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...
how to prove that a binary tree with a depth of k (k > = 1) has at most nodes? ...
for the requirements on the front end, you need to write a search function to traverse the tree, function search(nodes, keyword){ `const nodes` } const searchedNodes = search(nodes, "1-1-2-1"); "1-1-2-1" * searchedNodes [...
A red-black tree can be equivalent to a fourth-order B-tree, and all kinds of operations of the fourth-order B-tree can be completed in log (n) time, so what is the meaning of the red-black tree? Or is there such an essential difference between them that...
there is a balanced binary tree. How to ensure balance by adding 2 new nodes? for example, the weights are as follows: 100, 92, 86, 56, 6, 10, 90 , how to build a balanced binary tree? ...
webpack.config.js file const path = require( path ); const webpack = require( webpack ); const ExtractTextPlugin = require( extract-text-webpack-plugin ); const checkerPlugin = require( awesome-typescript-loader ).CheckerPlugin; module.expo...
I am now doing a left picture, the layout of the text on the right, the fixed width of the picture (the unit is rem, uses the Flexible of Taobao to automatically set the font-size of html), and the adaptive width on the right. Now the problem is that I ...
what does a js file load mainly do? is there anything to deal with at this time of variable and function declaration ...
let message = await sequlize.models.chat_message.find({ where: { type: voice , them: video , phone: 17660590622 }, raw: true }) for (let index = 0; index < message.length; indexPP) { const element = message[index]; ...
how to design the daily database user information section. suppose the structure is as follows: CREATE TABLE users( `id` INT(11) PRIMARY KEY AUTO_INCREMENT, `nickname` char(20) COMMENT , `age` INT(4) COMMENT , `phone` char(11)...