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This article mainly introduces "how to achieve rapid sorting in c++". In daily operation, I believe many people have doubts about how to achieve rapid sorting in c++. Xiaobian consulted all kinds of materials and sorted out simple and easy operation methods. I hope to help you answer the doubts about "how to achieve rapid sorting in c++"! Next, please follow the small series to learn together!

Say something about quick sorting.

Quick sort, the most commonly used sort algorithm in practice, fast, efficient, in the N*logN of the same level of efficiency among the best.·

The basic idea is to divide the data to be sorted into two separate parts by sorting, all the data in one part is smaller than all the data in the other part, and then quickly sort the two parts of the data separately according to this method. The whole sorting process can be done recursively, so that the whole data becomes an ordered sequence.

This step is critical to change the sequence into the above form. Only by doing this step can we recursively call the left and right parts of the main element. Here is the code to implement this part:

int partition_sort(int arr[],int l,int r)//l is the leftmost of the array, r is the rightmost { int j=l;//Design flags int t=arr[l];//Set argument for(int i=l+1;i

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