import java.util.Scanner; public class Mastermind { public static void main(String[] args) { printInstructions(); int[] gameList = createCompList(); int totalGuesses = 0; while (totalGuesses < 5) { System.out.println("Guesses remaining: " + (5 - totalGuesses)); int[] userInput = getGuess(); if (checkValues(gameList,userInput) == 4) { break; } totalGuesses ++; } if (totalGuesses == 5) { System.out.println("Sorry! That's all the guesses you get!"); System.out.println("This is the correct answer:"); for (int i = 0; i < gameList.length; i++) { System.out.print(gameList[i] + " "); } } System.out.println(); System.out.println("Thanks for Playing!"); } public static int[] getGuess() { Scanner input = new Scanner(System.in); while (true){ System.out.println("Enter 4 numbers as guesses: "); String userInput = input.nextLine(); int[] userList = new int[4]; for (int i = 0; i < 4; i++){ userList[i] = Integer.parseInt(userInput.substring(i,i+1)); } if (userInput.length() != 4) { System.out.println("Your guess must consist of 4 numbers!"); continue; } boolean illegalNum = false; for (int i = 0; i < userList.length; i++){ if (userList[i] > 7 || userList[i] < 1){ illegalNum = true; } } if (illegalNum){ System.out.println("You can only use numbers 1-7 as guesses!"); continue; } boolean duplicate = false; for (int i = 0; i < userList.length - 1; i++){ for (int j = i+1; j < userList.length; j++) { if (userList[i] == userList[j]){ duplicate = true; } } } if (duplicate){ System.out.println("You can only use each number once!"); continue; } return userList; } } public static int checkValues(int[] numArray, int[] guesses) { String[] response = new String[4]; for (int i = 0; i < numArray.length; i++){ int indexValue = searchArray(numArray,guesses[i]); if (indexValue == i){ response[i] = "RED"; } else if (indexValue == -1){ response[i] = "BLACK"; } else{ response[i] = "WHITE"; } } response = shuffle(response); for (int i = 0; i < response.length; i ++) { System.out.print(response[i] + " "); } System.out.println(); return (checkWin(response)); } public static int searchArray(int[] nums, int value) { for (int i = 0; i < nums.length; i++){ if (nums[i] == value) { return i; } } return -1; } public static String[] shuffle(String[] values) { for (int i = 0; i < values.length; i++) { int ranIndex = (int)(Math.random() * 4); String temp = values[ranIndex]; values[ranIndex] = values[i]; values[i] = temp; } return values; } public static int checkWin(String[] responseList) { int win = 0; for (int i = 0; i < 4; i++) { if (responseList[i].equals("RED")) { win += 1; } } if (win == 4) { System.out.println("Congrats! You got it!!"); } return win; } public static int[] createCompList(){ int[] gameList = new int[4]; int valid = 0; while (valid < 4) { int randomNum = (int)(Math.random() * 7) + 1; if (searchArray(gameList, randomNum) == -1) { gameList[valid] = randomNum; valid ++; } } return gameList; } public static void printInstructions() { // Print game directions to the user System.out.println("Hello, and welcome to MasterMind!"); System.out.println("-----------------------------------------------------------------------"); System.out.println("Your goal is to successfully guess four numbers ranging from 1-7 in the" ); System.out.println("correct order. My secret numbers will be a set of four different values."); System.out.println("-----------------------------------------------------------------------"); System.out.println("Each time you make a guess, I will give a color response of three options:"); System.out.println("BLACK, RED, WHITE"); System.out.println("BLACK = A number you guessed isn't one of the secret numbers."); System.out.println("WHITE = A number you guessed IS one of the secret numbers, but not in the PLACE where you guessed it"); System.out.println("RED = A number you guessed IS one of the secret numbers, and IS where you guessed it."); System.out.println("The order of the colors is random. So even if you see RED in the third spot, it does NOT"); System.out.println("mean that your third guess is in the correct place."); System.out.println("-----------------------------------------------------------------------"); System.out.println("For example, my secret numbers are 4326."); System.out.println("For your guess, you might say four numbers: 3671."); System.out.println("You guessed two of the numbers correctly, but in the wrong order!"); System.out.println("My reponse would be 'White' 'White' 'Black' 'Black'"); System.out.println("Which indicates that you got two numbers correct, but not in the right"); System.out.println("locations."); System.out.println("----------------------------------------------------------------------"); System.out.println("If you had guessed 7316, my response would be" ); System.out.println("'Red' 'Red' 'Black' 'Black'"); System.out.println("indicating that you guessed two numbers correct and in the right place,"); System.out.println("and two incorrect numbers."); System.out.println("----------------------------------------------------------------------"); System.out.println("Let's play!"); } }