Programmer Think

Python learning (I) variables Since the postgraduate study mainly uses Python and C + +, and has been busy with graduation design recently, the learning and sorting of Java language is the first step, and the next step is to complete the study of Python. In fact, most of the language specifications are interlinked. They are written here fo ...

Does the string on the fourth day of C language practice contain supplementary questions Title Description: Suppose there is A string A composed of various letters and another string B. the number of letters of B in the string is relatively small. What is the fastest way to find all the letters in small string B in large string A? For ...

subject Origin link describe You are now in charge of designing a new paper shredder. The general shredder cuts the paper into small pieces and becomes difficult to read. The new shredder you designed has the following characteristics: 1. Before each cutting, a target number of shredders should be given first, and a number should also be in ...

Java I/O flow 1, Classification of flow According to different operation data units, it is divided into byte stream (8 bit) and character stream (16 bit)According to the flow direction of data, it can be divided into input flow and output flow Abstract base classByte streamCharacter streamInput streamInputStreamReaderOutput streamOutputStrea ...

You are given a very large integer n, represented as a string,​​​​​​ and an integer digit x. The digits in n and the digit x are in the inclusive range [1, 9], and n may represent a negative number. You want to maximize n's numerical value by inserting x anywhere in the decimal representation of n​​​​​​. You cannot insert x to the left of the ...

preface C + + introduces the idea of object-oriented. Compared with C language, a class can better manage and operate some data structures. In C language, we use character array and string The library function in H is used to maintain a string. The data is separated from the method. Because the underlying space is maintained by itself, it may ...

Let's take a look first: About JSON number Cross reference relationship between golang data type and json type: bool, for JSON booleans float64, for JSON numbers string, for JSON strings []interface{}, for JSON arrays map[string]interface{}, for JSON objects nil for JSON null There is no int64 type in json. When deserializing, if you dire ...

Introduction: as we all know, there are two ways to create string objects: String name1 = "jack"; String name2 = new String("jack"); 1. String name1 = “jack”; Interpretation of "jack" is a string constant, also known as a string literal, which is located in the string constant poolname1 is a stack variable that points to ...

👉 Write in front 👈 The origin of this article is that when I searched the Python interview questions of major websites, I found that some of the interview questions in most articles are too basic (not installed by the author) 🍺 Ha), if you don't believe it, look below. Others are even more powerful. I don't know where to copy. They of ...

Topic overview Title Link: Ask me to do the problem Problem solution 1, General dynamic programming    in that sentence, the dynamic programming of string class can consider the state of the response problem of the first i characters, such as this problem and definition f ...