package Lesson5_6.HomeWork;

import java.util.Arrays;
import java.util.Scanner;

public class ArraysAndMethods0 {
    public static void main(String[] args) {

        boolean[] boleans = new boolean[30];

        double[] nums = {10.2, 5.6, 7.8, 11.9};

        int[] array = new int[5];
        int i = array.length;
        System.out.println(i);
        //5

        System.out.println(Arrays.toString(array));
        //[0, 0, 0, 0, 0]
        Arrays.fill(array, 42);
        System.out.println(Arrays.toString(array));
        //[42, 42, 42, 42, 42]

        Arrays.sort(array);
        System.out.println(Arrays.toString(array));


        int[] array1 = {1, 2, 3, 0, -3, 2, 1, 10, -13};
        for (int a = 0; a < array1.length; a++) {
            if (array1[a] > 0) {
                System.out.print(a + " ");
            }
//0 1 2 5 6 7
        }
        System.out.println();

        int[] array2 = {1, 2, 3, 0, -3, 2, 1, 10, -13};

        for (int b : array2) {
            if (b > 0)
                System.out.print(b + " "); //1 2 3 2 1 10
        }
        System.out.println();

        for (int c = array2.length - 1; c >= 0; c--) {
            if (array2[c] > 0) {
                System.out.print(array2[c] + " ");
            } //10 1 2 3 2 1

        }

        System.out.println(); //Methods

        Scanner num = new Scanner(System.in);
        System.out.println("Enter your age to see are you a human:");
        int age = num.nextInt();
        System.out.println(isAge(age));

        //Enter your age to see are you a human:
        //1111
        //false
        // Enter your age to see are you a human:
        //10


        System.out.println("Enter your number from : ");
        int from = num.nextInt();
        System.out.println("Enter your number to : ");
        int to = num.nextInt();
        System.out.println("Numbers sum is: " + rangeSum(from, to));


        //trueEnter your number from :
        //1
        //Enter your number to :
        //5
        //15

        System.out.println("Enter your number from to start count: ");
        from = num.nextInt();
        System.out.println("Enter your number to : ");
        to = num.nextInt();
        System.out.println("Evens Numbers are: ");
        printEvens(from, to);


//Enter your number from to start count:
//2
//Enter your number to :
//7
//Evens Numbers are:
//2 4 6
        System.out.println();

        Scanner text = new Scanner(System.in);
        System.out.println("Enter your text: ");
        String s = text.nextLine();
        System.out.println(" Last char in your text is: " + lastChar(s));


        //Enter your text:
        //number one
        // Last char in your text is: e

    }
//Methods

    public static int sum(int d, int g) {
        int sum = d + g;
        return sum;
    }

    public static boolean isAge(int age) {

        if (age > 0 && age <= 120) {
            return true;
        } else {
            return false;
        }
    }


    public static int rangeSum(int from, int to) {
        int sumFromTo = 0;

        if (from > to) {
            throw new IllegalArgumentException("The first number bigger than the second");
        } else {
            for (int g = from; g <= to; g++) {
                sumFromTo += g;
            }
            // sumFromTo=+to;
        }
        return sumFromTo;
    }

    public static void printEvens(int from, int to) {
        if (from > to) {
            throw new IllegalArgumentException("The first number bigger than the second");
        } else {
            for (int r = from; r <= to; r++) {
                if (r % 2 == 0) {
                    System.out.print(r +" ");
                }
            }
        }
    }


    public static char lastChar(String s){

        int e = s.length();

        if (e == 0) {
            throw new IllegalArgumentException("Enter your text! ");
        } else {
            char lastChar = s.charAt(s.length() - 1);
            return lastChar;
        }
    }

}