Scala Greedy AC solution

  • 0

    Too bad I have to use 2 vars, one to keep the current upper bound value, one to keep the result.
    Any ideas to eliminate the use of vars to make it more FP, I will be sure to give an upvote.

    object Solution {
        def findLongestChain(pairs: Array[Array[Int]]): Int = {
            var upper = Int.MinValue
            var res = 0
            pairs.sortBy(a => a(1)).map(
                pair => pair match {
                    case p if p(0) > upper => 
                        res += 1
                        upper = p(1)
                    case _ => 

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