13 lines
448 B
Nim
13 lines
448 B
Nim
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import bitops, math, sequtils, strutils
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const
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N = 30
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popcounts = toSeq(0..<N).mapIt(popcount(3^it))
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mapping = toSeq(0..<(2 * N)).mapIt((it, it.popcount))
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evil = mapping.filterIt((it[1] and 1) == 0).mapIt(it[0])
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odious = mapping.filterIt((it[1] and 1) != 0).mapIt(it[0])
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echo "3^n: ", popcounts.mapIt(($it).align(2)).join(" ")
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echo "evil: ", evil.mapIt(($it).align(2)).join(" ")
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echo "odious:", odious.mapIt(($it).align(2)).join(" ")
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