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Update 1.scala

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kamoshi 2019-11-27 02:36:20 +01:00 committed by GitHub
parent b6da8346a1
commit d1dca5328f
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1 changed files with 4 additions and 5 deletions
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2018/Scala/1.scala
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@ -9,8 +9,6 @@ val result1 = lines.foldLeft (0) { (acc, i) => acc + Integer.parseInt(i) }
println(result1) println(result1)
// Solution 2 // Solution 2
val hash = new mutable.HashSet[Int]()
def toLazyLoop[A](list: List[A]): LazyList[A] = { def toLazyLoop[A](list: List[A]): LazyList[A] = {
def toLazy[A](list: List[A]): LazyList[A] = { def toLazy[A](list: List[A]): LazyList[A] = {
list match { list match {
@ -21,11 +19,12 @@ def toLazyLoop[A](list: List[A]): LazyList[A] = {
toLazy(list) #::: toLazyLoop(list) toLazy(list) #::: toLazyLoop(list)
} }
def findFirstRepeat[A](lazylist:LazyList[String], acc:Int, hash:mutable.HashSet[Int]):Int = val hash = new mutable.HashSet[Int]()
def findFirstRepeat[A](lazylist:LazyList[String], acc:Int):Int =
if (!hash.add(acc)) acc if (!hash.add(acc)) acc
else lazylist match { else lazylist match {
case hd #:: tl => findFirstRepeat(tl, (acc + hd.toInt), hash) case hd #:: tl => findFirstRepeat(tl, (acc + hd.toInt))
} }
val result2 = findFirstRepeat(toLazyLoop(lines), 0, hash) val result2 = findFirstRepeat(toLazyLoop(lines), 0)
println("First repeat frequency: " + result2) println("First repeat frequency: " + result2)