coursera data structures

Today we introduce the chain structure of the stack, with dev-c++4.9.9.2 debugging through, less nonsense directly on the code:Data structure body storage file Stacklist.h file as follows#ifndef _stacklist_h_#define _stacklist_h_typedef struct _node{ int data; struct _node *pre; struct _node *next;} node,*pnode;typedef struct _stack_header{ struct _node *botton; struct _node *top; int size; } Stack_header,*pstack_header;pstac

For some time did not write some about the data structure of the program, just the introduction of the algorithm of the course to learn red and black trees, the sense of data structures are almost forgotten, but also to test, and then take to review.One, C + + implementation of single-linked list#include using namespaceStd;typedefstructlnode{intdata; structLnode

Variables store the data in memory. This means that there is a space in memory when creating variables. Based on the data type of the variable, the interpreter allocates the specified memory and determines what data can be stored in memory.Variables in Python do not need to be declared , and the assignment of variables is the process of declaring and defining var

methods of collection and traversal mode Collection:add () Remove () contains () iterator () size () Traversal: Enhanced for iterator |--listget () Traversal: normal For|--setmap:put () Remove () ContainsKey (), Containsvalue () KeySet () get () value () EntrySet () size () Traversal: Find values based on key values for key and value jobs: Any collection I've explained, I ask you to store what you are able to store. And, you have to be able to traverse it.4:arraylist,linkedlist,hashset,hashmap

only the m_ilength can be changed to achieve the goal.Iii. results:The first line: we use the push () function to put in 1-6, 6 floating-point numbers, but the stack is set to a size of only 5, so "6" is not in the stack. Calling printf () printing can only see 1 to 5.The second line: There are 5 data in the stack, the stack top data is "1", and the bottom data

language, the most basic structure is two kinds, one is an array, the other is an analog pointer (reference), all data structures can be constructed with these two basic structures, HashMap is no exception. HashMap is actually an "array of linked lists" of data structures,

follows:Set table total n nodes, divided into B block, s=n/b(Block Lookup Index Table) average lookup length =log2 (n/s+1) +S/2(Sequential Lookup Index Table) Average lookup length = (s2+2s+n)/(2S)Note:The advantage of block lookups is that when you insert or delete a record in a table, you can insert or delete operations in the block (because they are unordered in the block, so you do not need to move a lot of records) as long as you find the block that the record belongs to. The main cost is

different element, thus S (i) s (j) = NULL, which makes these collections disjoint (disjoint). There are two operations that can be performed, that is, finding the collection to which a given element belongs and merging two collections. An operation is find, which returns the name of the collection that contains the given element (that is, the equivalence class). Ling An operation is to add a relationship. If we want to add relationship a~b, we first need to know if A and B already exist. Thi

arranged in order. Delete them from the ordered table and add them to the array again. Then the order of the array will be sorted. This sorting method is more efficient than insert sorting in the array, because this method moves less times and the insert sorting in the array moves O (N * n). In this sort, you only need 2 * n copies. But there are also disadvantages, that is, to open up almost twice the space. Two-way linked list It provides the forward and backward traversal capabilities of the

belongsB: Comparator sorting (collection with comparison)Let the collection construct method receive comparator implementation class objectC: Look at the code we've talked about.(4) CaseA: Get random numbers with no duplicatesB: Keyboard Entry students follow the total score from the high end output2:collection Collection SummaryCollection|--list Orderly, repeatable|--arraylistThe underlying data structure is an array, query fast, and delete slowly.T

optimization algorithms ( three-digit method, the interval is small when using the direct insertion algorithm , "The previous blog detailed introduction of the optimization of fast sorting" has been relatively more efficient. Merge sort is also called the outer sort, the outside sort actually refers to the ability to sort the data outside the memory (on disk), the file of big data cannot be loaded directly

observers, that is, dependent objects, each time data changes, these 2 view will changeclassHexviewer (object):defUpdate (self, subject):Print 'hexviewer:subject%s has data 0x%x'%(Subject.name, Subject.data)classDecimalviewer (object):defUpdate (self, subject):Print 'decimalviewer:subject%s has data%d'%(Subject.name, Subject.data)if __name__=='__main__': Data1=

Basic data structures and examples for OPENCVThe strong mat types in the OpenCV are already familiar to us. Here are some of the basic data types that are commonly used in engineering. Including:VecScalarPointSizeRectRotatedrect 1. Vec class 1.1 Basic Concepts Vec is a template class that is used primarily to store numeric vectors. 1.2 usage (1) Accessing VEC ve

This article mainly introduces the basic concepts of stack and queue data structures and related Python implementations. the knowledge of first-in-first-out and later-in-first-out has become a common topic in computer learning: d. you can refer to the following to review the basic concepts of stack and queue: Similarities: From the perspective of "data structure

two positive operations; the same is true for +++i,++++i; we can measure the minus sign operation by the way:>>> i6>>> +++i6>>> ++++i6>>>-i-6>>>--i6>>>---i-6Consistent with the imagined results, great!Input/output (IO)When you want to write a "more interesting" small program, you will find that in addition to the three basic control structures and data types, the most you need is the IO function. Q: The ou

The HASHMAP data structure is a hash table (hash table)HashMap1) Array: Continuous address, Find Fast, but take up too much memory2) linked list: Address is not contiguous save space, look for arrays slower, delete and add fasterThe advantages of two data structures are assembledThe purpose of the array is to map the address using the hash function based on the k

Python algorithms and data structures--the maximum value of all sub-arraysXuan Soul Studio-Xuan SoulXuan Soul Studio Secretary Xuan Soul studio? YesterdayTitle: Enter an array of shapes with positive and negative numbers in the array. One or more consecutive integers in an array make up a sub-array, each of which has a and.The maximum value for the and of all sub-arrays. Requires a time complexity of O (n).

directed graph, just need to add one according to the direction you can. Adjlist.get (v). push (W); Adjlist.get (W). push (v); }//In order to facilitate observation, we can then implement a ToString method//Nothing to say, a double loop traversal of two arrays. this.tostring = function () {var s = ""; for (var i = 0;i So we've implemented the simplest part of the graph class--how to add vertices and edges. Will everyone feel a little bit simpler. Hey..... The fun is still in

SSDBA high-performance NoSQL database that supports rich data structures to replace Redis.Characteristics 100 times times the capacity of Redis instead of Redis database LevelDB network support, using C + + development Redis API compatible, support for Redis clients Suitable for storing collection data, such as list, hash, zset ... The la

The Redis database is a non-relational database, based on key/value pairs, loaded into memory at runtime, supports virtual memory for value, supports multiple data structures, supports persistence, is known for performance, and can be used for storage, caching, Message Queuing and other scenarios. The data structure maintained by the Redis runtime is mainly descr