Update README.md

Author: CyC2018

README.md

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 |       算法       |             操作系统             |     网络     |        面向对象        |      数据库      |    Java    |         系统设计         |    工具    |               编码实践               |    后记    |
 | :------------------------: | :------------------------------: | :--------------------: | :--------------------: | :----------------------------------: | :--------------------------------------: | :----------------------: | :--------------------------------------: | :----------------------------------: | :--------------------------------------: |
 | [:pencil2:](#pencil2-算法) | [:computer:](#computer-操作系统) | [:cloud:](#cloud-网络) | [:art:](#art-面向对象) | [:floppy_disk:](#floppy_disk-数据库) |         [:coffee:](#coffee-java)         | [:bulb:](#bulb-系统设计) |         [:wrench:](#wrench-工具)         | [:watermelon:](#watermelon-编码实践) |           [:memo:](#memo-后记)           |
 
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     <img src="assets/LogoMakr_0zpEzN.png" width="200px">
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 ## :pencil2: 算法
 
 - [剑指 Offer 题解](https://github.com/CyC2018/CS-Notes/blob/master/notes/剑指%20Offer%20题解%20-%20目录.md)
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 - [代码可读性](https://github.com/CyC2018/CS-Notes/blob/master/notes/代码可读性.md)
 - [代码风格规范](https://github.com/CyC2018/CS-Notes/blob/master/notes/代码风格规范.md)
 
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 <div align="center"><img width="580px" src="https://cs-notes-1256109796.cos.ap-guangzhou.myqcloud.com/other/公众号海报1.png"></img></div>
 
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 ## :memo: 后记 
 
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 ### 更多内容
 
 - 内推：[Job-Recommend](https://github.com/CyC2018/Job-Recommend)
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 感谢以下人员对本仓库做出的贡献，当然不仅仅只有这些贡献者，这里就不一一列举了。如果你希望被添加到这个名单中，并且提交过 Issue 或者 PR，请与我联系。
 
 <a href="https://github.com/linw7">
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 <a href="https://github.com/g10guang">
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 <a href="https://github.com/Sctwang">
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 <a href="https://github.com/ResolveWang">
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 <a href="https://github.com/crossoverJie">
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 <a href="https://github.com/jy03078584">
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 <a href="https://github.com/kwongtailau">
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 <a href="https://github.com/xiangflight">
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 <a href="https://github.com/mafulong">
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 <a href="https://github.com/yanglbme">
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 <a href="https://github.com/OOCZC">
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 <a href="https://github.com/5renyuebing">
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