Flatten array

Citrusbyte

#Citrus


a = [[1,2,[3]],4] 

aflat = []

def flatten(a)
    astring = a.to_s
    test = astring.delete "["
    test2 = test.delete "]"
# I should be able to combine these two delete statements according to the Ruby docs, but it does not work for me, which would
#       eliminate a dummy variable. 
# I should also be able to string together some of th
    aflatstring = test2.split(',')
    aflat = aflatstring.map{|x| x.to_i}
    return aflat
end