Write a Java program to Find the Product of all elements in a queue
The Java code defines a class QueueProduct with a method findProduct that finds the product of all elements in a given Queue of integers.
- The findProduct method takes a Queue<Integer> named queue as input and returns an integer representing the product of all elements in the queue.
- The method initializes a variable prod to 1. This variable will be used to store the product of all elements in the queue.
- The method then iterates through the elements of the queue using an enhanced for loop (also known as a "for-each" loop). In each iteration, the variable num takes the value of the current element from the queue.
- Inside the loop, the code multiplies num with the current value of prod, effectively calculating the product of all elements in the queue.
- After the loop finishes, the variable prod will hold the product of all elements in the queue.
- The method returns the value of prod.
- In the main method, a Queue<Integer> named queue is created using the LinkedList implementation of the Queue interface. Elements (integers) are added to the queue using the offer() method.
- The original queue elements are printed using System.out.println().
- The findProduct method is then called with the queue as an argument, and the product of all elements returned by the method is stored in the variable prod.
- Finally, the product of all elements in the queue is printed using System.out.println().
Source Code
import java.util.*;
public class QueueProduct
{
public static int findProduct(Queue<Integer> queue)
{
int prod = 1;
for (int num : queue)
{
prod *= num;
}
return prod;
}
public static void main(String[] args)
{
Queue<Integer> queue = new LinkedList<>();
queue.offer(1);
queue.offer(2);
queue.offer(3);
queue.offer(4);
System.out.println("Original Queue Elements : "+queue);
int prod = findProduct(queue);
System.out.println("Product of Queue Elements : " + prod);
}
}
Output
Original Queue Elements : [1, 2, 3, 4]
Product of Queue Elements : 24