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@kozake
Last active December 10, 2015 02:29
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Project Euler Problem 8
/**
* Project Euler Problem 8
*/
object P8 {
private val LIST =
"73167176531330624919225119674426574742355349194934"+
"96983520312774506326239578318016984801869478851843"+
"85861560789112949495459501737958331952853208805511"+
"12540698747158523863050715693290963295227443043557"+
"66896648950445244523161731856403098711121722383113"+
"62229893423380308135336276614282806444486645238749"+
"30358907296290491560440772390713810515859307960866"+
"70172427121883998797908792274921901699720888093776"+
"65727333001053367881220235421809751254540594752243"+
"52584907711670556013604839586446706324415722155397"+
"53697817977846174064955149290862569321978468622482"+
"83972241375657056057490261407972968652414535100474"+
"82166370484403199890008895243450658541227588666881"+
"16427171479924442928230863465674813919123162824586"+
"17866458359124566529476545682848912883142607690042"+
"24219022671055626321111109370544217506941658960408"+
"07198403850962455444362981230987879927244284909188"+
"84580156166097919133875499200524063689912560717606"+
"05886116467109405077541002256983155200055935729725"+
"71636269561882670428252483600823257530420752963450"
def toList(s:String, n:Int):List[String] = if (s.length <= n) s :: Nil else s.take(n) :: toList(s.tail, n)
def calc(s:String):Long = s.map(_.toLong - 48).reduce(_ * _)
def answer():Long = toList(LIST, 5).map(calc(_)).max
}
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