How about this?

Question 1

How about this simpler approach?

Question 2

If you want to submit for consideration a fast RNG, please see https://github.com/lemire/testingRNG

Daniel Lemire · Answer · Sat Apr 06 2019 04:20:53 GMT+0800 (China Standard Time)

If you want to submit for consideration a fast RNG, please see https://github.com/lemire/testingRNG