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Learning JavaScript Data Structures and Algorithms

You're reading from   Learning JavaScript Data Structures and Algorithms JavaScript Data Structures and algorithms can help you solve complex development problems – learn how by exploring a huge range of JavaScript data types

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Product type Paperback
Published in Oct 2014
Publisher Packt
ISBN-13 9781783554874
Length 218 pages
Edition 1st Edition
Languages
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Author (1):
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Loiane Avancini Loiane Avancini
Author Profile Icon Loiane Avancini
Loiane Avancini
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Toc

The circular queue – Hot Potato

We also have another modified version of the queue implementation, which is the circular queue. An example of a circular queue is the Hot Potato game. In this game, children are organized in a circle, and they pass the hot potato to the neighbor as fast as they can. At a certain point of the game, the hot potato stops being passed around the circle of children and the child that has the hot potato is removed from the circle. This action is repeated until there is only one child left (the winner).

For this example, we will implement a simulation of the Hot Potato game:

function hotPotato (nameList, num){

    var queue = new Queue(); // {1}

    for (var i=0; i<nameList.length; i++){
        queue.enqueue(nameList[i]); // {2}
    }

    var eliminated = '';
    while (queue.size() > 1){
        for (var i=0; i<num; i++){
            queue.enqueue(queue.dequeue()); // {3}
        }
        eliminated = queue.dequeue();// {4}
       ...
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