Specific implementation in random () (including the implementation of the seed array)

How does the random function return a random number?

See the implementation below:

An internal method is called:

In addition, you can initialize the seed array in the random constructor:

Finally, some variable definitions are involved:

The initialization of the seed array is a little troublesome. It is not clear why 55 and 21 are used. It is estimated that a specific random number fetch method is defined.

 

Interesting. The purpose of this article is to check the effect of using live writer to send images on cnblog ..