Is java.util.Random really that random? How can I generate 52! (factorial) possible sequences?

Question

I\'ve been using Random (java.util.Random) to shuffle a deck of 52 cards. There are 52! (8.0658175e+67) possibilities. Yet, I\'ve found out that the seed for

Answer 1

If you consider the number as just an array of bits (or bytes) then maybe you could use the (Secure)Random.nextBytes solutions suggested in this Stack Overflow question, and then map the array into a new BigInteger(byte[]).