38 lines
852 B
Dart
38 lines
852 B
Dart
/**
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* File: queue.dart
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* Created Time: 2023-03-28
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* Author: liuyuxin (gvenusleo@gmail.com)
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*/
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import 'dart:collection';
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void main() {
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/* Initialize queue */
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// In Dart, the Queue class is generally used as a queue
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final Queue<int> queue = Queue();
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/* Element enqueue */
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queue.add(1);
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queue.add(3);
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queue.add(2);
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queue.add(5);
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queue.add(4);
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print("Queue queue = $queue");
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/* Access front element */
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final int peek = queue.first;
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print("Front element peek = $peek");
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/* Element dequeue */
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final int pop = queue.removeFirst();
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print("Dequeue element pop = $pop, queue after dequeue = $queue");
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/* Get queue length */
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final int size = queue.length;
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print("Queue length size = $size");
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/* Determine if the queue is empty */
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final bool isEmpty = queue.isEmpty;
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print("Is the queue empty = $isEmpty");
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}
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