Question

Write a new program called TrickOr Treat that will do the following 1. In a while loop, say "Trick or Treat!" and allow the user to type in the name of a candy and store it in an ArrayList. Once the user types "Trick", then the loop should stop. Then, print out the total number of candies on the screen. (See example below) [1 points] 2. Write a method called countSnickers that will take an ArrayList of candy as an argument, and return the total number of Snickers candy you have You should print out this value in the main method. [2 points] 3. Overload the countSnickers method to take a conventional array (not ArrayList) of candy as an argument, and return the total number of Snickers candy you have. We will not use this method, just create it only. [1 points] 4. Write another method called search that will take two arguments: an ArrayList of candy and the name of one candy. In the main method, ask the user which candy do you want to search for, and then pass the ArrayList along with the name of the candy that the user typed to the search method The search method will loop through the array and print out how many of those candies exist (See example below). [2 points]

Answer 1

import java.util.ArrayList;

import java.util.Scanner;

public class TrickOrTreat {

public static void main(String[] args) {

//Declaring variables

String name;

ArrayList<String> candies = new ArrayList<String>();

/*

* Creating an Scanner class object which is used to get the inputs

* entered by the user

*/

Scanner sc = new Scanner(System.in);

/* This while loop continues to execute

* until the user enters "Trick"

*/

while (true) {

System.out.print("Trick or Treat :");

name = sc.nextLine();

if (name.equalsIgnoreCase("Trick")) {

break;

} else {

//Adding to the Array list

candies.add(name);

}

}

//calling the method

int snickersCnt = countSnickers(candies);

System.out.println("No of Snickers :" + snickersCnt);

System.out.print("Enter a candy name to search :");

name = sc.nextLine();

//calling the method

search(candies, name);

}

//This method will count no of Snickers and return the count to the caller

private static int countSnickers(ArrayList<String> candies) {

int cnt = 0;

for (int i = 0; i < candies.size(); i++) {

if (candies.get(i).equalsIgnoreCase("Snickers"))

cnt++;

}

return cnt;

}

//This method will count no of Search candy and display the count

private static void search(ArrayList<String> candies, String name) {

int cnt = 0;

for (int i = 0; i < candies.size(); i++) {

if (candies.get(i).equalsIgnoreCase(name))

cnt++;

}

System.out.println("No of '" + name + "' candies are :" + cnt);

}

}

OUTPUT

Trick or Treat :Riesen
Trick or Treat :Bit o Honey
Trick or Treat :SweetTarts
Trick or Treat :Starburst
Trick or Treat :Baby Ruth
Trick or Treat :Milk Duds
Trick or Treat :Jolly Rancher
Trick or Treat :Snickers
Trick or Treat :Milk Duds
Trick or Treat :Snickers
Trick or Treat :Skittles
Trick or Treat :Snickers
Trick or Treat :Skittles
Trick or Treat :SweetTarts
Trick or Treat :Jawbreakers
Trick or Treat :Snickers
Trick or Treat :Trick
Enter a candy name to search :Skittles
No of Snickers :4
No of 'Skittles' candies are :2

_______________

3)

Overloaded countSnickers() method:

int countSnickers(String candies[])

{

int cnt=0;

for(int i=0;i<candies.length;i++)

{

if(candies[i].equalsIgnoreCase("Snickers"))

cnt++;

}

return cnt;

}