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