1. Core and causes of memory leakage
Memory leak(C/C++)
Functions involved:
1 malloc/calloc/relloc new
2 free delete
Its core is whether there is distribution or not Memory allocation and release did not match
2 hazards of memory leakage
The space above the heap is constantly eroded by the user space. When malloc applies ...

Posted by Dongowarrior on Sun, 24 Apr 2022 08:15:19 +0300

You can also go to the program coffee( https://meta.chengxuka.com ), open the screen question section of the University. You can not only have answers and explanations, but also answer questions online.
Title 1: what is a file pointer? What are the benefits of accessing files through file pointers?
Answer:
In the buffered FILE system, the key ...

1. Insert sort
2. Hill sort
3. Select Sorting
4. Heap sorting
5. Bubble sorting
6. Quick sort
7. Merge and sort
8. Counting and sorting
---------------
Insert sort
This sort was originally very simple, as shown in the figure:
Let's first insert 9 as an ordered array. It's larger than 8, so swap positions
Β
At this time, there i ...

Posted by CountryGirl on Sat, 23 Apr 2022 11:46:10 +0300

The previous blog introduced various function interfaces and uses of list. This blog implements a simple list here to further deepen the understanding of list.
frame
Unlike the previous vector, list uses a two-way lead link for data storage, so you need to define a structure to store nodes first.
template<class T>
struct ListNode ...

Posted by kanikilu on Sat, 23 Apr 2022 10:24:26 +0300

catalogue
1. What is a thread
1.1 process and thread
1.2 threads
1.3 development history of threads
2. How to create and use threads
2.1 pthread_ The create function creates a thread
2.2Β pthread_ Use of the create function
2.3} when the main thread ends, the branch thread will also end
2.4) multiple threads in the same process sha ...

Posted by denzlite on Sat, 23 Apr 2022 09:44:56 +0300

catalogue
π€1. What is function recursion
π€1) Recursive definition
π€2) Recursion is the main way of thinking (making big things small)
π€3) Advantages of recursion
π2. Two necessary conditions of recursion
π1)
π2)
β€οΈ3. Introduction to exercises
β€οΈ1) Print each bit of an integer (recursive implementation)
β€οΈ2) factorization of n (recursi ...

Posted by agadgil on Sat, 23 Apr 2022 07:30:52 +0300

1, Dynamic programming concept
The dynamic programming algorithm is similar to the divide and conquer method. Its basic idea is to decompose the problem to be solved into several sub problems. First solve the sub problems, and then get the solution of the original problem from the solutions of these sub problems.
Different from the divide ...

Posted by rane500 on Sat, 23 Apr 2022 05:56:27 +0300

Sort Template
Quick Sort and Merge Sort of Primary Records
Quick sorting mainly deals with the left and right ends before recursion
Merge sort is recursive first, on both the left and right ends of the process
Topic Overview:
Give you an integer column of length n.
Please use Quick Sort to sort this column from smallest to larges ...

Posted by dspeer on Fri, 22 Apr 2022 20:02:54 +0300

Introduction of this issue π
This paper mainly introduces how to quickly screen prime numbers, and explains in detail the N states of trial division and screening π.
catalogue π
prefaceTrial division
Realm 1 (Trial Division from 2 - (n-1))Realm 2 (excluding the sum of multiples of 2)Realm 3 (Trial Division from 2 to sprt(n)) Screenin ...

Posted by bdbush on Thu, 21 Apr 2022 20:42:58 +0300

1, One dimensional array creation and initialization.
1. An array is a collection of elements of the same type. How to create an array:
type_t arr_name [const_n]; //type_t is the element type of the index group //const_n is a constant expression that specifies the size of the array
Instance of array creation:
//Code 1 int arr1[1 ...

Posted by bigMoosey on Wed, 20 Apr 2022 09:43:33 +0300