leetcode brush questions (127) - 1575. Count all feasible paths
gives you an array of distinct integers, where locations[i] represents the location of the ith city. At the same time, it gives you start, finish and fuel, which respectively represent the departure city, destination city and the total amount of gasoline you have initially.
In each step, if you are in city i , you can choose any city j such th ...
Posted by neonorange79 on Thu, 10 Nov 2022 01:19:00 +0300
Data Structure—Dynamic Order List
First, the concept of the sequence table
*(1)* The sequence table is a linear structure in which data elements are sequentially stored in a segment of storage units with consecutive physical addresses. Generally, array storage is used. Implement various functions on arrays
*(2)* Here we note that the sequence table has the word sequence b ...
Posted by echoofavalon on Wed, 12 Oct 2022 23:37:50 +0300
Step-by-step dismantling of React components - Swipe carousel
I have written one before A simplified version of the swipe carousel component , I didn't consider a lot of details and general parameter configuration at that time, the main thing was to record the implementation ideas, and there was no source code. I picked it up a few years ago, sorted it out, and packaged it into a component. There is ...
Posted by Coronach on Wed, 05 Oct 2022 12:01:14 +0300
Java Collection Framework System - The whole system of Collection and Map from practicality, comparison to underlying analysis
Java Collection Framework System Summary
Notice:
This article cites a large number of high-quality articles, and some of the applied ones have links to directly view the in-depth analysis of knowledge points.As for the content involving the code section, it is presented in the form of Demo + annotations. Demo mainly involves basic and common ...
Posted by mrobertson on Sun, 18 Sep 2022 21:24:48 +0300
Java advanced programming class set framework (collection class)
Introduction to the Class Set Framework
In actual development, no development can leave the array, but the traditional array is very cumbersome to use, and the length is its fatal flaw. Officially, due to the length problem, it is impossible to use it on a large scale, but it is far from being used during development. Without arrays, we ca ...
Posted by cmgmyr on Sun, 18 Sep 2022 21:19:40 +0300
R language - data structures
Dataset Concept
Different industries call the rows and columns of a dataset differently. Statisticians call them observation s and variable s, database analysts call them record s and field s, and researchers in data mining and machine learning disciplines call them example s ) and attribute s.
data structure
R has many object types for stor ...
Posted by harishkumar09 on Sat, 17 Sep 2022 21:36:31 +0300
birthday cake question
A problem description
Make a birthday cake of volume Nπ with M layers, each layer being a cylinder. Suppose the i-th layer of cake from bottom to top is a cylinder with radius Ri and height Hi. When I < m, RI > RI + 1 and hi > hi + 1. Since the cake maker needs to spread the cream, in order to save money as much as possible, it i ...
Posted by El_Dudereno on Thu, 08 Sep 2022 21:08:15 +0300
Data structure - c language to realize basic operations such as adding, deleting, searching and modifying the leading circular double linked list (super long and super detailed)
1, Basic cognition
What is a cycle
The last node of the linked list points to the head node, forming a ring. Therefore, any other node can be found from any node in the circular linked list.
What is a double linked list
Two pointers are stored in the structure of the linked list, one pointing to the predecessor node and the other pointing t ...
Posted by kidestranged on Wed, 07 Sep 2022 21:55:27 +0300
Analysis of LinkedList source code of List sub-interface of java collection framework
LinkedList
LinkendList is a two-way linked list and implements the Deque ue interface, which can be used as a queue. Although LinkendList is a linear structure, the data is not stored as a linear interface, but as data and address of the next node in each node, Cloneable interface, copy support, and java.io.Serializable support serialization a ...
Posted by bugcoder on Tue, 06 Sep 2022 20:59:47 +0300
Data structure - sorting
Data structure note Directory:
1. Introduction and time complexity 2. Linear meter 3. Trees 4. Fig 5. Find 6. Sorting
6.1 basic concepts
6.1.1 objectives
Order keywords
6.1.2 classification
Internal sort
Data elements are all in memory during sorting
External sort
During the sorting process, data is constantly moving bet ...
Posted by bibie on Sun, 21 Aug 2022 09:50:12 +0300