import java.io.*;
import java.util.Scanner;
import java.util.Random;
public class LoopsRandom
{
        public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int input1;
        int max;
        //int input2;
        //coin toss
        do {
        headsOrTails(); //calls method A
        System.out.println("Enter \"1\" to return or \"2\" to continue: ");
        input1 = input.nextInt();
        while (input1 > 2 || input1 < 1) { //error message
            System.out.println("Invalid input");
            System.out.println("Enter \"1\" to return or \"2\" to continue: ");
            input1 = input.nextInt();
        }
        } while (input1 == 1); //loops based on user input

        //random range
        do {
        System.out.println("Enter the minimum value: "); //user input range values
        int min = input.nextInt();
        System.out.println("Enter the maximum value: ");
        max = input.nextInt();
        randomInRange(min, max); //calls method B

        System.out.println("Enter \"1\" to return or \"2\" to continue: ");
        input1 = input.nextInt();
        while (input1 > 2 || input1 < 1) { //error message
            System.out.println("Invalid input");
            System.out.println("Enter \"1\" to return or \"2\" to continue: ");
            input1 = input.nextInt();
        }
        } while (input1 == 1); //loops based on user input

        System.out.println("Guess the value between 0 and " + max + ", or enter any negative number to quit.");

        guessingGame(max); //calls method C

    }
    public static void headsOrTails() { //method A
        Scanner input = new Scanner(System.in);
        System.out.println("Flipping coin... ");
            Random r = new Random();
            int i = r.nextInt(2); //heads or tails
            String toss;
            if (i == 00) { //heads
                toss = "heads";
            }
            else { //tails
                toss = "tails";
            }
        System.out.println("The result of the coin toss is: " + toss);
    }
    public static void randomInRange(int min, int max) { //method B

          //random within the range of int min - int max
          Random r = new Random();
          int rand = r.nextInt((max - min) + 1) + min; //random within range
          System.out.println("A random number between " + min + " and " + max +" is: " + rand);
    }
    public static void guessingGame(int max) { //method C
        Scanner input = new Scanner(System.in);
        Random r = new Random();
        int rand = r.nextInt((max) + 1); //random between 0 and max
        int guessCount = 1;
        //System.out.println(max + "(max value)");
        System.out.println("(" + rand + " is the correct answer)"); //cheat so we know it's working
        int guess;


        while ((guess = input.nextInt()) != rand && guess >= 0) { //loop to prompt guess until user input is correct/negative


        if (guess > rand) { //lower guess
            System.out.println("Incorrect, guess lower.");
        }

        else if (guess < rand && guess >= 0) { //higher guess
            System.out.println("Incorrect, guess higher.");
        }
        guessCount++; //increases count
        }
        if (guess == rand) { //correct guess
            System.out.println("Correct! You made " + guessCount + " guesses.");
        }
        else if (guess < 0) {
        System.out.println("(exiting)"); //unnecessary line so i know the code works
        }
    }
}