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Given an array of integers, every element appears three times except for one. Find that single one. Note: Your algorithm should have a linear runtime 阅读全文
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Given a collection of distinct numbers, return all possible permutations. For example, [1,2,3] have the following permutations: class Solution(object) 阅读全文
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Given a singly linked list, group all odd nodes together followed by the even nodes. Please note here we are talking about the node number and not the 阅读全文
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Serialization is the process of converting a data structure or object into a sequence of bits so that it can be stored in a file or memory buffer, or 阅读全文
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原文链接:http://www.jianshu.com/p/0bafd0168647 OpenTSDB介绍 1.1、OpenTSDB是什么?主要用途是什么? 官方文档这样描述:OpenTSDB is a distributed, scalable Time Series Database (TSDB 阅读全文
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转自:http://www.jianshu.com/p/b925b1584ab2 RRDTool 是一套监测工具,可用于存储和展示被监测对象随时间的变化情况。比如,我们在 Windows 电脑上常见的内存和 CPU 使用情况。 RRD 全称是 Round Robin Database ,即「环型数据 阅读全文