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@o-henry
Created February 26, 2020 01:57
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Queue
class Queue {
constructor() {
this._arr = [];
}
enqueue(item) {
this._arr.push(item);
}
dequeue() {
return this._arr.shift();
}
}
const queue = new Queue();
queue.enqueue(1);
queue.enqueue(2);
queue.enqueue(3);
queue.dequeue(); // 1
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