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20 lines
251 B
Nim
20 lines
251 B
Nim
discard """
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output: '''@[0, 2, 1]
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@[1, 0, 2]
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@[1, 2, 0]
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@[2, 0, 1]
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@[2, 1, 0]
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@[2, 0, 1]
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@[1, 2, 0]
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@[1, 0, 2]
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@[0, 2, 1]
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@[0, 1, 2]'''
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"""
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import algorithm
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var v = @[0, 1, 2]
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while v.nextPermutation():
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echo v
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while v.prevPermutation():
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echo v
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