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HchanV2EX member #108545, joined on 2015-04-01 14:50:23 +08:00 |
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Jun 26, 2015 Replied to a topic by Tiande › Python › 这段 杨辉三角 的算法，真漂亮... |
lazy val tri: Stream[List[Int]] = List(1) #:: tri map {s => (0 :: (s :+ 0)).sliding(2).toList.map(_.sum)}
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