持久性变数据不要和持久储存相混淆 在计算机中持久性数据或非临时数据是一种数据结构,在修改时始终保持其自身的先前版本.这些数据实际上是不可变的,因为对这类数据操作不会明显的改变数据结构,而是始终产生新的数据结构. 部分持久性数据:如果可以访问某个数据所有版本,但只能修改最新的版本,则数据是部分持久的. 汇合持久性数据:如果可以从之前的两个数据版本通过合并或者融合,可以创建一个新版本数据,则数据是汇合持久的. 数据结构不是持久的则称之为临时的. 持久性数据结构在逻辑编程和函数式编程中特别常见,因为这…

源地址:http://en.wikipedia.org/wiki/Heap_%28data_structure%29 在计算机科学领域,堆是指一个特定的基于数结构的数据结构,其必须满足堆属性: 如果A是B的父级节点,那么A和B的排序规则,和整棵数的排序规则一致.也就是说,要么整棵树中父节点都大于或等于字节点,最大的节点是根节点(最大堆):要么整棵树中所有的父节点都小于或者等于子节点,最小的节点是根节点(最小堆).堆结构在一些有关图的算法中有着重要作用,比如宽度优先遍历的Dijkstra's al…

原文链接:http://www.codeproject.com/Articles/9680/Persistent-Data-Structures Introduction When you hear the word persistence in programming, most often, you think of an application saving its data to some type of storage, such as a database, so that the…

Implement a data structure supporting the following operations: Inc(Key) - Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-empty string. Dec(Key) - If Key's value is 1, remove it from the data structu…

I Can Guess the Data Structure! There is a bag-like data structure, supporting two operations: 1 x Throw an element x into the bag. 2 Take out an element from the bag. Given a sequence of operations with return values, you're going to guess the data…

常用数据结构及复杂度 http://www.cnblogs.com/gaochundong/p/3813252.html 常用数据结构的时间复杂度 Data Structure Add Find Delete GetByIndex  Array (T[]) O(n) O(n) O(n) O(1)  Linked list (LinkedList<T>) O(1) O(n) O(n) O(n)  Resizable array list (List<T>) O(1) O(n) O(n…

UVa11995  I Can Guess the Data Structure! 思路:边读边模拟,注意empty的判断! 代码如下: #include<iostream> #include<queue> #include<stack> using namespace std; int main(){ queue<int> q; priority_queue<int> pri_q; stack<int> sta; int n; wh…

Implement a data structure supporting the following operations: Inc(Key) - Inserts a new key with value 1. Or increments an existing key by 1. Key is guaranteed to be a non-empty string. Dec(Key) - If Key's value is 1, remove it from the data structu…

1.前言 本文主要是对Microsoft Extensible Firmware Initiative FAT32 File System Specification中文翻译版的学习笔记. 每个FAT文件系统基本区域由4部分组成,这些基本区域按如下顺序排列: FAT32典型布局如下: 上一部分主要介绍了Rerverd Region中的启动扇区与BPB,本节继续介绍Fat Region Fat Region包含Fat表,它位于Rerserved Region之后 2.FAT区(Fat Data S…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…