<?xml version="1.0" encoding="utf-8"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"><channel><title>MagicLen</title><link>https://magiclen.org/tag/%E5%BE%8C%E5%BA%8F%E5%BC%8F/feed</link><description>多元化原創文章，內容包羅萬象，有程式語言、網站應用、軟體介紹、硬體介紹、作業系統、旅行遊記、專題採訪、益智問題、文學創作，以及作者們的知識分享和作品分享。</description><language>zh-TW</language><lastBuildDate>Sat, 11 Apr 2026 13:24:42 +0000</lastBuildDate><sy:updatePeriod>hourly</sy:updatePeriod><sy:updateFrequency>8</sy:updateFrequency><sy:updateBase>1970-01-01T00:00+00:00</sy:updateBase><item><title>電腦是怎麼進行四則運算的？前序式、中序式、後序式又是什麼？</title><link>https://magiclen.org/arithmetic</link><description><![CDATA[    <img src="https://magiclen.org/wp-content/uploads/2020/04/addition-black-and-white-black-and-white-chalk-374918-220x162.jpg" srcset="https://magiclen.org/wp-content/uploads/2020/04/addition-black-and-white-black-and-white-chalk-374918-220x162.jpg 1x, https://magiclen.org/wp-content/uploads/2020/04/addition-black-and-white-black-and-white-chalk-374918-440x324.jpg 2x, https://magiclen.org/wp-content/uploads/2020/04/addition-black-and-white-black-and-white-chalk-374918-660x486.jpg 3x" alt="">
我們從小學習算術的時候便知道「四則(加、減、乘、除)運算」的規則，也就是「先乘除、後加減，以及括號先算」。那麼如果我們要撰寫一個可以支援算式輸入且能夠按照四則運算規則求出結果的程式，該怎麼做呢？]]></description><category>研究分享</category><category>Java</category><category>Rust</category><category>演算法</category><category>Go</category><category>JavaScript</category><category>Java</category><category>JavaScript</category><category>Rust</category><category>TypeScript</category><category>四則運算</category><category>後序式</category><category>深度優先搜尋</category><category>Go</category><guid>https://magiclen.org/arithmetic</guid><pubDate>Thu, 18 Jun 2020 12:00:21 +0800</pubDate><dc:creator>Magic Len</dc:creator></item></channel></rss>