Main.java

package com.company;
import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;


public class Main {

    private static Scanner scanner = new Scanner(System.in);
    public static final String ANSI_RESET = "\u001B[0m";
    public static final String ANSI_YELLOW = "\u001B[43m";
    public static final String ANSI_GREEN = "\u001B[42m";
    public static final String ANSI_RED = "\u001B[41m";

    public static void main(String[] args) {

        System.out.println(ANSI_GREEN + "Welcome to Java-Wordle!" + ANSI_RESET);
        System.out.println("The purpose of the game is to guess a 5-letter word.");
        System.out.println("If a letter in your guess is correct, it will appear green.");
        System.out.println("If it is incorrect, it will appear red.");
        System.out.println("If the letter is in the word but not in the right place, it will appear yellow.");
        System.out.println("");

        //Defining some variables for game play. "count" tracks number of attempts. "flag" marks whether it is a win or loss.
        int count = 6;
        int flag = 0;

        String answer = answerRandomizer();

        do {
            char[] answerArray = answer.toCharArray();
            System.out.println("You have " + count + " more tries. Enter your" +
                    " 5-letter guess: \r");
            String guess = scanner.nextLine();
            guess = guess.toUpperCase();

            // Convert the guess into an array with each letter represented as a char variable.
            char[] guessArray = guess.toCharArray();

            //This is where I would like to add a dictionary to
            // also check if words are valid.
            if (!validateGuess(guessArray)){
                do{
                    System.out.println("Invalid guess. Enter a 5 letter word.");
                    guess = scanner.nextLine();
                    guess = guess.toUpperCase();
                    guessArray = guess.toCharArray();
                }while (!validateGuess(guessArray));
            }

            count-=1;

            //Check whether the guess is equal to the answer.
            if (answer.equalsIgnoreCase(guess)) {
                count=0;
                flag=1;
            }else {

                //Find correct/green letters. DecoyArray will allow us to
                // cross letters off as they are
                // found.
                char[] decoyArray = guess.toCharArray();
                for (int x = 0; x < 5; x++) {
                    if (answerArray[x] == guessArray[x]) {
                        decoyArray[x] = '#';
                        answerArray[x] = '$';
                    }
                }

                //Find misplaced/yellow letters. 
                for (int x = 0; x < 5; x++) {
                    for (int y = 4; y > -1; y--) {
                        if (decoyArray[y] == answerArray[x]) {
                            decoyArray[y] = '@';
                            answerArray[x] = '$';
                        }
                    }
                }

                //Print letters with correct color backgrounds. 
                for (int x = 0; x < 5; x++) {
                    if (decoyArray[x] == '#') {
                        System.out.print(ANSI_GREEN + " " + guessArray[x] + " " + ANSI_RESET + " ");
                    } else if (decoyArray[x] == '@') {
                        System.out.print(ANSI_YELLOW + " " + guessArray[x] + " " + ANSI_RESET + " ");
                    } else {
                        System.out.print(ANSI_RED + " " + guessArray[x] + " " + ANSI_RESET + " ");
                    }

                }
            }

        }while (count>0);
        if (flag == 0){
            System.out.println("You are out of tries. The answer was " + answer + ".");
        }
        else if (flag>0) {
            System.out.println(ANSI_GREEN + " " + answer + " " + ANSI_RESET + " ");
            System.out.println("Congratulations! You win.");
        }



    }

        private static boolean validateGuess(char[] guessArray){
            if (guessArray.length!=5){
                return false;
            }
            for (int i = 0; i < guessArray.length; i++) {
                if (!(guessArray[i] >= 'A' && guessArray[i] <= 'Z')) {
                return false;
                }
            }
            return true;
        }

        private static String answerRandomizer(){
            //create an array of possible answers:
            String [] answerBlock  = {"CYBER", "BYTES", "ARRAY", "SWITCH", "WHILE", "LOOPS", "SCOPE", "FILES", "CODES",
                    "ERROR", "MODEM", "MOUSE", "BASIC", "BLOCK", "CACHE", "CLICK", "CLOSE", "CRASH", "DEBUG",
                    "EMAIL", "ERASE", "TABLE", "VIRUS", "RESET", "WRITE", "LOOPS"};
            //randomly assign an answer word
            Random random = new Random();
            return answerBlock[random.nextInt(25)];
        }


}