LeetCode TwoSum Solution Scala

TwoSum.scala

// https://leetcode.com/problems/two-sum

object TwoSum {
  def apply(nums: Array[Int], target: Int): Array[Int] = {
    nums.view.zipWithIndex.map(x => {
      val el = nums.view.zipWithIndex.drop(x._2 + 1).collectFirst {
        case y if y._1 + x._1 == target => y
      }
      Array(Option(x), el)
    }).collectFirst {
      case e if e.forall(_.isDefined) => e
    }.head.map(_.get._2)
  }
}