Q:

Scala program to print the last item of the queue

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YasminRadwan26
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2022-07-09
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In this program, we will create a queue using the Queue collection class and get the last item of the queue using the last() method and print the result on the console screen.

The Queue is a linear data structure, It follows the First In First Out (FIFO) property. We can insert and remove the item in the queue from different ends of the queue.

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YasminRadwan26
2022-07-09
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Program/Source Code:

The source code to print the last item of the queue is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to print the last item of the queue

import scala.collection.mutable._

object Sample {
  // Main method
  def main(args: Array[String]) {
    var queue = Queue(60, 25, 23, 40, 50);

    var result = queue.last;

    println("Last item of queue is: " + result);
  }
}

Output:

Last item of queue is: 50

Explanation:

Here, we used an object-oriented approach to create the program. And, we imported Collection classes using the below statement,

import scala.collection.mutable._

And, we also created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created a queue queue using the Queue collection class. Then we got the last item of the queue using the last() method and printed the result on the console screen.

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