#!/usr/bin/env ruby

lower = "abcdefghijklmnopqrstuvwxyz"
upper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
nums = "0123456789"
len = 10
times = 5
time = 0

until time == times
  out = ""
  until out.length == len
    which = rand(3)
    if which == 0
      char = lower.slice(rand(lower.length))
    end
    if which == 1
      char = upper.slice(rand(upper.length))
    end
    if which == 2
      char = nums.slice(rand(nums.length))
    end
    out << char
  end
  puts out
  time = time + 1
end