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Scala - Remove duplicates from List

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Recursively remove duplicate elements from a List

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  1. object ListUtil
  2. {
  3.   def dedupe(elements:List[String]):List[String] = {
  4.     if (elements.isEmpty)
  5.       elements
  6.     else
  7.       elements.head :: dedupe(for (x <- elements.tail if x != elements.head) yield x)
  8.   }
  9. }
  10.  
  11. // example usage:
  12. ListUtil.dedupe(List("one", "two", "one")).foreach(println)

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