Created
July 20, 2015 04:42
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| def pn(str: String): Int = pnPrime(str.split(" ").toList) | |
| def pnPrime(list: List[String]): Int = list match { | |
| case "+"::x::ys => x.toInt + pnPrime(ys) | |
| case _ => list.head.toInt | |
| } | |
| println(pn("1")) | |
| println(pn("+ 1 2")) | |
| println(pn("+ 1 + 2 3")) | |
| println(pn("+ + 1 2 3")) |
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