learning javascript data structures and algorithms

"Select Sort"The selection sort is based on a bubbling sort (Bubble sort) that has been improved: each visit process (pass) needs to be exchanged at most.Each visit process, to find the maximum value, when the end of the visit, the maximum value is exchanged to the correct position;Then continue to repeat the process in the remaining sublist until the n-1 visit is completed (n is the length of the list);At this point, the remaining elements in the list are automatically aligned to the correct po

,elemtype e){int j,k,l;K = max_size-1;if (i{return ERROR;}j = malloc_sll (L);//Call the function written above,if (j){L[j].data = e;for (l=1;l{K = L[k].cur;}L[j].cur = L[k].cur;L[k].cur = j;return OK;}return ERROR;}Delete operation650) this.width=650; "title=" 11.jpg "src=" http://s3.51cto.com/wyfs02/M02/57/28/wKioL1STg1TTn7fqAAHvw03C2fQ503.jpg "alt=" Wkiol1stg1ttn7fqaahvw03c2fq503.jpg "/>Sample codeStatus Listinsert (staticlinklist l,int i){int j,k;K

their definitions into a hash list; The second part lets the user enter a word, and the program gives the definition of the word.// 字典类function Dict () { this.hashTable = new HashTable(); this.save = save; this.find = find;}function save (word, description) { this.hashTable.put(word, description);}function find (word) { return this.hashTable.get(word);}// 示例let d = new Dict();d.save('Mazey', 'a strong man.');d.save('Cherrie', 'a beautiful girl.');d.save('John', 'unknown.');consol

result.So what do we do with the program language output?int sum =0,n = 100;for (int i=1;i{Sum =sum+i;}coutGaussian algorithmint i,sum=0,n=100;sum = (1+n) *N/2;cout Execute only onceWhat is an algorithm?A description of the solution steps for a specific problem, represented as a finite sequence of instructions in the computer, and each instruction represents one or more operationsFive basic featuresInput, output, poor, deterministic and feasibleInputAlgorithm Local area 0 or more inputsvoid Tes

Recommend a Visual Web site "Visual Algo": Url= ' https://visualgo.net/en/sorting 'This website gives the principles and processes of various sorting algorithms, which are visualized through dynamic forms. The related pseudo-code are also given, as well as the specific steps to execute to code."Bubble Sort"You need to repeatedly visit the sequence of columns that need to be sorted. The size of the adjacent two items is compared during the visit, and i

"Merge Sort" Here we use recursive algorithm to keep the list in two, base case is no element in the list or only one element, because this sub-list is bound to be a positive sequence, and then gradually merge the two sorted sub-list into a new positive sequence table, until all the elements sorted."This is a process from the bottom up (bottom-up)Divides the list from the middle into two sub-lists until it reaches the bottom, with only one element in the sub-list　　Then, the two sub-lists are mer

Implementation of the Stack// 栈类function Stack () { this.dataStore = []; this.top = 0; // 栈顶位置 相当于length，不是索引。 this.push = push; this.pop = pop; this.peek = peek; this.clear = clear; this.length = length;}// push: 入栈function push (element) { this.dataStore[this.top++] = element;}// pop: 出栈function pop () { return this.dataStore[--this.top];}// peek: 取栈顶元素function peek () { return this.dataStore[this.top - 1];}// clear: 清空栈function clear () { this.top = 0;}// leng

does not support the comparison size.-priority the priority counter, ensuring that the smallest element function in the queue (the most important) is always placed in _queue[0]. heapq.heappush()and the first element is heapq.heappop() inserted and deleted separately on the queue, the _queue first element of the _queue is always the smallest, ensuring that the queue _queue the first element with the highest priority.Reference: "Python Cookbook" 3rd EditionHttp://python3-cookbook.readthedocs.io/z

classic issues (including the Joseph Ring issue, the tower issue, the eight queens issue, and the knight travel issue), we will gradually unveil the algorithm principle hidden behind the data structure, it aims to help readers consolidate their knowledge reserves, activate their thinking skills, and ultimately break through the barriers that impede the improvement of programming capabilities. On the paper, you may have to learn more about it. Refinin

the average number of average months, the average of a particular week, and the averages of all weeks.Const MONTHDATA = function Monthdata () {//Initialize month data This.monthdata = (function () {Let arr = []; Let week = 4; Let day = 7; while (week--) {Arr[week] = []; while (day--) {Arr[week][day] = 0; } day = 7; } console.log (arr); return arr; })(); This.adddata = AddData; This.getmont

node1.next = node3; node3.previous = node1; node3.next = node2; node2.previous = node3; node2.next = node4; node4.previous = node2; }};DList.prototype.advance = function (n, item) { let currNode = this.find(item); while (n--) { this.goPrevious(currNode); }};// 示例let names = new DList();names.insert('Mazey', 'head');names.insert('Cherrie', 'Mazey');names.insert('John', 'Cherrie');names.insert('Luna', 'John');names.insert('Ada', 'Luna'

This article mainly introduces the data structure and algorithm in JavaScript (ii): Queues, queues are only allowed at one end of the insert operation, another to delete operations of the linear table, the queue is an advanced first out (FIRST-IN-FIRST-OUT,FIFO) data structure, Need friends can refer to the following A queue is a linear table that allows inserti

Summary In this article, I will introduce the basic operations of the data structure Stack and some of its applications. We will see the application of Stack matching detection in parentheses, expression evaluation, and function call. Recursion is a special function call. Because recursion is very important and difficult to understand in programming, I will explain my understanding of recursion. Finally, we will see how Stack and Recursion are used to

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

If the internal sorting methods are classified according to different principles in the sorting process, they can be roughly divided into five categories: insertion sorting, exchange sorting, selection sorting, Merge Sorting, and allocation sorting; the sorting process can be divided into three categories: 1. A simple sorting method with the time complexity of O (n2) 2. the time complexity of the improved sorting method is O (nlog2n). 3. The time Degree of the base sorting method is O (D * n

solving methods and expect to be confident in your ability to deal with problems, and you know the difficulty of learning some programs. The complexity of large-scale problems and the corresponding solutions greatly outweigh the underlying issues associated with the approach. This chapter focuses on two aspects of the content. First, review the frameworks that must be followed in the study of data

): Introduction to database systems (version 8)Original Author: C. J. Date Title: Database System Concepts, Fourth EditionTitle (Chinese): Database System Concept (version 4)Original Author: Abraham silberschat/Henry F. korth/S. sudarshan Mathematics (Mathematics)Title: discrete mathematics and Its Applications (th Edition)Title (Chinese): discrete mathematics and Its Application (fifth edition)Original Author: kenth H. Rosen Title: concrete mathematics: a foundation for computer science (second

Data structures and algorithms implemented by Python: Dual-end queue explanation; python data structures and algorithms This article describes the Python-implemented data structure and

the array is added with push, and then once reverse is executed, the unshift effect is achieved. Like what:1 The effect in the Google Chrome console output is as follows:　　From the running result, the order of the array elements has been reversed.2.4. Performance test of Reverse methodThe performance of reverse, and then to test:1 The effect in the Google Chrome console output is as follows:　　It can be seen from the running effect that the reverse method has high per

solving problems, it cannot be discussed in isolation.Algorithms can only play a role in an appropriate data structure. Different data structures affect algorithm selection and efficiency.Some scientists concluded that algorithm + Data Structure = ProgramWhat are the functions of