Using just Ruby I am trying to
Generate an array of random numbers
Create a new 2 dimensional array containing x amount of arrays filled with x amount of samples from the original number list.
This is what I have...
a = 1000.times.map{rand(100)}.to_a
b = 5.times.map{a.sample}
#=> [3, 96, 23, 45, 41]
I basically want to be able to generate what I did in b, x amount of times.
Is this possible?
Thank you for the comments everyone!
Just wrap your definition of b in another map:
a = 1000.times.map{rand(100)} # to_a is unnecessary here, map returns an array
b = 5.times.map{5.times.map{a.sample}}
a were used elsewhere in the program, but it was just plain wrong. If, for example, the first array contained 1,000 1's (unlikely as that may be), b would always have nothing but 1's, whereas I was just generating random values within the originally-specified interval.I don't have Rails installed at the moment, so here's a pure Ruby solution.
a = (0..1000).to_a.map! { rand(100) }
x = 2
b = (0..x).to_a.map! { a.sample(x) }
# [[83, 73], [55, 93], [57, 18]]
