if(a>4) { val result = a } this is creating a second val named result that is only scoped (visible) inside the if block, so the return statement always returns the value defined on line 2. A val can not be reassigned so you would need to use a var if you needed to change … Read more
It should be like this: def createDiamond(size: Int) = { require(size % 2 != 0, “size must be odd”) def innerIterator(limit: Int) = { (0 until size).map{ column => if(column > ((size / 2) + limit) || column < ((size / 2) – limit)) “0” else “1” }.mkString(” “) + “\n” } val str = … Read more
Ok. So first you will need to convert first list to map. val l1 = List((1,1),(4,4),(5,4),(8,4),(9,5)) val l2 = List((1,4),(1,9),(5,9),(8,9)) val mapL1 = l1.toMap val requiredList = l2.map({ case (i, j) => (mapL1(i), mapL1(j)) })