Test1Seasоn5V1

import java.util.Random;
import java.util.Scanner;

public class Test1Season05 {

    public static void main(String[] args) {

        Task01();

        Task02();

        Task03();

        Task04();

    }

    static void Task01() {

        System.out.println("------ TASK01 -----");

        Random rn = new Random();

        int heads = 0;

        int tries = 0;

        while (heads < 5) {

            ++tries;

            int number = rn.nextInt(2); // 0   Tails, 1   Heads

            if (number == 1) {
                ++heads;
            } else {
                heads = 0;
            }
        }

        System.out.println("Number of tries: " + tries);
    }

    static void Task02() {

        System.out.println("------ TASK02 -----");

//      Scanner sc = new Scanner(System.in);
//
//      String str = sc.nextLine();

        String str = "Write a method that takes a String variable that holds some text The text contains words that are separated by a single space The method must return the most frequent word from the text";

        System.out.println(mostFrequentWord(str));
    }

    static String mostFrequentWord(String str) {
        String[] words = str.split(" ");

        int counter = 1;
        int maxCounter = 1;

        String res = "";

        for (int i = 0; i < words.length; i++) {
            counter = 1;

            for (int j = i + 1; j < words.length; j++) {
                if (words[i].equals(words[j])) {
                    ++counter;
                }
            }

            if (counter > maxCounter) {
                maxCounter = counter;
                res = words[i];
            }
        }

        return res;
    }

    static void Task03() {

        System.out.println("------ TASK03 -----");

        int[] arr = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

        System.out.println(subtraction(arr, 1, arr[0], arr[0]));
    }

    static int subtraction(int[] arr, int index, int min, int max) {
        if (index == arr.length) {
            return max - min;
        }

        if (arr[index] < min) {
            min = arr[index];
        }

        if (arr[index] > max) {
            max = arr[index];
        }


        return subtraction(arr, index + 1, min, max);
    }

    static void Task04() {

        System.out.println("------ TASK04 -----");

        char[][] matrix = {
                { 'b', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { 'b', 'b', 'b', 'b', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', 'b', 'b', '-', '-', '-', '-', 'b', 'b', 'b' },
                { '-', '-', '-', '-', 'b', 'b', '-', '-', 'b', 'b', '-', '-' },
                { '-', '-', '-', '-', '-', 'b', 'b', 'b', 'b', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
                { '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-', '-' },
            };

        int x, y;
        x = 1;
        y = 6;

        matrix[x][y] = 'x';

        gas(matrix, x, y);

        printMatrix(matrix);

    }

    static void gas(char[][] matrix, int row, int col) {

        if (matrix[row][col] != 'x') {
            matrix[row][col] = 'r';
        }

        for (int i = -1; i < 2; i++) {
            for (int j = -1; j < 2; j++) {
                    if (row + i >= 0 && row + i < matrix.length &&
                            col + j >= 0 && col + j < matrix[0].length &&
                            matrix[row + i][col + j] == '-') {

                        gas(matrix, row + i, col + j);
                    }
            }
        }
    }

    static void printMatrix(char[][] matrix) {
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[i].length; j++) {
                System.out.print(matrix[i][j] + " ");
            }

            System.out.println();
        }
    }
}