader = new BufferedReader(new InputStreamReader(System.in)); } public void start() throws IOException { boolean wantToPlay = false; boolean firstTime = true; do { System.out.println(); System.out.println(); System.out.println("Want to play the game of Hi and Lo??"); if (wantToPlay = prompt()) { generatedNumber = generateSecretNumber(); numberOfAttempts = 0; if (firstTime) { describeRules(); firstTime = false; } playGame(); } } while (wantToPlay); System.out.println(); System.out.println("Thanks for playing the game. Hope you loved it !!"); reader.close(); } private void describeRules() { System.out.println(); System.out.println("Only 2 Rules:"); System.out.println("1) Guess the secret number in maximum 6 tries."); System.out.println("2) The secret number is an integer between 1 and 100, inclusive :-)"); System.out.println(); System.out.println(); } private int generateSecretNumber() { return (generator.nextInt(100) + 1); } private void playGame() throws IOException { while (numberOfAttempts < 6) { int guess = getNextGuess(); if (guess > generatedNumber) { System.out.println("HI"); } else if (guess < generatedNumber) { System.out.println("LO"); } else { System.out.println("Brave Soul, You guessed the right number!! Congratulations !!"); return; } numberOfAttempts++; } System.out.println("Sorry, you didn't guess the right number in six attempts. In other two words, YOU LOST !!!!"); System.out.println("The secret number was " + generatedNumber); } private boolean prompt() { boolean answer = false; try { boolean inputOk = false; while (!inputOk) { System.out.print("Y / N : "); String input = reader.readLine(); if (input.equalsIgnoreCase("y")) { inputOk = true; answer = true; } else if (input.equalsIgnoreCase("n")) { inputOk = true; answer = false; } else { System.out.println("Ohh come on. Even Mr. Bean knows where are 'y' and 'n' in the keyboard?? Please try again:"); } } } catch (IOException e) { e.printStackTrace(); System.exit(-1); } return answer; } private int getNextGuess() throws IOException { boolean inputOk = false; int number = 0; String input = null; while (!inputOk) { try { System.out.print("Please guess the secret number: "); input = reader.readLine(); number = Integer.parseInt(input); if (number >= 1 && number <= 100) { inputOk = true; } else { System.out.println("Really? You didn't read the rules boy. Your number is not between 1 and 100 (" + number + ")."); } } catch (NumberFormatException e) { System.out.println("Invalid input (" + input + ")"); } } return number; } } ``` ## 玩 HiLo 游戏 现在，游戏已准备就绪。 播放吧。 ```java package hilo; import java.io.IOException; public class PlayGame { public static void main(String[] args) { HiLo hiLo = new HiLo(); try { hiLo.start(); } catch (IOException e) { e.printStackTrace(); } } } Output: Want to play the game of Hi and Lo?? Y / N : y Only 2 Rules: 1) Guess the secret number in maximum 6 tries. 2) The secret number is an integer between 1 and 100, inclusive. Please guess the secret number: 40 LO Please guess the secret number: 60 LO Please guess the secret number: 80 HI Please guess the secret number: 70 LO Please guess the secret number: 75 LO Please guess the secret number: 77 HI Sorry, you didn't guess the right number in six attempts. In other two words, YOU LOST !!!! The secret number was 76 ``` 希望您喜欢这个游戏。 **祝您学习愉快！**