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* docs: add Japanese documents (`ja/docs`) * docs: add Japanese documents (`ja/codes`) * docs: add Japanese documents * Remove pythontutor blocks in ja/ * Add an empty at the end of each markdown file. * Add the missing figures (use the English version temporarily). * Add index.md for Japanese version. * Add index.html for Japanese version. * Add missing index.assets * Fix backtracking_algorithm.md for Japanese version. * Add avatar_eltociear.jpg. Fix image links on the Japanese landing page. * Add the Japanese banner. --------- Co-authored-by: krahets <krahets@163.com>
46 lines
1.6 KiB
Java
46 lines
1.6 KiB
Java
/**
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* File: deque.java
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* Created Time: 2022-11-25
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* Author: krahets (krahets@163.com)
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*/
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package chapter_stack_and_queue;
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import java.util.*;
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public class deque {
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public static void main(String[] args) {
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/* 両端キューを初期化 */
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Deque<Integer> deque = new LinkedList<>();
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deque.offerLast(3);
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deque.offerLast(2);
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deque.offerLast(5);
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System.out.println("両端キュー deque = " + deque);
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/* 要素へのアクセス */
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int peekFirst = deque.peekFirst();
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System.out.println("先頭要素 peekFirst = " + peekFirst);
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int peekLast = deque.peekLast();
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System.out.println("末尾要素 peekLast = " + peekLast);
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/* 要素のエンキュー */
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deque.offerLast(4);
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System.out.println("要素4を末尾にエンキュー、deque = " + deque);
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deque.offerFirst(1);
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System.out.println("要素1を先頭にエンキュー、deque = " + deque);
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/* 要素のデキュー */
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int popLast = deque.pollLast();
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System.out.println("両端キュー末尾要素 = " + popLast + "、末尾からデキュー後 " + deque);
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int popFirst = deque.pollFirst();
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System.out.println("両端キュー先頭要素 = " + popFirst + "、先頭からデキュー後 " + deque);
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/* 両端キューの長さを取得 */
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int size = deque.size();
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System.out.println("両端キューの長さ size = " + size);
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/* 両端キューが空かどうかを判定 */
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boolean isEmpty = deque.isEmpty();
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System.out.println("両端キューが空か = " + isEmpty);
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}
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} |