169 lines
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<h2 class="wrapper title">飞蟒微课堂Python面试专项课程启动——LeetCode刷题计划</h2>
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<span>Author：</span><span>flypython</span> | <span>Date: </span><span>2020-01-02</span> | <span>Category：</span><span><a href="/fly/飞蟒微课堂/" title="飞蟒微课堂">飞蟒微课堂</a><a href="/fly/飞蟒微课堂/LeetCode/" title="LeetCode">LeetCode</a></span>
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<h2 id="LeetCode刷题计划"><a href="#LeetCode刷题计划" class="headerlink" title="LeetCode刷题计划"></a>LeetCode刷题计划</h2><p>我至今面试过几百人，发现很多候选人基础确实有不少的问题，尤其是转专业的同学。</p>
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<p>大多数的公司面试工程师时都会考察这几个方面，</p>
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<ul>
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<li>数据结构与算法，一般为leetcode题目</li>
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<li>简历上的项目探讨与深入研究</li>
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<li>业务场景设计题</li>
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</ul>
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<p>按照不同的职位，会增加相应的内容。比如算法工程师，会问机器学习与深度学习算法，如果有paper和比赛，也会问一些。但是一般前两轮都是数据结构和算法，所以数据结构与算法是敲门砖，希望同学们能在这方面多下些功夫。</p>
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<p>Python面试专项课程分为两部分，一是刷leetcode，二是公司面试真题。完整的题解目录请在FlyPython公众号菜单上查看，这次主要介绍leetcode，面试真题后面会有具体的介绍。</p>
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<p>那怎么刷LeetCode呢？你可以根据自己的实际情况来决定，如果时间充裕可以通过题型来分类，每个题型都刷10题左右。如果时间紧张，建议刷热门题和公司题库，提高命中率。你也可以每周参加leetcode的周赛，来维持手感。</p>
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<p>真正做到bug free，确实很难，有的时候刷2-3遍也不行，得多做变型题，多想多总结，不断积累基础就变扎实了。难度以中等为主，兼顾hard。</p>
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<p>这次的LeetCode刷题计划，是以leetcode中文站的精选TOP面试题为基础的，题目共145道，希望对同学们有帮助。</p>
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<ul>
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<li>题目链接： <a href="https://leetcode-cn.com/problemset/top/" target="_blank" rel="noopener">https://leetcode-cn.com/problemset/top/</a></li>
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<li>题解总目录： <a href="http://flypython.com/leetcode/" target="_blank" rel="noopener">http://flypython.com/leetcode/</a> </li>
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<li>leetcode主页: <a href="https://leetcode-cn.com/u/flypython/" target="_blank" rel="noopener">https://leetcode-cn.com/u/flypython/</a></li>
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</ul>
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<h2 id="附：LeetCode练手题"><a href="#附：LeetCode练手题" class="headerlink" title="附：LeetCode练手题"></a>附：LeetCode练手题</h2><p>还没有注册LeetCode的同学，先去注册一个并完成下面的的练手题。还没有关注FlyPython的同学长按最后的二维码关注我吧。</p>
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<h4 id="LCP-1-猜数字"><a href="#LCP-1-猜数字" class="headerlink" title="LCP 1. 猜数字"></a>LCP 1. 猜数字</h4><p>链接：<a href="https://leetcode-cn.com/problems/guess-numbers/" target="_blank" rel="noopener">https://leetcode-cn.com/problems/guess-numbers/</a><br>难度：简单</p>
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<h4 id="题目"><a href="#题目" class="headerlink" title="题目"></a>题目</h4><blockquote>
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<p>小A 和 小B 在玩猜数字。小B 每次从 1, 2, 3 中随机选择一个，小A 每次也从 1, 2, 3 中选择一个猜。他们一共进行三次这个游戏，请返回 小A 猜对了几次？</p>
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<p>输入的guess数组为 小A 每次的猜测，answer数组为 小B 每次的选择。guess和answer的长度都等于3。</p>
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<p>示例 1：</p>
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<p>输入：guess = [1,2,3], answer = [1,2,3]<br>输出：3<br>解释：小A 每次都猜对了。</p>
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<p>示例 2：</p>
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<p>输入：guess = [2,2,3], answer = [3,2,1]<br>输出：1<br>解释：小A 只猜对了第二次。</p>
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<p>限制：</p>
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<p>guess的长度 = 3<br>answer的长度 = 3<br>guess的元素取值为 {1, 2, 3} 之一。<br>answer的元素取值为 {1, 2, 3} 之一。</p>
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</blockquote>
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<h4 id="题解"><a href="#题解" class="headerlink" title="题解"></a>题解</h4><p>leetcode最简单的练手题，可以循环比较计数，也可以直接三个元素比较。</p>
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<h4 id="解法"><a href="#解法" class="headerlink" title="解法"></a>解法</h4><p><img src="https://tva1.sinaimg.cn/large/006tNbRwly1gb1xh2ta3wg313q0hu7s8.gif" alt></p>
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