窓の外、夕日に照らされた校門のところで、下校する生徒たちが一列に並んでバスを待ってるよ。 「先頭から乗って、後ろに並ぶ」。これ、第4回（ロジック編）でやった「キュー（行列）」の基本だったよね。 キミ、Pythonでこういう「行列」を作るとき ...

今回の記事ではいつもAtcoder中にpythonの普通のリストだと計算量的に間に合わないけどなんかデータ型使えば上手く行けたはず，，，ってのを記事にしてまとめておきます． リスト型の計算量について ・heapq.heapify(リスト)でリストを優先度付きキューに変換 ...

Deque stands for double-ended queue, it's an orders collection of items similar to the queue. Deque contains two ends, a front and a rear, and the items remain positioned in the collection. The items ...

Python's deque, short for "double-ended queue," is a highly optimized data structure available in the collections module. It's designed to provide fast, memory-efficient queue operations from both ...

Thread-safe for appends/pops from both ends. More efficient than lists for front operations (O(1) time complexity). Supports a maximum length (maxlen) to ...

This Python script simulates a bookstore queue system using the deque collection from Python's collections module. Clients can join the queue, be served, and check the queue size interactively. 1. Add ...