Building Java Programs: A Back To Basics Approach, Loose Leaf Edition (5th Edition)
Building Java Programs: A Back To Basics Approach, Loose Leaf Edition (5th Edition)
5th Edition
ISBN: 9780135472118
Author: Stuart Reges, Marty Stepp
Publisher: PEARSON
Question
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Chapter 14, Problem 20E
Program Plan Intro

Rearrangement of queue

Program plan:

  • Import necessary packages.
  • Create a class “QueueRearrange”,
    • Define the method “interleave ()” that accepts a queue of integers,
      • Check whether the size of the queue is odd,
        • If it is true, throws an exception.
      • Create stack object.
      • Calculate half size of the queue.
      • Execute loop to iterate over half of the queue,
        • Transfer half of the queue elements into the stack.
      • Execute till stack becomes empty,
        • Transfer all the elements from the stack to queue.
      • Execute loop to iterate over half of the queue,
        • Remove and insert the same element into the same queue.
      • Execute loop to iterate over half of the queue,
        • Transfer half of the queue elements into the stack.
      • Execute till stack becomes empty,
        • Transfer all the elements from the stack to queue.
        • Reverse all the elements in the queue.
      • Print the queue after the rearrangement.
    • Define the method “main()”,
      • Construct “LinkedList” object.
      • Add integers into the queue.
      • Print the queue of integers.
      • Call the method “interleave()” with queue as parameter.

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