package examples;

import java.util.Scanner;

public class Examples {

static Scanner sc = new Scanner(System.in);

public static void main(String[] args) {

bestFriends();

}

static double planetWeight(String planet, double weight) {

// ex 7

planet = planet.toLowerCase();

switch (planet) {

case "venus":

weight = weight * 0.78;

break;

case "mars":

weight = weight * 0.39;

break;

case "jupiter":

weight = weight * 2.65;

break;

case "saturn":

weight = weight * 1.17;

break;

case "uranus":

weight = weight * 1.05;

break;

case "neptune":

weight = weight * 1.23;

break;

}

return weight;

}

public static void findTheDay() {

// Control Flow exercise 8

System.out.println("Give me a Number");

int numberOfDays = sc.nextInt();

switch (numberOfDays % 7) {

case 0:

System.out.println("Saturday");

break;

case 1:

System.out.println("Sunday");

break;

case 2:

System.out.println("Monday");

break;

case 3:

System.out.println("Tuesday");

break;

case 4:

System.out.println("Wednesday");

break;

case 5:

System.out.println("Thursday");

break;

case 6:

System.out.println("Friday");

break;

}

}

public static void divBy3() {

// some math 3

System.out.println("Give me a number to check if it be divided by 3");

int number = sc.nextInt();

if (number % 3 == 0) {

System.out.println("It can");

} else {

System.out.println("it can not");

}

}

public static void findAge() {

// some math 1

System.out.println("Give me your Age");

int age = sc.nextInt();

int bornYear = 2019 - age;

System.out.println(bornYear);

int year1960 = 1960 - bornYear;

int year2040 = 2019 + age;

System.out.println((year1960 > 0) ? "You were " + year1960 + " years old" : "You were born after 1960");

System.out.println("2040 " + year2040);

}

public static void salary() {

// some math ex2

double salaryM = 900;

double salaryY = (900 * 0.9) * 12;

double salaryYG = (900 - 900 * 0.9) * 12;

System.out.println("The amount of money that go in your pocker every year: " + salaryY + " What goverment takes: " + salaryYG);

}

public static void findTheClass() {

// Control flow 1

System.out.println("Give me your age");

int age = sc.nextInt();

if (age < 7) {

System.out.println("πολυ μικρος για να πας Σχολειο");

} else if (age < 13) {

switch (age) {

case 7:

System.out.println("A δημοτικου");

break;

case 8:

System.out.println("B δημοτικου");

break;

case 9:

System.out.println("Γ δημοτικου");

break;

case 10:

System.out.println("Δ δημοτικου");

break;

case 11:

System.out.println("Ε δημοτικου");

break;

case 12:

System.out.println("ΣΤ δημοτικου");

break;

}

} else if (age < 16) {

switch (age) {

case 13:

System.out.println("A γυμνασιου");

break;

case 14:

System.out.println("B γυμνασιου");

break;

case 15:

System.out.println("Γ γυμνασιου");

break;

}

} else if (age < 19) {

switch (age) {

case 16:

System.out.println("A λυκειου");

break;

case 17:

System.out.println("B λυκειου");

break;

case 18:

System.out.println("Γ λυκειου");

break;

}

} else {

System.out.println("Πολυ μεγαλος για να πας σχολειο");

}

}

public static void everyDay() {

// control flow 2

System.out.println("write yes is its working day and no if its not");

String workingDay = sc.next();

switch (workingDay) {

case "yes":

System.out.println("Do a bath. Brush your teeth find clean clothes and get ready to go to work");

break;

case "no":

System.out.println("Do whatever you like and stop asking a computer what to do.");

break;

default:

System.out.println("i told you yes or no ");

}

}

public static void whatSeason() {

// control flow 3

System.out.println("Write the month");

String month = sc.next();

switch (month) {

case "january":

case "february":

case "december":

System.out.println("Winter");

break;

case "march":

case "april":

case "may":

System.out.println("Spring");

break;

case "june":

case "july":

case "august":

System.out.println("Summer");

break;

case "september":

case "october":

case "november":

System.out.println("Autumnma");

break;

default:

System.out.println("Chinese calendar is not supported.");

}

}

public static void numberOfDays() {

// control flow

System.out.println("Give me the month");

String month = sc.next().toLowerCase();

switch (month) {

case "january":

case "december":

case "march":

case "may":

case "july":

case "august":

case "october":

System.out.println("31");

break;

case "april":

case "june":

case "september":

case "november":

System.out.println("30");

break;

case "february":

System.out.println("28");

break;

}

}

public static void grade() {

// ex 5

System.out.println("What was your grade?");

String grade = sc.next().toLowerCase();

switch (grade) {

case "a":

System.out.println("Perfect");

break;

case "b":

System.out.println("Good");

break;

case "c":

case "d":

System.out.println("Pass");

break;

default:

System.out.println("Fail");

break;

}

}

public static void driveAge() {

System.out.println("How old are you?");

int age = sc.nextInt();

age = Math.abs(age);

if (age < 16) {

System.out.println("You cannot drive");

} else if (age < 17) {

System.out.println("You can drive but not vote");

} else if (age < 21) {

System.out.println("You can vote but not drink");

} else {

System.out.println("You can do anything");

}

}

public static void sumMinMax() {

// loop ex 2

int[] array = {3, 4, 5, 8, 1};

int sum = 0;

int max = array[0];

int min = array[0];

for (int i = 0; i < 5; i++) {

sum = sum + array[i];

if (max < array[i]) {

max = array[i];

}

if (min > array[i]) {

min = array[i];

}

}

double avarage = (double) sum / 5;

System.out.println("Sum =" + sum + " Min =" + min + " Max =" + max + " Avarage =" + avarage);

}

public static void bestFriends() {

//loop 2 ex

String[] array = new String[4];

for (int i = 0; i < 4; i++) {

array[i] = sc.next();

}

System.out.println("Your best friends are : " + array[0] + " " + array[1] + " " + array[2] + " " + array[3]);

}

public static void upperCase() {

//upperCase ex

System.out.println("Give me your first input");

String a = sc.next();

System.out.println("Now give me your second input");

String b = sc.next();

String upper = a.toUpperCase() + " " + b.toUpperCase();

System.out.println(upper);

}

}