ExcelHome
ExcelHome是Microsoft技术社区联盟成员，全球极具影响力的华语Excel资源网站，拥有大量原创技术文章、模板及Excel教程，并提供Excel免费在线培训，Excel学习资源免费下载，数百万会员在技术论坛参与学习交流。
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LintCode 炼码
Powerful coding training system. LintCode has the most interview problems covering Google, Facebook, Linkedin, Amazon, Microsoft and so on. We provide Chinese and English versions for coders around the world.
Microsoft数学求解器
Online math solver with free step by step solutions to algebra, calculus, and other math problems. Get help on the web or with our math app.
LintCode 炼码
Powerful coding training system. LintCode has the most interview problems covering Google, Facebook, Linkedin, Amazon, Microsoft and so on. We provide Chinese and English versions for coders around the world.