Question

How to check whether a non-sequential array is a subset of another non-sequential array in Scala

Answer 1

object SubsetCheck {
  def isSubset(arr1: Array[Int], arr2: Array[Int]): Boolean = {
    // Convert the first array to a Set
    val set1 = arr1.toSet

    // Check if all elements of arr2 exist in set1
    arr2.forall(set1.contains)
  }

  def main(args: Array[String]): Unit = {
    val arr1 = Array(5, 1, 8, 12, 40, 7, 9, 100) 
    val arr2 = Array(8, 40, 9, 1)               // Subset array

    if (isSubset(arr1, arr2)) {
      println("Yes, arr2 is a subset of arr1")
    } else {
      println("No, arr2 is not a subset of arr1")
    }
  }
}

  
     
/*
run:
  
Yes, arr2 is a subset of arr1
 
*/

 

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