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1, Summary Static polymorphism: function overloading, calling the same function and passing different parameters will have different behaviors Dynamic polymorphism: when calling virtual functions, different objects will have different behaviors / forms Conditions for polymorphism: a. Override the virtual function of the parent class ...

I believe everyone must be familiar with mine sweeping! But do you believe that you can make a simple minesweeping game only with some basic knowledge of C language? hhh, today, I will lead you into mine sweeping and explore the mystery of its basic algorithm. 1, Basic ideas First of all, since we are playing games, we should design the corre ...

preface Generally speaking, we use spring security. By default, the front and back ends are integrated, such as thymeleaf or Freemarker. Spring security also comes with its own login page and allows you to configure the login page and error page. But now the separation of front and back ends is the right way. If the front and back ends are se ...

Dictionary features: 1. Disordered 2.key unique ps: similar to map in java 1, Dictionary creation Each key = > value pair of the dictionary is separated by colon, and each key value pair is separated by comma. The whole dictionary is included in curly brackets {}, with the format as follows: 1. _ dict={key:value} (common) 2. ...

modular Classification: standard module, user-defined module, third-party module Function: meet specific purposes and needs; For example: network management, access, encryption processing, mathematical calculation, data analysis, image processing. How to construct a module: Standard Module - directly use the command import; Custom module - pla ...

Reference 1: https://www.cnblogs.com/wujiaqing/p/10709207.html abs() all() any() bin() bool() bytearray() callable() chr() dict() dir() divmod() enumrate() eval() exec() filter() format() float() frozenset() globals() hasattr() hash() help() hex() id() input() int() isinstance() issubclass() iter() len() list() map() max() min() next() oct() o ...

LC031. Next Permutation 1, Title An arrangement of an integer array is to arrange all its members in sequence or linear order. For example, arr = [1,2,3], the following can be regarded as the arrangement of arr: [1,2,3], [1,3,2], [3,1,2], [2,3,1]. The next permutation of an array of integers refers to the next lexicographically ordered pe ...

1. Constructor overview (1) Introduction to constructor Constructor: it is a special method of class to complete the initialization of new objects; //Constructor definition method [Modifier ] Method name(parameter list ){ Method body; } (2) Constructor considerations ① The modifier of the constructor can be default or public, protecte ...

python completely adopts the idea of object-oriented. It is a real object-oriented programming language and supports the basic operations of object-oriented, such as inheritance, polymorphism and encapsulation. Everything in python is an object. python supports many programming paradigms, such as object-oriented, process oriented, functional pr ...

C language notes - day04 P34_ recursion 1. Application of recursion Hanoi 2. The essence of recursion In principle, recursion is the behavior of the function call itself. 3. Write recursive procedures need to pay attention to Recursive exit: the recursive program needs to set the end condition correctly, otherwise the recursive progra ...