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Merge sort and cardinality sort Merge sort Radix sorting Summary of common sorting algorithms Merge sort Merge sort is a sort method based on the idea of merge. The classic divide and conquer strategy is adopted in this algorithm (divide the problem into some small problems and solve them rec ...

Functions of three Synchronizers This paper mainly introduces three thread synchronizers, their functions are as follows: CountDownLatch: make sure that all sub threads are summarized after execution. There is a counter inside. After execution of a sub thread, count down and return; CyclicBarrier: a ...

An efficient algorithm is written to search a target value target in the m x n matrix. The matrix has the following characteristics: The elements of each row are arranged in ascending order from left to right. The elements of each column are arranged in ascending order from top to bottom. Example: The e ...

I really don't understand this: Basis: http : //www.madboa.com/geek/openssl/#key-rsa , you can generate a public key from the private key. openssl genrsa -out mykey.pem 1024 openssl rsa -in mykey.pem -pubout > mykey.pub My initial idea was that they were generated together. Does the RSA private key contain the sum? Or public key? ...

In the last article, we learned How to write a commodity futures plan entrustment tool , this is a semi manual trading strategy. So how can we implement an automatic plan delegation strategy? In this issue, let's implement and transform this tool into an automatic trading strategy.   Strategic thinking Similarly, the mechanism of automatical ...

Understanding timed and delayed tasks Scheduled ExecutorService#scheduleAtFixedRate() refers to execution at a fixed frequency, and period refers to the time between two successful executions.The time at which the previous task starts, after a period, detects whether the previous task has been completed, if the previous task has been completed ...

DirectX 12 is Microsoft's latest graphics API library, which is only supported on Win10 system (if it is not Win10, it must be upgraded to Win10). My biggest feeling about this API is that it is particularly complex, because it exposes many underlying methods. Even though I have learned DX9, I still ...

1. Introduction to read-write lock There is such a scenario in reality: there are read and write operations on shared resources, and write operations are not as frequent as read operations. When there is no write operation, there is no problem for multiple threads to read a resource at the same tim ...

I've always heard that memcpy has memory overlap. I want to see why it has this problem? glib version 2.15 #include <string.h> #include <memcopy.h> #include <pagecopy.h> #undef memcpy void * memcpy (dstpp, srcpp, len) void *dstpp; const void *srcpp; size_t len; { u ...

Catalog Pool technology -- custom thread pool 1. Why use thread pools? 1.1 characteristics of pool technology: 1.2 benefits of thread pool: 1.3 how to customize a thread pool 2. Three methods 2.1. Thread pool method of single thread 2.2. Fixed thread pool size method 2.3 me ...