Problem 2: Cows go M00! [15pt] A Kindergarden teacher wants to test her students

Question

Problem 2: Cows go M00! [15pt] A Kindergarden teacher wants to test her students to determine whether they know what sounds different animals make by asking them a question and giving them a series of pos- sibilities. For example a sample question is: Enter the sound that a duck makenquack.moo.ruff: She asks you to create a program which tests the students. The program must: Display a message and instructions on how to use the program . Have at least 10 different animals Must give the students 3 chances to get the question correct If they get it right then display a message (saying something positive) . If they exceed 3 tries give them the answer (providing positive support) Questions must be randomized (choose a random animal for each question) There must be three possible sounds to choose from (in a random order) Two of the incorrect sounds must be randomly chosen for each new question . Must repeat until quit is inputted as an answer. . Must output a message when done which includes the number of questions attempted and the percentage correct . All output should be formatted (neat and orderly) . All output must be age (0-10) appropriate Hint: the functions randiO and randperm) may be useful. Make sure to email your code to your lab instructor so that we can play your game. A sample output of the code is shown on the following page. LG

Explanation / Answer

import java.util.*; public class MainCLass { //Map of Animal Name to Sound private static HashMap animalSoundMap ; static ArrayList animalNameList = new ArrayList(); static ArrayList animalSoundList = new ArrayList(); static final String GAME_RULES ="Answer the question as best possible as possible type quit when finished"; static final String STRING_TO_QUIT_QUIZ = "quit"; static final String WRONG_ANSWER_TEXT ="*** Sorry. You Got it wrong"; static final String RIGHT_ANSWER_TEXT ="*** Correct! You Got it right!"; static final String TRY_AGAIN ="Try Again!"; static final String WRONG_ANSWER_AFTER_EXAUSTING_ATTEMPTS ="*** Sorry. No."; static String []QUESTION_FORMAT ={"A ",""," goes (" ,"",") :"}; static final String RESULT_BOUNDARY_LINE="=========================================="; static final String NUMBER_OF_QUESTIONS_STRING= "Number of Questions : "; static final String PERCENTAGE= "Percentage (%) : "; static final String[] CORRECT_ANSWER ={"A ",""," goes ","" }; public static void main(String[] args) { configureAnimalsSound(); System.out.println(GAME_RULES); Scanner scan = new Scanner(System.in); int numOfQuestionsAttempted=0; int numOfCorrectAnswers=0; Random randomNum = new Random(); int min =0; int max= 9; boolean isanyQuestionAttempted = false; String inputFromUser = ""; while(!hasUserQuit(inputFromUser)){ int questionNumber =min + randomNum.nextInt(max); int numOfWrongsAllowed = 3; String randomQuestion = createRandomQuestion(questionNumber); while(numOfWrongsAllowed >0){ System.out.print(randomQuestion); inputFromUser = scan.next(); if(inputFromUser.equalsIgnoreCase(STRING_TO_QUIT_QUIZ)){ break; } isanyQuestionAttempted = true; if(isAnswerCorrect(questionNumber,inputFromUser)){ System.out.println(RIGHT_ANSWER_TEXT); numOfCorrectAnswers++; break; }else if (numOfWrongsAllowed >1){ System.out.println(WRONG_ANSWER_TEXT +" "+TRY_AGAIN); }else{ CORRECT_ANSWER[1] = animalNameList.get(questionNumber); CORRECT_ANSWER[3] = animalSoundList.get(questionNumber); System.out.println(WRONG_ANSWER_TEXT +" "+Arrays.asList(CORRECT_ANSWER).toString()); } numOfWrongsAllowed--; } numOfQuestionsAttempted ++; } if(isanyQuestionAttempted){ System.out.println("No Questions attempted"); }else{ double percent = calculatePercentage(numOfCorrectAnswers,numOfQuestionsAttempted); System.out.println(getResult(numOfQuestionsAttempted,percent)); } } public static boolean isAnswerCorrect(int questionNumber, String answer){ return animalSoundList.get(questionNumber).equalsIgnoreCase(answer); } public static double calculatePercentage(int correctQuestionsCount, int totalQuestionsCount){ return (double) correctQuestionsCount/totalQuestionsCount * 100; } public static String getResult(int totalQuestionsAttempted, double perCentageForCorrect){ String result = new String(RESULT_BOUNDARY_LINE+" "); result = result.concat(NUMBER_OF_QUESTIONS_STRING+ totalQuestionsAttempted+" "); result = result.concat(PERCENTAGE+ perCentageForCorrect +" "); result = result.concat(" "+RESULT_BOUNDARY_LINE+" "); return result.toString(); } public static String pickAnyRandomAnimalSound(int index){ Random randomNum = new Random(); int answerIndex1 = 0+ randomNum.nextInt(9); while(answerIndex1 == index){ answerIndex1 = 0+ randomNum.nextInt(9); } int answerIndex2 = 0+ randomNum.nextInt(9); while (answerIndex2 == index || answerIndex2 == answerIndex1){ answerIndex2 = 0+ randomNum.nextInt(9); } Set optionsArraySet = new HashSet(); StringBuffer optionsList = new StringBuffer(""); optionsArraySet.add(animalSoundList.get(answerIndex1)); optionsArraySet.add(animalSoundList.get(index)); optionsArraySet.add(animalSoundList.get(answerIndex2)); for(String item : optionsArraySet){ optionsList = optionsList.append(item +"/"); } return optionsList.replace(optionsList.length()-1,optionsList.length(),"").toString(); } public static String createRandomQuestion(int index){ String animal = animalNameList.get(index); String optionsList = pickAnyRandomAnimalSound(index); return pickRandomAnimalAndSound(animal,optionsList); } public static String pickRandomAnimalAndSound(String animalName, String optionsList){ QUESTION_FORMAT[1] = animalName; QUESTION_FORMAT[3] = optionsList; String result = new String(); for(String item : Arrays.asList(QUESTION_FORMAT)){ result = result.concat(item); } return result; } public static boolean hasUserQuit(String inputFromUser ){ return inputFromUser.equalsIgnoreCase(STRING_TO_QUIT_QUIZ); } public static void configureAnimalsSound(){ //Add Animals animalNameList.add("cow"); animalSoundList.add("moo"); animalNameList.add("duck"); animalSoundList.add("quack"); animalNameList.add("dog"); animalSoundList.add("bark"); animalNameList.add("cat"); animalSoundList.add("meow"); animalNameList.add("donkey"); animalSoundList.add("hee-haw"); animalNameList.add("lion"); animalSoundList.add("roar"); animalNameList.add("deer"); animalSoundList.add("growl"); animalNameList.add("bee"); animalSoundList.add("buzz"); animalNameList.add("crow"); animalSoundList.add("cah"); animalNameList.add("pig"); animalSoundList.add("grunt"); } }

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