Programmer Think

Introduction Priority queue is a widely used data structure in practical projects. Whether it is in the process scheduling of the operating system or in related graph algorithms such as Prim algorithm and Dijkstra algorithm, we can see the appearance of priority queue. In this paper, we will analyze the implementation principle of priority queu ...

Usually, we often use Task in our development. Many of the later. net versions are related to Task. For example, asyn,await has Task. We seldom pay attention to Thread. Task has brought us a lot of convenience. We pay less attention to the process of execution and more attention to logic. But sometimes, there are applications. And we have to co ...

JavaScript strings are used to store and process text. So when you write JS code, she always goes hand in hand, when you process user's input data, when you read or set the attributes of DOM objects, when you operate Cookie, when you convert different Date s, and so on, countless; and her many API s, there are always some impulses that people d ...

The pictures are all from Mucho. com, just for learning records. 1. Binary Search Tree It can also be called a binary search tree. It can not only find data, but also insert and delete data efficiently. Features: The key value of each node is larger than that of the left sub-node and smaller than that of the right sub-node. Note that it ...

Links to the original text Lock framework is a new addition to jdk1.5. It works as synchronized, so it can be compared with synchronized when learning. In this paper, we first make a simple comparison with synchronized, and then analyze the Lock interface and the source code and description of ReentrantLock. Specific analysis of other Lock impl ...

Preface Recently, in learning the source code of vue2.0, I just started to look at the source code of vdom, but I really can't find the direction, because it is added to the implementation of vdom.Many hooks of vue2.0 itself make reading more difficult. So I saw the first line saying that vdom of vue2.0 is snabbdom.On the basis of that, snabbdo ...

The function of ln is to create a synchronous link for a file in another location. When using the same file in different directories, we don't need to put the same file in each directory. We just need to put the file in a fixed directory, and then link it with ln command in other directories. We don't need to occupy disk space repeatedly. 1. ...

Diff is used to find out the different contents of a file. In particular, diff prints out changes to each line on the command line for two different versions of the same name file, and its latest version also supports comparing binary files. The patch program in Linux system can update the file content of a.c to b.c according to the output of ...

Links: https://ac.nowcoder.com/acm/contest/984/D Source: Niuke.com Hungry cattle Time limit: C/C++ 1 second, 2 seconds for other languages Space limitations: C/C++ 32768K, other languages 65536K 64bit IO Format: %lld Title Description Farmer John has N (1 <= N <= 5,000) cows, each with a positive integer number of no more than 32 binary d ...

Code writing is a bit cumbersome, welcome to correct~ Topic Source: Cyber Code Network Buy candy (Beijing East 2016 intern real topic) Topic Description A candy company specializes in the production of children's candies. The most popular candies for children are A1 and A2, which are packaged in box. The volume of packaged A1 candy is one ...