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This article mainly explains "what is php two-way queue". The content of the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "what is php two-way queue".

Php two-way queue refers to a kind of data structure with the nature of queue and stack; elements in two-way queue can be popped up from both ends, and its limited insertion and deletion operations are carried out on both sides of the table; two-way queue is like a queue, but you can add or remove elements at either end.

This article operating environment: Windows7 system, PHP7.1 version, DELL G3 computer

What does php two-way queue mean?

PHP-implement a two-way queue with PHP

1. Brief introduction

Deque, full name double-ended queue, is a data structure with queue and stack properties. Elements in a double-ended queue can be popped from both ends, and their limited insertions and deletions are performed at both ends of the table. A two-way queue (double-ended queue) is like a queue, but you can add or remove elements at either end.

Reference: http://zh.wikipedia.org/zh-cn/%E5%8F%8C%E7%AB%AF%E9%98%9F%E5%88%97

2.PHP implementation code

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