admin.java

import java.util.*;

public class admin {
  private Random rand = new Random();
  static ArrayList<String> trivia = new ArrayList<String>();// Will be unedited just to access the questions.txt
  private final int row = 10;
  private final int col = 5;
  private String[][] game = new String[row][col];

  public admin() {
  }

  public void addQandA(String q, String ca, String wa1, String wa2, String wa3) {// adds the questions and answers from game class into the arraylist
    trivia.add(q);
    trivia.add(ca);
    trivia.add(wa1);
    trivia.add(wa2);
    trivia.add(wa3);
  }

  public int databaseSize() {
    return trivia.size() / 5;
  }

  public String displayQuestion(int n) {
    return trivia.get(n * 5);
  }

  public String displayCorAns(int n) {
    return trivia.get((n * 5) + 1);
  }

  public String displayWrongOne(int n) {
    return trivia.get((n * 5) + 2);
  }

  public String displayWrongTwo(int n) {
    return trivia.get((n * 5) + 3);
  }

  public String displayWrongThree(int n) {
    return trivia.get((n * 5) + 4);
  }

  //removes a question and its answers with a user input of n
  public static void removeQuestion(int n) {
    trivia.remove(n * 5);
    trivia.remove(n * 5);
    trivia.remove(n * 5);
    trivia.remove(n * 5);
    trivia.remove(n * 5);
  }

  public void printDatabase(int i) {
    int questionNum = i + 1;
    System.out.println("Question " + questionNum + ":\n\tQuestion: " + this.displayQuestion(i));
    System.out.println("\tCorrect Answer: " + this.displayCorAns(i));
    System.out.println("\tWrong Answer 1: " + this.displayWrongOne(i));
    System.out.println("\tWrong Answer 2: " + this.displayWrongTwo(i));
    System.out.println("\tWrong Answer 3: " + this.displayWrongThree(i));
  }

  public static boolean isNumeric(String strNum) {
    try {
      Integer.parseInt(strNum);
    } catch (NumberFormatException | NullPointerException nfe) {
      return false;
    }
    return true;
  }

  public void createGame() {// takes 10 random question and answers from the array list and adds it to the 2 dim array
    for (int i = 0; i < row; i++) {
      game[i][0] = displayQuestion(i);
      game[i][1] = displayCorAns(i);
      game[i][2] = displayWrongOne(i);
      game[i][3] = displayWrongTwo(i);
      game[i][4] = displayWrongThree(i);
    }
  }

  public void randAnswers() {
    ArrayList<String> triviaTemp = new ArrayList<>(4);
    ArrayList<String> triviaTemp1 = new ArrayList<>();
    ArrayList<String> triviaTemp2 = (ArrayList<String>)trivia.clone();
    for (int i = 0; i < this.databaseSize(); i++) {
      //Shuffles answers
      triviaTemp.clear();
      triviaTemp.add(this.displayCorAns(i));
      triviaTemp.add(this.displayWrongOne(i));
      triviaTemp.add(this.displayWrongTwo(i));
      triviaTemp.add(this.displayWrongThree(i));

      Collections.shuffle(triviaTemp);

      triviaTemp1.add(triviaTemp.get(0));
      triviaTemp1.add(triviaTemp.get(1));
      triviaTemp1.add(triviaTemp.get(2));
      triviaTemp1.add(triviaTemp.get(3));

      triviaTemp2.set((i * 5) + 1, triviaTemp1.get(i * 4));
      triviaTemp2.set((i * 5) + 2, triviaTemp1.get(i * 4 + 1));
      triviaTemp2.set((i * 5) + 3, triviaTemp1.get(i * 4 + 2));
      triviaTemp2.set((i * 5) + 4, triviaTemp1.get(i * 4 + 3));
    }
    this.createGame();//creates 2 dim game array
  }

  public void display2dArray() {
    for (int row = 0; row < game.length; row++) {
      for (int column = 0; column < game[row].length; column++) {
        System.out.print(game[row][column] + "\t");
      }
      System.out.println();
    }
  }
}