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<a href="/2022/10/13/%E7%A7%8B%E6%8B%9B%E4%B9%8B%E6%97%85/" class="post-title-link" itemprop="url">本硕非科班转码斩获五家中大厂offer的秋招之旅</a>
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<h3 id="个人背景"><a href="#个人背景" class="headerlink" title="个人背景"></a>个人背景</h3><p>本科华中科技大学，硕士浙江大学，均力学专业，先前无软件开发经验，本科入门学过一点c++。</p>
<h3 id="秋招Offer情况"><a href="#秋招Offer情况" class="headerlink" title="秋招Offer情况"></a>秋招Offer情况</h3><p>成功斩获Tplink、Oppo、蚂蚁、快手、华为五家公司的Offer，且均为sp offer，都是后端岗，除了Oppo在深圳，其他都在杭州。</p>
<h3 id="温馨提醒"><a href="#温馨提醒" class="headerlink" title="温馨提醒"></a>温馨提醒</h3><p>不建议盲目转码，今年秋招形势大家都有目共睹，一方面互联网寒冬公司招人数急剧减少、另一方面近些年越来越多的人加入到转码大军来，导致软件相关岗位的就业竞争异常激烈。</p>
<h3 id="转码契机"><a href="#转码契机" class="headerlink" title="转码契机"></a>转码契机</h3><p>我是在刚读研的时候，导师让我做机器学习和力学结合的工作，在机缘巧合之下发现了自己对敲代码非常有兴趣，并且结合自己未来的就业目标，最终下定决心转码的。</p>
<h3 id="自学之旅"><a href="#自学之旅" class="headerlink" title="自学之旅"></a>自学之旅</h3><p>我从研一就开始做准备的，经过网上查各种资料、调研，最终选择学习Java。计算力学</p>
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<h2 id="1-什么是IO"><a href="#1-什么是IO" class="headerlink" title="1. 什么是IO"></a>1. 什么是IO</h2><p>IO即<code>input/output</code>，在Linux世界中，一切皆文件，而文件就是一串二进制流，不管是FIFO、Socket、管道还是终端，都可以视为“流”，<strong>在信息的交换过程中，对这些流进行数据收发的操作被称为I/O操作</strong>。IO有内存IO、网络IO、磁盘IO三种，通常我们说的IO是指后面两种。如磁盘IO，从磁盘中读取数据到内存可以理解为一次输入，对应的，将内存中的数据写入磁盘，就算输出。</p>
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<p>题目对应<code>LeetCode</code><a target="_blank" rel="noopener" href="https://leetcode.cn/problems/sliding-window-maximum/">239. 滑动窗口最大值</a></p>
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<p>在谈论到网络I/O时，经常会碰到几个非常容易混淆的概念：同步、异步、阻塞、非阻塞。我们来通过这篇文章彻底搞清楚这些概念！</p>
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