This article mainly shares with you the php code to implement a two-way queue. It is mainly shared with you in the form of code. I hope it can help you.
<?phpclass Deque {
private $queue = array(); public function addFirst($item) {
return array_unshift($this->queue, $item);
} public function addLast($item) {
return array_push($this->queue, $item);
} public function removeFirst() {
return array_shift($this->queue);
} public function removeLast() {
return array_pop($this->queue);
}
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