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February 22, 2017 15:05
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Solve the 3 daughters problem in a few Scala lines
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| val options = (for { | |
| a <- 1 to 36 | |
| b <- 1 to 36 | |
| c <- 1 to 36 | |
| if a*b*c == 36 | |
| } yield Vector(a, b, c).sorted).distinct | |
| val groups = options.groupBy(_.sum) | |
| val ambiguousOptions = groups.values.find(_.size > 1).get | |
| val solution = ambiguousOptions.find { case Vector(a, b, c) => | |
| c > a && c > b | |
| }.get | |
| println(solution.mkString(", ")) |
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