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added another scala example

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Martin Thoma 2014-08-23 13:57:49 -04:00
parent 5dd282f596
commit accdf1507c
3 changed files with 59 additions and 0 deletions
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37
documents/Programmierparadigmen/scripts/scala/HighProduct.scala Normal file
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object HighProduct {
def main(arg: Array[String]) {
var max = List(BigInt(0), BigInt(0),
BigInt(0));
val digits = List(0, 1, 2, 3, 4, 5, 6,
7, 8, 9);
for (c <- digits.combinations(4)) {
// Sort the digits so that the
// highest number gets built
val a = c.sorted(Ordering[Int]);
val b = (digits filterNot a.contains).
sorted(Ordering[Int]);
// calculate number a
var anum = BigInt(0);
for ((digit, place) <- a.zipWithIndex) {
anum += digit *
scala.math.pow(10, place).
toInt;
}
// calculate number b
var bnum = BigInt(0);
for ((digit, place) <- b.zipWithIndex) {
bnum += digit *
scala.math.pow(10, place).
toInt;
}
// calculate number a
if (anum * bnum > max(0)) {
max = List(anum * bnum, anum, bnum);
}
}
println("%d • %d = %d".format(max(1),
max(2),
max(0)));
}
}