Question

java Programming Problem 2: Pez Candy

You may like the Pez candies and the wonderful dispensers that can be customized in so many ways. In each plastic container of Pez candy, the candies are of different colors, and they are stored in random order. Assume that you like the red candies only. Take a Pez dispenser, take out all candies one by one, eat the red ones, and put the others in a spare container you have at hand. Return the remaining candies in the initial container.

Your Tasks:

1. Create a class PezCandy in which you implement an array-based stack
2. Create a class PezCandyDriver in which you solve the problem as described above
3. Create an algorithm showing how you take out the candies, eat the red ones, and put them back in the container, in the original order. Place the algorithm, as a comment in the top of your PezCandyDriver file
4. Use an initial Pez dispenser with 12 candies, in which the colors of the candies are randomly chosen from: red, yellow, green, pink, blue.

   Hints

5. Run the program and capture a snapshot showing the initial content of the Pez container, and the content after you ate all red candies.
6. If you implement all the required methods properly, the driver program should generate outputs similar to the following:

Answer 1

Save the below file as "PezCandy.java"

import java.util.*;

public class PezCandy {

    private String[] list; // array of string to contains candy

    private int size; // size of candies

    private int index; // current index

  

    // constructor

    public PezCandy(int s) {

      this.size = s;

      this.index = 0;

      this.list = new String[this.size];

    }

  

    // add candy in stack

    public void add(String str) {

      if (this.index < this.size) {

        this.list[this.index++] = str;

      }

    }

  

    // size of stack

    public int getSize() {

      return this.index;

    }

  

    // pop the last candy from stack

    public String pop() {

      if (this.index > 0) {

        String ret = this.list[this.index - 1];

        this.index--;

        return ret;

      }

      return "";

    }

  

    // if stack is empty or not

    public boolean isEmpty() {

      return this.index == 0;

    }

  

    // to display candy stack

    public String toString() {

      String ret = "Candy stack:\n";

      for (int i = this.index - 1; i >= 0; i--) {

        ret += "\t" + this.list[i] + "\n";

      }

      return ret;

    }

  }

Save the below file as "PezCandyDriver.java"

import java.util.*;

public class PezCandyDriver {

  public static void main(String[] args) {

    Random rand = new Random();

    // pez candy with size 12

    PezCandy pc = new PezCandy(12);

    for (int i = 0; i < 12; i++) {

      int r = rand.nextInt(5);

      String val = "";

      // random candy add in stack

      if (r == 0) {

        val = "red";

      }

      if (r == 1) {

        val = "yellow";

      }

      if (r == 2) {

        val = "green";

      }

      if (r == 3) {

        val = "pink";

      }

      if (r == 4) {

        val = "blue";

      }

      pc.add(val);

    }

    // original stack

    System.out.println("The original contenet of the Pez container");

    System.out.print(pc);

    PezCandy pc1 = new PezCandy(12);

    // eat red candies

    while (pc.isEmpty() == false) {

      String candy = pc.pop();

      if (candy.equals("red")) {

        System.out.println("I am just eating red candy!!!");

      } else {

        pc1.add(candy);

      }

    }

    System.out.println("The spare dispenser");

    System.out.print(pc1);

    while (pc1.isEmpty() == false) {

      String candy = pc1.pop();

      pc.add(candy);

    }

    // display the container

    System.out.println("The content of Pez container after eating red candies");

    System.out.print(pc);

  }

}

Make sure to save both files in the same folder

//SAMPLE OUTPUT

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