Programmer Think

1. The concept of routing Concept of Routing: Back end Routing: for a normal website, all hyperlinks are URL addresses, and all URL addresses correspond to the corresponding resources on the server Front end Routing: for single page applications, the main way to switch between different pages is th ...

Article directory 7-1 cm to FT in (15 points) 7-2 and then what time (15 points) 7-3 three digits in reverse order (10 points) 7-4 BCD decryption (10 points) 7-5 table output (5 points) 7-6 mixed type data format input (5 points) 7-7 12-24 hour system (15 points) 7-8 overspeed judgment (10 points) 7- ...

This chapter focuses on the basics of NumPy. Because NumPy provides a very easy-to-use C language API, the data can be passed to the external class library written in the underlying language, and then the external class library will return the calculation results in the way of NumPy array. This feature ...

Runtime type information allows you to discover and use type information while the program is running. In Java, there are two main ways for us to recognize the information of objects and classes at run time: the first is "traditional" RTTI, which assumes that we have known all types at compile ...

Lambda expression To tell you the truth, when I first saw this word, it was very obscure. How to read it back and forth was very strange. Later, what you understand, of course, was to search it. Hahaha, it turned out to be that λ It allows functions to be passed as arguments, ← to hit the ...

Class 1 In the previous articles, we introduced the object-oriented programming of ES5. We know that before ECMAScript6 specification, there was no concept of class in JavaScript, only constructor was allowed to simulate class, and inheritance was implemented through prototype. This way of implementin ...

Wedge Now you are a developer of a game company. Now you need to develop a game called Dog and Human Warfare. Just think, Dog and Human Warfare requires at least two roles. One is human and the other is dog. People and dogs have different skills, such as people fighting with sticks and dogs. Dogs can bite people. How can you describe these diff ...

4.1 placeholder ": (1) An example of using placeholders in Shell scripts if [ $i -eq 1 ] #Conditional expression then : #If the if judgment statement is used in the Shell script, some operations are usually performed after the judgment is successful, but sometimes it is not known what operations are performe ...

Chapter IV Functions What we do in life is to have an idea of doing something in our mind instead of directly planning what happens in the first second and what happens in the second after what happens in the first second. It is clear that this is neither meaningful nor cumbersome.So I think the us ...

The so-called completion is that the number is exactly equal to the sum of the factors except oneself. For example: 6 = 1 + 2 + 3, where 1, 2 and 3 are factors of 6. This problem requires programming to find all the completions between any two positive integers m and n. Input format: Input two positive integers m and n (1 < m ≤ n ≤ 100 ...