/*The user of the program inputs an integer, the maximum size of
  the list. Thereafter, the user can input the following commands:
		a  n    add String n to the list
		d  n    delete String n from the list
		?  n	report whether n is in the list
		#		print the size of the list
		p		print the list
		q		quit
*/

import java.io.*;

public class CUCSApplication {
	
public static void main(String args[]){
	// initialize Text object in to read from standard input.
		TokenReader in = new TokenReader(System.in);
		
	String cmd;		// Last command read from input
	String val;		// argument of command (if it has one)
	List list;		// The test list
	int	k;
	
	// Request max size of list, read it in, and create the list
		System.out.println("Enter max size of list");
		System.out.flush();
		list= new List(in.readInt());
	
	// Process commands
		System.out.println("Enter commands (q to stop)");
		System.out.flush();
		cmd= in.readString();
		// Invariant cmd is the next command to process; its
		//           argument has not been read in.
		while (!cmd.equals("q")) {
		  // Process command cmd
			if (cmd.equals("a")) {
				// The command is: Add next input String to list
				val= in.readString();
				list.add(val);
				}
			else if (cmd.equals("d")) {
				// The command is: Delete next input String from list
				val= in.readString();
				list.delete(val);
				}
			else if (cmd.equals("?")) {
				// The command is: Report whether next input String is in list
				val= in.readString();
				System.out.print(val + " is ");
				if ( !list.isIn(val))
					System.out.print("not ");
				System.out.println("in list");
				}
			else if (cmd.equals("#")) {
				// The command is: Report size of list
				System.out.println("Size is: " + list.size());
				}
			else if (cmd.equals("p")) {
				// Print the list
				System.out.println("List is: " + list.toString());
				}
			else {
				System.out.println("Unrecognized command: " + cmd);
				}
			cmd= in.readString();
			}
		
		// Wait for user to enter input to ensure console window remains visible
			in.waitUntilEnter();
		}
}