p106_107

import java.util.*;
import java.lang.Math.*;
public class Main {
    public static Scanner reader = new Scanner(System.in);
    public static void Q4() {
        System.out.println("Q4");
        System.out.println("Enter 2 sides of a right angle triangle: ");
        int n1 = reader.nextInt();
        int n2 = reader.nextInt();
        System.out.println("hypotenuse: " + Math.sqrt(Math.pow(n1, 2) + Math.pow(n2, 2)));
    }
    public static void Q5(){
        System.out.println("\nQ5");
        double ran1 = Math.random();
        double ran2 = Math.random();
        double ran3 = Math.random();
        System.out.println("the average of the numbers: " + (ran1 + ran2 + ran3) / 3);
    }
    public static void Q6(){
        System.out.println("\nQ6");
        System.out.println("Enter 3 sides of triangle: ");
        int a = reader.nextInt();
        int b = reader.nextInt();
        int c = reader.nextInt();
        double p = (a + b + c) / 2.0;
        System.out.println("area: " + Math.sqrt(p * (p - a) * (p - b) * (p - c)));
        System.out.println("circumference: " + a + b + c);
    }
    public static void Q7(){
        System.out.println("\nQ7");
        System.out.println("Insert money: ");
        double num = reader.nextDouble();
        System.out.println("shekels: " + Math.floor(num) + ", pennies: " + (num * 100) % 100 / 100);
    }
    public static void Q8(){
        System.out.println("\nQ8");
        System.out.println("Enter triple digits number: ");
        int num = reader.nextInt();
        if ((Math.pow(num % 10, 3) + Math.pow((num / 10) % 10, 3) + Math.pow(num / 100, 3)) == num)
            System.out.println("a triple number");
        else
            System.out.println("not a triple number");
    }
    public static void Q9(){
        System.out.println("\nQ9");
        System.out.println("Enter a grade: ");
        double grade = reader.nextDouble();
        System.out.println("grade: " + Math.round(grade) + ", the saved part: " + (grade * 10) % 10 / 10);
    }
    public static void Q10(){
        System.out.println("\nQ10");
        System.out.println("Enter a number with 3 digits after the dot: ");
        double num = reader.nextDouble();
        System.out.println("rounded number: " + (Math.round(num * 10) / 10.0));
    }
    public static void Q11(){
        System.out.println("\nQ11");
        System.out.println("Enter a number: ");
        int num = reader.nextInt();
        System.out.println("result: " + (num/Math.abs(num)));
    }
    public static void Q13(){
        System.out.println("\nQ13");
        System.out.println("Enter a number: ");
        int guess = reader.nextInt();
        int roll = (int)(Math.random()*6);
        System.out.println("your guess: " + guess + ", the roll: " + roll);
        if (roll == guess)
            System.out.println("you were right!");
        else
            System.out.println("you missed by " + Math.abs(guess - roll));
    }

    public static void main(String[] args) {
        Q4(); Q5(); Q6(); Q7(); Q8(); Q9(); Q10(); Q11(); Q13();
    }
}