Each time this parameter is referenced, a random integer between 0 and 32767 is generated. Assigning a value to this variable seeds the random number generator.
$RANDOM
返回 [0, 2] 我只要 [0, 1]0 1/3 概率, mod 2, 0
1 1/3 概率, mod 2, 1
2 1/3 概率, mod 2, 0
mod 2
后 2/3 概率是 0 了,这不公平吧?还是我哪里理解错了?