Select a random n values from an array that might have < n values

sample-n.rb

words = %w{foo bar baz}
n     = 10

# If we use sample, we get a random order but never
# more than 3 entries:
words.sample(n)
# => ["bar", "foo", "baz"]

# A solution:
n.times.map { words.sample }
# => ["baz", "bar", "bar", "foo", "foo", "bar", "bar", "foo", "bar", "foo"]

# Another:
words.cycle.take(n).shuffle
# => ["bar", "baz", "foo", "bar", "baz", "bar", "baz", "foo", "foo", "foo"]