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Principle, use and implementation of intelligent pointer in C + + Transferred from: https://www.cnblogs.com/wxquare/p/4759020.html 1 function of smart pointer Using heap memory in C + + programming is a very frequent operation. The application and release of heap memory are managed by programmers themselves. Programmers can improve the effic ...

State modeAllows an object to change its behavior when its internal state changes. Object appears to have modified its class-- Baidu EncyclopediaSimply put, state pattern is state machine design. It is mainly used for the same request to perform different functions under different conditions. Its function is equivalent to if else. significanceI ...

Some content sources: bestsort blog Recommended blog: CSDN: Nangong Yichen - thoroughly understand the two-dimensional tree array CSDN: Lv1_kangdi - 2D tree array summary and template The one-dimensional tree array sum[x] records the prefix and length of lowbit(x) from 1 to X The two-dimensional tree array sum [x] [y] records the sum of area ...

Simple knowledge of bit operation Several points to remember in bit operation are: If you want to go to the last place, use num% 2To remove the last bit, use num = num / 2If it is judged that a number is the power of 2, use (n & - n) = = n, which will be described in detail belowThe XOR of two identical numbers is 0, the XOR value of al ...

0 preparation Online C + + running tool How to use: copy the code in each question to the online running website above Chapter 1: sequential representation of linear tables 01 Title: suppose the sequence table is not empty. Find the minimum value and its subscript from the sequence table and return it by reference Idea: ① Application v ...

1, Subject content and requirements 1. Problem description With the improvement of modern living standards, household cars have increasingly become a necessity in life. Learn about riders' information to facilitate communication and organize activities among riders. The system requires the development of a riders Club software, which can ...

Link: https://ac.nowcoder.com/acm/problem/15029?&headNav=acm Source: niuke.com Time limit: 1 second for C / C + + and 2 seconds for other languages Space limitation: C/C++ 32768K, other languages 65536K 64bit IO Format: %lld Title Description The little fish spit bubbles and come out. Small fish will spit out two kinds of bubbles: big bub ...

Last Dynamic memory management Apply for memory by creating variables When memory is released depends on what kind of variable the variable is If it is a global variable, it will be released following the program If it is a static variable, it is also released with the program If it is a local variable, it is released following the code bl ...

catalogue Overview of functions: Functions: The function definition is divided into five steps: Function call: Value transfer: Common function styles: Declaration of function Function sub file writing Overview of functions: A large program is generally divided into several program blocks, and each module realizes specific functions ...

Private and public There are methods and member variables in a class. After the public keyword is identified, the methods and variables under public become public functions. After the private keyword is identified, the methods and member variables under the private keyword become private. By default, if public is not declared, all methods and ...