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spring mvc的jar包下载：http://repo.springsource.org/libs-release-local/org/springframework/spring/我下载的5.0.4版本，5.0.4.RELEASE/下的spring-framework-5.0.4.RELEAS 阅读全文
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You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest version of your product fails the quality c 阅读全文
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Given two strings s and t, write a function to determine if t is an anagram of s. For example,s = "anagram", t = "nagaram", return true.s = "rat", t = 阅读全文
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Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front 阅读全文
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Implement the following operations of a stack using queues. push(x) -- Push element x onto stack. pop() -- Removes the element on top of the stack. to 阅读全文
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Given two strings s and t, determine if they are isomorphic. Two strings are isomorphic if the characters in s can be replaced to get t. All occurrenc 阅读全文
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Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 32-bit 阅读全文
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在莫烦Python教程的“Dropout 解决 overfitting”一节中，出现错误如下： InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder_1' with dtype float an 阅读全文
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1. scikit-learn所依赖的环境： python(>=2.6 or >=3.3) numpy(>=1.6.1) scipy(>=0.9) 可用conda list 查看当前所安装的包2. 有两种安装方式： (1) pip安装：pip install -U scikit-learn (2) 阅读全文
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Given an array of integers, every element appears twice except for one. Find that single one. Note:Your algorithm should have a linear runtime complex 阅读全文