Add Sleep Sort in Scala

.gitignore

@@ -28,3 +28,7 @@ package-lock.json
 
 # F#
 Program.fs
+
+# scala
+.metals
+.scala-build

archive/s/scala/SleepSort.scala

@@ -0,0 +1,48 @@
+import scala.collection.mutable.ListBuffer
+import scala.concurrent._
+import ExecutionContext.Implicits.global
+import scala.concurrent.duration._
+
+object SleepSort {
+  def main(args: Array[String]): Unit = {
+    var result = invalidChecker(args)
+
+    if(!result){ // After going through checker, it will output result to procede with SleepSort or not
+      // println(result)
+      println("Usage: please provide a list of at least two integers to sort in the format \"1, 2, 3, 4, 5\"")
+    } else {
+      val numbers = args.flatMap(_.split(",")).map(_.trim).filter(_.nonEmpty).map(_.toInt)
+      println(sleepSort(numbers))
+    }
+  }
+
+
+  // Checking for formating, empty array, and Non-numeric values
+  def invalidChecker(args: Array[String]): Boolean = args match {
+    case null | Array() => false  // "No Input"
+    case arr if arr.forall(_.isEmpty) =>  false //"Empty Input"
+    case arr if arr.forall(_.length == 1) && arr.length == 1 => false //"Invalid Input: Not A List"
+    case arr if !arr.exists(_.contains(",")) => false //"Invalid Input: Wrong Format"
+    case _ =>  true
+  }
+
+  // delaying time to add a value to list base on it weight
+  def sleepSort(args: Array[Int]): String = {
+    val delayTimer: Long = 100L
+    val output = new ListBuffer[Int]()
+
+    val futures = args.map { num =>
+      Future {
+        blocking {
+          Thread.sleep(num * delayTimer) // Delay execution
+        }
+        output.synchronized {
+          output += num
+        }
+      }
+    }.toList // Convert Array to List to fix type mismatch
+
+    Await.result(Future.sequence(futures), Duration.Inf) // Wait for all futures
+    output.mkString(", ") // Format output correctly
+  }
+}