https://answer.freetools.me/tags/%E7%8A%B6%E6%80%81%E6%9C%BA/ Recent content in 状态机 on Answer Hugo -- 0.152.2 zh-cn Sun, 08 Mar 2026 23:55:27 +0800 https://answer.freetools.me/%E8%82%A1%E7%A5%A8%E4%B9%B0%E5%8D%96%E9%97%AE%E9%A2%98%E4%B8%BA%E4%BD%95%E8%83%BD%E7%94%A8%E4%B8%80%E5%A5%97%E4%BB%A3%E7%A0%81%E8%A7%A3%E5%86%B3%E6%89%80%E6%9C%89%E5%8F%98%E4%BD%93%E4%BB%8E%E7%8A%B6%E6%80%81%E6%9C%BAdp%E5%88%B0%E8%B4%AA%E5%BF%83%E7%9A%84%E7%BB%9F%E4%B8%80%E6%A1%86%E6%9E%B6/ Sun, 08 Mar 2026 23:55:27 +0800 https://answer.freetools.me/%E8%82%A1%E7%A5%A8%E4%B9%B0%E5%8D%96%E9%97%AE%E9%A2%98%E4%B8%BA%E4%BD%95%E8%83%BD%E7%94%A8%E4%B8%80%E5%A5%97%E4%BB%A3%E7%A0%81%E8%A7%A3%E5%86%B3%E6%89%80%E6%9C%89%E5%8F%98%E4%BD%93%E4%BB%8E%E7%8A%B6%E6%80%81%E6%9C%BAdp%E5%88%B0%E8%B4%AA%E5%BF%83%E7%9A%84%E7%BB%9F%E4%B8%80%E6%A1%86%E6%9E%B6/ 深度解析LeetCode股票买卖问题系列（121/122/123/188/309/714）的统一解法框架，从状态机DP的核心原理到贪心算法的正确性证明，包含所有六道题目的Java完整解答与面试技巧。 https://answer.freetools.me/tcp-%E4%B8%89%E6%AC%A1%E6%8F%A1%E6%89%8B%E4%B8%8E%E5%9B%9B%E6%AC%A1%E6%8C%A5%E6%89%8B%E4%BB%8E-syn-%E5%88%B0-fin-%E7%9A%84%E7%8A%B6%E6%80%81%E6%9C%BA%E6%BC%94%E8%BF%9B/ Wed, 04 Mar 2026 18:25:02 +0800 https://answer.freetools.me/tcp-%E4%B8%89%E6%AC%A1%E6%8F%A1%E6%89%8B%E4%B8%8E%E5%9B%9B%E6%AC%A1%E6%8C%A5%E6%89%8B%E4%BB%8E-syn-%E5%88%B0-fin-%E7%9A%84%E7%8A%B6%E6%80%81%E6%9C%BA%E6%BC%94%E8%BF%9B/ 深入解析 TCP 连接建立与终止的完整过程：从三次握手的序列号协商到四次挥手的状态流转，剖析 TIME_WAIT 存在的真正原因、SYN Flood 攻击原理，以及那些违背 RFC 规范的 Linux 实现。揭示为什么 TCP 状态机设计如此复杂，以及网络不可靠性如何深刻影响了协议设计。