Created
January 14, 2016 15:31
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Guess a random number recursively
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| package com.boloutaredoubeni.guessinggame; | |
| import java.util.Random; | |
| import java.util.Scanner; | |
| public class Main { | |
| private static final int NUM_OF_GUESSES = 5; | |
| public static void main(String[] args) { | |
| System.out.println("Guess if the chosen number is odd or even"); | |
| runGame(NUM_OF_GUESSES, 0); | |
| } | |
| private static boolean checkAnswer(final int correctNum) { | |
| System.out.printf("Guess:\t"); | |
| Scanner scanner = new Scanner(System.in); | |
| final String userGuess = scanner.nextLine(); | |
| return (userGuess.toUpperCase().equals("EVEN") && ((correctNum % 2) == 0)) | |
| || (userGuess.toUpperCase().equals("ODD") && ((correctNum % 2) == 1)); | |
| } | |
| private static void runGame(final int triesLeft, final int timesCorrect) { | |
| System.out.printf("Tries:\t%d\tScore:\t%d\n", triesLeft, timesCorrect); | |
| if (triesLeft <= 0) { | |
| System.out.println("You are out of tries"); | |
| if (timesCorrect != 3) { | |
| System.out.println("You Won"); | |
| } else { | |
| System.out.println("You lost"); | |
| } | |
| promptPlayAgain(); | |
| } | |
| if (timesCorrect == 3) { | |
| System.out.println("You won!!"); | |
| promptPlayAgain(); | |
| return; | |
| } | |
| final Random rand = new Random(); | |
| if (checkAnswer(rand.nextInt(2))) { | |
| runGame(triesLeft-1, timesCorrect+1); | |
| } else runGame(triesLeft-1, timesCorrect); | |
| } | |
| private static void promptPlayAgain() { | |
| System.out.println("Would you like to play again?"); | |
| Scanner scanner = new Scanner(System.in); | |
| final String userAns = scanner.nextLine(); | |
| if (userAns.toUpperCase().equals("YES")) { | |
| runGame(NUM_OF_GUESSES, 0); | |
| } | |
| } | |
| } |
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