<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:content="http://purl.org/rss/1.0/modules/content/"><channel><title>자료구조 on wid's blog</title><link>https://wid-blog.github.io/tags/%EC%9E%90%EB%A3%8C%EA%B5%AC%EC%A1%B0/</link><description>Recent content in 자료구조 on wid's blog</description><generator>Hugo</generator><language>ko</language><lastBuildDate>Sat, 04 Jul 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://wid-blog.github.io/tags/%EC%9E%90%EB%A3%8C%EA%B5%AC%EC%A1%B0/index.xml" rel="self" type="application/rss+xml"/><item><title>Union-Find — 두 최적화가 O(N) 을 상수로 만든다</title><link>https://wid-blog.github.io/posts/tech/algorithm/union-find/</link><pubDate>Sat, 04 Jul 2026 00:00:00 +0000</pubDate><guid>https://wid-blog.github.io/posts/tech/algorithm/union-find/</guid><description>Union-Find 는 그룹마다 root 대표를 두고 같은 그룹인지 판정한다. 최적화 없는 구현은 사슬 트리에서 find 가 O(N) 까지 늘어지지만, path compression 과 union by rank 를 더하면 사실상 상수가 된다.</description></item></channel></rss>