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摘要： Initialization happens when a variable is given a value at the moment it is created. Assignment obliterates the variable's current value and replace t... 阅读全文

摘要： 最近做Leetcode上的题目，感觉有些挺有趣的，比如这个Single Number题目：Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?如果没有时间和空间复杂度的限制，这道题并没有什么难处，大可以扫一遍数组，然后用hashmap记录每个数值出 阅读全文

摘要： 下载安装包Berkeley DB 5.3.21.tar.gzhttp://www.oracle.com/technetwork/products/berkeleydb/downloads/index.html解压 tar -zxvfBerkeley DB 5.3.21.tar.gzcd Berkeley DB 5.3.21/build_unixBuild Berkeley DB 库：../dist/configure /*如果用Berkeley DB C++ API， 要加--enable-cxx选项*/make 安装Berkeley DB库： make install P.S. 1. ... 阅读全文