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task 01 array - datawhale and Tianchi Example analysis 1. Sum of two numbers class Solution { public: vector<int> twoSum(vector<int>& nums, int target) { int n = nums.size(); for (int i = 0 ; i < n - 1; ++ i) for (int j = i + 1; j < n ;++ j) { if (nums[i] + nu ...

So far, there is only one bundle of files we have packaged js is such a js file. Then if the project is large, the js will become very large! This causes the first screen to take a very long time to load. Many of these codes do not need to be used immediately, which is a waste of resources. So we can separate the code and introduce it on demand ...

function flow ExecScan ExecScanFetch IndexNext[Top level loop function] [1]index_beginscan: (scandesc = index_beginscan generate scandesc (yes) index_beginscan_internal[getr] btbeginscan: initialization IndexScanDesc and BTScanOpaque IndexScanDesc scan = ... BTScanOpaque so = ... ...

preface Image size, flipping and affine transformation in opencv 1, Image size transformation Function prototype: void resize(InputArray src, OutputArray dst, Size dsize, double fx=0, double fy=0, int interpolation = INTER_LINEAR) src: input image dst: output image. The data type of image is the same as src dsize: output image s ...

System tutorial Take pytoch in 20 days Recently and Middle brother,Huige Carry out a small punch in activity, 20 days pytorch, which is the fourth day. Welcome to triple click. The outbreak of the novel coronavirus pneumonia in 2020 has caused many aspects of the lives of people of all countries. Some students are income, some students ...

Write in front Please read it first https://blog.csdn.net/qq_46640863/article/details/122684580 Compile the linux kernel. 1, Design content and specific requirements New Linux driver Add a driver (using memory to simulate the device) and use module compilation. requirement: (1) New drivers can be loaded and unloaded dynamically. (2) Use t ...

1, Redis installation download Redis 1. Decompress, compile and install # Decompress, compile and install (odc) [mca@clu01 software]$ tar -xvf redis-6.2.6.tar.gz (odc) [mca@clu01 software]$ cd redis-6.2.6/ (odc) [mca@clu01 redis-6.2.6]$ make (odc) [mca@clu01 redis-6.2.6]$ cd src (odc) [mca@clu01 src]$ sudo make install 2. Director ...

The previous article introduces the common communication methods between processes: nameless pipeline and named pipeline. This article introduces memory mapping. Memory mapping is very convenient when multiple processes access files to read and write. 1. Introduction to memory mapping mmap function The mmap function can map the files on the d ...

concept Keep alive yes Vue When it wraps dynamic components, it caches inactive component instances instead of destroying them. Similar to transition, keep alive is an abstract component: it does not render itself as a DOM element or appear in the parent component chain. effect In the process of component switching, the switched components a ...

preface The one-dimensional prefix sum is introduced earlier. The two-dimensional prefix sum is the online upgrade of the one-dimensional prefix sum. The one-dimensional prefix sum is reflected in the array, while the two-bit prefix sum is reflected in the matrix. 1, What are two-dimensional prefixes and? Based on the one-dimensional prefi ...