Difference Between Initialization and Assignment in C++
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
Leetcode: Single Number
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
Unix安装BerkeleyDB
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