## Finding the product and sum of two univariate polynomials (C language)

The design function calculates the product and sum of two univariate polynomials.
Input format:
The input is divided into two lines. Each line gives the number of nonzero terms of polynomials, and then enters a coefficient and index of nonzero terms of polynomials (the absolute value is not more than 1000 integers) in exponential descending ...

Added by **Operandi** on *Thu, 02 Apr 2020 22:22:02 +0300*

## Example demo: How to simplify the OD security strategy in production?

Pod security policy is critical to enhance K8S cluster security.This article will continue with the previous article on Pod security.
First, it briefly describes how to associate a Pod with a Pod security policy and uses RBAC to show the steps.It then describes how to enable the default PSP in Rancher and create a custom PSP.Finally, a tool wi ...

Added by **JeDi58** on *Thu, 02 Apr 2020 12:38:22 +0300*

## The difference between sqlite query and rawQuery

query
public Cursor query(boolean distinct, String table, String[] columns,
String selection, String[] selectionArgs, String groupBy,
String having, String orderBy, String limit, CancellationSignal cancellationSignal)
//10 parameters
//distinct: set to true, each row must have u ...

Added by **ChrisDarl** on *Thu, 02 Apr 2020 09:37:46 +0300*

## In depth and simple C-structure: an example of the structure of encapsulating Ethernet heartbeat packet

Catalog
1. Application background
2. Structure analysis
2.1. The structure exists in the stack
2.2. The structure does not need to be released manually
3. Package heartbeat package structure
4. Structure static help class
5. Does the new structure exist in the heap or stack?
5.1. Structure without formal parameters
5.2. Structure with par ...

Added by **MnM333** on *Wed, 01 Apr 2020 23:41:55 +0300*

## Simulation Implementation of strncpy,strncat,strncmp

[simulate strncpy], [simulate strncat], [simulate strncmp]
All three functions are implemented in bytes
[strncpy]
char* strncpy(char* destination,const char* source,size_t num);
Copy num characters from the source character to the target space. If the length of the source string is less than num, add 0 to the back o ...

Added by **jlryan** on *Wed, 01 Apr 2020 13:49:04 +0300*

## Little sunflower mother's class begins: "SparseArrays source code analysis"

Let's take a look at the official introduction of SparseArrays
/**
* SparseArrays map integers to Objects. Unlike a normal array of Objects,
* there can be gaps in the indices. It is intended to be more memory efficient
* than using a HashMap to map Integers to Objects, both because it avoids
* auto-boxing keys ...

Added by **ElkySS** on *Tue, 31 Mar 2020 00:29:36 +0300*

## HDU 3949 XOR (linear basis, template)

Description
XOR is a kind of bit operator, we define that as follow: for two binary base number A and B, let C=A XOR B, then for each bit of C, we can get its value by check the digit of corresponding position in A and B. And for each digit, 1 XOR 1 = 0, 1 XOR 0 = 1, 0 XOR 1 = 1, 0 XOR 0 = 0. And we simply write this operat ...

Added by **DrDankWD** on *Sun, 29 Mar 2020 20:28:20 +0300*

## splay template Luogu 3369

Title Description
You need to write a data structure (refer to the title of the title) to maintain some numbers. The following operations are required:
Insert xx number
Delete xx number (if there are more than one same number, only one will be deleted)
Query the ranking of xx numbers (the ranking is defined as the number of ...

Added by **jstinehelfer** on *Thu, 26 Mar 2020 18:25:58 +0200*

## Data structure python recursion

recursion
Function directly or indirectly calls the function itself, which is called a recursive functionThree elements of recursion:1) The recursive algorithm must have a basic ending condition (to solve the problem of minimum scale directly);2) The recursive algorithm must be able to change the state to the basic end condition (reducing the ...

Added by **assafbe** on *Wed, 25 Mar 2020 18:25:14 +0200*

## ES6 string extension + regular extension + numerical extension

Template string
``Back quote
var cyy={
name:"cyy",
age:18,
say:function(){
console.log('My name is'+this.name+',I am this year'+this.age+'year');
},
say2:function(){
console.log(`My name is`+this.name+`,I am this year`+this.age+`year`);//Template strings can replace single or ...

Added by **inrealtime** on *Wed, 25 Mar 2020 11:16:24 +0200*