36 lines
892 B
JavaScript
36 lines
892 B
JavaScript
/**
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* File: queue.js
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* Created Time: 2022-12-05
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* Author: S-N-O-R-L-A-X (snorlax.xu@outlook.com)
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*/
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/* Driver Code */
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/* Initialize queue */
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// JavaScript does not have a built-in queue, but Array can be used as a queue
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const queue = [];
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/* Element enqueue */
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queue.push(1);
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queue.push(3);
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queue.push(2);
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queue.push(5);
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queue.push(4);
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console.log('Queue queue =', queue);
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/* Access front element */
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const peek = queue[0];
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console.log('Front element peek =', peek);
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/* Element dequeue */
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// Since it's an array, the shift() method has a time complexity of O(n)
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const pop = queue.shift();
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console.log('Element dequeued, pop =', pop, ', after queue = ', queue);
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/* Get the length of the queue */
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const size = queue.length;
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console.log('Queue length size =', size);
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/* Determine if the queue is empty */
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const isEmpty = queue.length === 0;
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console.log('Is the queue empty =', isEmpty);
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