Shulou(Shulou.com)06/02 Report--

What are the basic sorting algorithms in PHP? I believe many inexperienced people don't know what to do about it. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

1. Bubbling sort

Train of thought analysis: in a group of numbers to be sorted, for the currently unarranged sequence, the two adjacent numbers are compared and adjusted successively after going, so that the larger number sinks and the smaller one goes up. That is, whenever two adjacent numbers are compared and they are found to be in reverse order, they are exchanged.

Code implementation:

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

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