in a plan, there are many points and some points will be connected. Please group these points. The grouping rule is: 1) there is no connection between groups 2) there must be connections between points within groups how to implement such a groupin...
topic description this problem occurs when individuals use BFS. I am puzzled. Please advise about the results . The code is as follows: -sharpinclude<iostream> -sharpinclude<stdlib.h> -sharpinclude<stdio.h> -sharpinclude<v...
problem description var datas = [{ "indexName1st": "", "indexName2th": "", "indexName3rd": "", }, { ...
such as the title: it is necessary to traverse all the branch paths of the tree structure from a two-dimensional array with a parent-child structure to form a new array. It is best to use php language to find an algorithm the original array is . $array...
recently encountered a requirement that the data structure is a tree structure. is when I click on a child node and need to get an attribute value for all nodes of the corresponding branch. The data structure is shown in the following figure. for...
The scenario is the operation of a Huffman coding tree. The so-called Huffman coding is to re-encode the characters in the text with 0 and 1 in a certain way, in which more characters use fewer digits. For example, the letter e appears a lot in this tex...
https: www.cnblogs.com skywa. how do I correct the color when the two red nodes are transferred to the right in the last picture? I look at other materials, the legend Reagan node and its right child node are black, so there is no problem, but in t...
data structure, graph, single linked list storage problem. ...
this is a linked list recursive flip. at line 146, newNode, list- > next, newNode- > next- > next, all three addresses are the same. but after 146lines list- > next = NULL only changes the content of newNode- > next- > next Why didn t newNode beco...
about the above concepts connected components are maximal connected subgraphs in an undirected graph how to understand the polar Dalian Tongzi diagram? In particular, the two words "Maxima ", according to 5-5b), are both components, so how c...
import requests from lxml import html import time headers = { User-Agent : Mozilla 5.0 (Windows NT 10.0; WOW64) AppleWebKit 537.36 (KHTML, like Gecko) Chrome 55.0.2883.87 UBrowser 6.2.4094.1 Safari 537.36 } url = http: finance.jrj.com.cn 2018 01 ...
now a lot of artificial intelligence is some API calls underlying data structures should we use traditional data structures, such as linked lists, binary trees, etc. ...
topic description PTA - MOOC---2018WPLWPL : the maximum length of code M is equal to 63. What exactly does this mean? doesn t N maximum 63 mean that the length of the code should not reach 63? How could that be, wrong answer?? ...
for example, there is such an array of objects let data = [ { title: , tagName: h1 }, { title: , tagName: h1 }, { title: , tagName: h2 }, { title: , tagName: h3 }, { title: , t...
1010 derivation of unary polynomial Design function to find the derivative of unary polynomial. (note: the first derivative of x ^ n (n is an integer) is nx ^ n (n-1).) input format: enter polynomial non-zero coefficients and exponents in an exponent...
binary tree is used for sorting, searching, and so on. Multi-tree is mainly used for files and databases, because of its small height, it can reduce the number of disk io. so the question is, since multi-tree is so good, why not replace the application...
when designing an attachment storage table for a system, do you use decentralized storage of information to each required table? Or do you centrally store the attachment information in a table and then associate it in the table you need to use? Or are t...
ArrayList is based on an array. When deleting, the get position is O (1), and the delete complement is O (n). LinkedList is based on a linked list, and when deleted, the location is O (n), and the deletion is O (1). The operation of inserts is the sam...
enter two integer sequences, the first representing the push-in order of the stack, and the second indicating whether it is the pop-up order of the stack. It is assumed that all the numbers pressed are not equal. for example, stack pressing order: 1. T...
for example, I have a set of data [ { time : 2018-03-01 , data : 1, }, { time : 2018-02-02 , data : 2, }, { time : 2018-01-01 , data : 3, }, { time : 2017-12-01 , data : ...
RT. the demand scenario is like this: made an app, notification of information + e-commerce for free, but I don t know what to push every day, so I wondered if I could monitor the peer s app notification, and then I also push this. There s really ...
state.js: const state={ article:localStorage["article"]?JSON.parse(localStorage["article"]): [], collections:localStorage["collections"]?JSON.parse(localStorage["collections"]): [], carts:localStorage[&...
A web page opened on an iPhone (no matter what browser) does not support the default selection of the select tag, such as < select > <option value="1">< option> <option value="2" selected>< option> <optio...
A shopping page. 10,000 lines of js. There is no architecture. Naked, how to use design patterns to make the code beautiful, concise, easy to maintain? ...
as shown in the figure below, I wrote the angular code in vscode . I declared a bunch of interfaces. How can I make these interfaces implemented automatically? (the currently installed plug-ins are: Angular 7 Snippets ) ...