2013-02-28 77 views

回答

4
rand(9)  # this generator a number between 0 to 8 
rand(0 .. 9) # this generator a number between 0 to 9 
rand(1 .. 50) # this generator a number between 1 to 50 
#rand(m .. n) # m is the start of generator number range, n is the end of generator number range 
+0

在你想要产生随机数的地方使用rand。 – 2013-02-28 08:02:59

0

尝试:

Array.new(5){rand 10}.join 

优势:

上面的代码将产生5位随机数。您可以根据您想要的位数取代5

更多来自Generating Random Numbers in Ruby