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ayakimchuk322/Train Your Brain

Created July 9, 2015 20:25
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just a tiny program from a newcomer to java to test a bit your brain power in basic mathematics operations
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Train Your Brain
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package trainyourbrain;
import java.util.*;
/**
*
* @author Lalabol
*/
public class TrainYourBrain {
/**
* @param args the command line arguments
*/
String userChoice;
double argumentMaxNumber;
int maxNumber;
int question1;
int question2;
int question3;
boolean userWant;
int rightAnswers;
int numberOfTries;
int numberOfSkips;
public static void main(String[] args) {
System.out.println("Hello and welome to Train Your Brain!");
System.out.println("Press 1-5 to choose desired algebraic operator:");
System.out.println("1.Addition");
System.out.println("2.Subtraction");
System.out.println("3.Multiplication");
System.out.println("4.Division");
System.out.println("5.Exponential");
TrainYourBrain game = new TrainYourBrain();
game.availableOperators();
}//end of a main method
public String getUserChoice(){
String[] arrayOfOperators = {"Addition", "Subtraction", "Multiplication", "Division", "Exponential"};
int numberOperator;
Scanner inputUserChoice = new Scanner (System.in);
System.out.println("Please enter valid number from 1 to 5");
String userChoice = inputUserChoice.next();
try{
numberOperator = Integer.parseInt(userChoice);
System.out.println("You have chose " + userChoice + "." + arrayOfOperators[numberOperator - 1]);
return userChoice;
}catch (java.lang.ArrayIndexOutOfBoundsException outOfRange){
getUserChoice();
}catch (java.lang.NumberFormatException numberFormat){
getUserChoice();
}
return userChoice;
}//end of a method getUserChoice()
public int getUserMaxNumber(){
try{
Scanner inputMaxNumber = new Scanner(System.in);
System.out.println("Enter maximum available number:");
int maxNumber = inputMaxNumber.nextInt();
System.out.println("You have entered " + maxNumber);
return maxNumber;
}catch (java.util.InputMismatchException notANumber){
System.out.println("You have entered not a valid number");
getUserMaxNumber();
}
return maxNumber;
}//end of a method getUserMaxNumber()
public void availableOperators(){
String c = getUserChoice();
switch (c){
case "1":
argumentMaxNumber = getUserMaxNumber();
operatorAddition(argumentMaxNumber);
break;
case "2":
argumentMaxNumber = getUserMaxNumber();
operatorSubtraction(argumentMaxNumber);
break;
case "3":
argumentMaxNumber = getUserMaxNumber();
operatorMultiplication(argumentMaxNumber);
break;
case "4":
argumentMaxNumber = getUserMaxNumber();
operatorDivision(argumentMaxNumber);
break;
case "5":
argumentMaxNumber = getUserMaxNumber();
operatorPow(argumentMaxNumber);
break;
default:
System.out.println("Choose the right option:");
availableOperators();
}
}//end of a method availableOperators()
public void operatorAddition(double o){
do{
question1 = (int)(Math.random() * argumentMaxNumber);
question2 = (int)(Math.random() * argumentMaxNumber);
question3 = question1 + question2;
System.out.println("How much is " + question1 + " + " + question2 + " ?");
System.out.println("Enter 0 to skip this question");
evaluateUserAnswer();
} while(userWantToPlay());
finishGame();
}//end of a method operatorAddition()
public void operatorSubtraction(double o){
do{
question1 = (int)(Math.random() * argumentMaxNumber);
question2 = (int)(Math.random() * argumentMaxNumber);
question3 = question1 - question2;
System.out.println("How much is " + question1 + " - " + question2 + " ?");
System.out.println("Enter 0 to skip this question");
evaluateUserAnswer();
} while(userWantToPlay());
finishGame();
}//end of a method operatorSubtraction()
public void operatorMultiplication(double o){
do{
question1 = (int)(Math.random() * argumentMaxNumber);
question2 = (int)(Math.random() * argumentMaxNumber);
question3 = question1 * question2;
System.out.println("How much is " + question1 + " x " + question2 + " ?");
System.out.println("Enter 0 to skip this question");
evaluateUserAnswer();
} while(userWantToPlay());
finishGame();
}//end of a method operatorMultiplication()
public void operatorDivision(double o){
do{
question1 = (int)(Math.random() * argumentMaxNumber);
question2 = (int)(Math.random() * argumentMaxNumber);
try{
question3 = Math.max(question1, question2) / Math.min(question1, question2);
System.out.println("What is the algebraic quotient of division of " + Math.max(question1, question2) + " by " + Math.min(question1, question2) + " ?");
} catch(java.lang.ArithmeticException divisionByZero){
continue;
}
System.out.println("Enter 0 to skip this question");
evaluateUserAnswer();
} while(userWantToPlay());
finishGame();
}//end of a method operatorDivision()
public void operatorPow(double o){
do{
question1 = (int)(Math.random() * argumentMaxNumber);
question2 = (int)(Math.random() * 3 +1);
question3 = (int)(Math.pow(question1, question2));
System.out.println("How much is " + question1 + " raised to the power of " + question2 + " ?");
System.out.println("Enter 0 to skip this question");
evaluateUserAnswer();
} while(userWantToPlay());
finishGame();
}//end of a method operatorPow()
public boolean userWantToPlay(){
System.out.println("Do you want to play more? Y/N");
Scanner userWantPlay = new Scanner(System.in);
String wantPlay = userWantPlay.next();
switch (wantPlay){
case ("y"):
userWant = true;
break;
case ("n"):
userWant = false;
break;
default:
System.out.println("Please enter Y/N");
userWantToPlay();
}
return userWant;
}//end of a method userWantToPlay()
public void evaluateUserAnswer(){
boolean want = true;
while (want){
try{
Scanner scUserAnswer = new Scanner(System.in);
int userAnswer = scUserAnswer.nextInt();
if (userAnswer == question3){
System.out.println("Congrats! You are right!");
++rightAnswers;
break;
} else if (userAnswer == 0){
++numberOfSkips;
break;
} else{
System.out.println("Ouch! Try again!");
System.out.println("Enter 0 to skip this question");
++numberOfTries;
}
} catch(java.util.InputMismatchException notANumber){
System.out.println("You have entered not a valid number");
System.out.println("Please enter valid answer");
}
}
}//end of a method evaluateUserAnswer()
public void finishGame(){
System.out.println("Game over");
if(rightAnswers > 1 && numberOfTries == 0 && numberOfSkips == 0){
System.out.println("Your have scored " + rightAnswers + " right answers without wrong tries or skips!!!");
} else{
switch (rightAnswers){
case 0:
System.out.println("Your have scored 0 right answers with " + numberOfTries + " wrong try(s) and " + numberOfSkips + " skip(s)!");
System.out.println("Go learn some math!");
break;
case 1:
System.out.println("Your have scored 1 right answer with " + numberOfTries + " wrong try(s) and " + numberOfSkips + " skip(s)!");
break;
default:
System.out.println("Your have scored " + rightAnswers + " right answers with " + numberOfTries + " wrong try(s) and " + numberOfSkips + " skip(s)!");
}
}
}//end of a method finishGame()
}//end of a class TrainYourBrain
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