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Most people do not understand the knowledge points of this article, "what are the sorting algorithms of the php array?" so the editor summarizes the following contents, detailed contents, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this article, "what are the sorting algorithms of the php array?"

1. Bubble sorting

Repeatedly visit the sequence to be sorted, compare the two elements in turn, and swap them if they are in the wrong order.

2. Select sort

First, find the smallest element in the unsorted sequence, store it at the beginning of the sorted sequence, then continue to find the smallest element from the remaining unsorted elements, and then put it at the end of the sorted sequence.

3. Insert sort

By building an ordered sequence, for unsorted data, scan from back to front in the sorted sequence, find the corresponding position and insert it.

4. Quick sort

The data to be sorted is divided into two separate parts through a sort, and all the data in one part is smaller than all the data in the other part.

5. Examples

$arr=array ($arr) {$len=count ($arr); / / the number of wheels that need to bubble in this layer of cycle control for ($item1terici)

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