<?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>边界问题 on Jeanphilo Blog</title><link>https://jeanphilogong.github.io/jeanblog/zh/tags/%E8%BE%B9%E7%95%8C%E9%97%AE%E9%A2%98/</link><description>Recent content in 边界问题 on Jeanphilo Blog</description><generator>Hugo -- 0.168.0</generator><language>zh-cn</language><lastBuildDate>Fri, 14 Aug 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://jeanphilogong.github.io/jeanblog/zh/tags/%E8%BE%B9%E7%95%8C%E9%97%AE%E9%A2%98/index.xml" rel="self" type="application/rss+xml"/><item><title>二分查找区间怎么选：从候选集合到边界更新</title><link>https://jeanphilogong.github.io/jeanblog/zh/alg/leetcode/binary-search/binary-search-interval-conventions/</link><pubDate>Fri, 14 Aug 2026 00:00:00 +0000</pubDate><guid>https://jeanphilogong.github.io/jeanblog/zh/alg/leetcode/binary-search/binary-search-interval-conventions/</guid><description>从候选集合出发，理解二分查找的闭区间、左闭右开区间和开区间哨兵写法，以及初始化、循环条件与边界更新为什么必须配套。</description></item><item><title>比目标字母大的最小字母：有序字符数组上的二分查找技巧（LeetCode 744）</title><link>https://jeanphilogong.github.io/jeanblog/zh/alg/leetcode/binary-search/744-find-smallest-letter-greater-than-target/</link><pubDate>Thu, 04 Dec 2025 11:30:00 +0800</pubDate><guid>https://jeanphilogong.github.io/jeanblog/zh/alg/leetcode/binary-search/744-find-smallest-letter-greater-than-target/</guid><description>在排序字符数组中查找比目标字母大的最小字母（Find Smallest Letter Greater Than Target），支持环绕。本文用 upper_bound 二分模板稳定处理边界，并提供多语言实现和工程实践示例。</description></item></channel></rss>