// usage:  java Intro nums

// introductory program; reads integers from the command line,
// storing them in a linear linked list, maintaining ascending order,
// and then prints out the final list to the screen

// the overall class name must match the file prefix; i.e. the name of
// this file must be Intro.java

public class Intro  

{  // standalone Java programs must have a main() function, which is the
   // point where execution begins

   public static void main(String[] Args) {

      // note that locals have no public/private/... prefix; also, we
      // are using the fact that array objects, in this case Args, have  
      // "length" variables built in
      int NumElements = Args.length;

      for (int I = 1; I <= NumElements; I++)  {
         int Num;  
         // need to do C's "atoi()"; use parseInt(), a class method of 
         // the Integer class; inverse operation is Integer.toString()
         Num = Integer.parseInt(Args[I-1]); 
         // create a new node
         NumNode NN = new NumNode(Num);
         NN.Insert();
      }

      System.out.println("final sorted list:");
      NumNode.PrintList();
    
   } 
}