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#!/usr/bin/ruby
class Array
# call-seq:
# ary.shuffle! -> ary
# ary.shuffle!(random: rng) -> ary
#
# Shuffles elements in +self+ in place.
#
# a = [ 1, 2, 3 ] #=> [1, 2, 3]
# a.shuffle! #=> [2, 3, 1]
# a #=> [2, 3, 1]
#
# The optional +rng+ argument will be used as the random number generator.
#
# a.shuffle!(random: Random.new(1)) #=> [1, 3, 2]
def shuffle!(random: Random)
__builtin_rb_ary_shuffle_bang(random)
end
# call-seq:
# ary.shuffle -> new_ary
# ary.shuffle(random: rng) -> new_ary
#
# Returns a new array with elements of +self+ shuffled.
#
# a = [ 1, 2, 3 ] #=> [1, 2, 3]
# a.shuffle #=> [2, 3, 1]
# a #=> [1, 2, 3]
#
# The optional +rng+ argument will be used as the random number generator.
#
# a.shuffle(random: Random.new(1)) #=> [1, 3, 2]
def shuffle(random: Random)
__builtin_rb_ary_shuffle(random);
end
end
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