Anonymous

// Assignment #: 10
//         Name: Your name
//    StudentID: Your id
//  Lab Lecture: Your lecture
//      Section: Your lab section
//  Description: The Assignment 10 class displays a menu of choices to a user
//               and performs the chosen task. It will keep asking a user to
//               enter the next choice until the choice of 'Q' (Quit) is
//               entered.

import java.io.*;

public class Assignment10
{
   public static void main(String[] args)
   {
      char input1;
       String inputInfo = new String();
       int operation2;
       String line = new String();

       //create a linked list to be used in this method.
       LinkedList list1 = new LinkedList();

       try
        {
         // print out the menu
         printMenu();

         // create a BufferedReader object to read input from a keyboard
         InputStreamReader isr = new InputStreamReader (System.in);
         BufferedReader stdin = new BufferedReader (isr);

         do
          {
           System.out.print("What action would you like to perform?\n");
           line = stdin.readLine().trim();  //read a line
           input1 = line.charAt(0);
           input1 = Character.toUpperCase(input1);

           if (line.length() == 1)   //check if a user entered only one character
            {
             switch (input1)
              {
               case 'A':   //Add String
                 System.out.print("Please enter a string to add:\n");
                 String str1 = stdin.readLine().trim();
                 System.out.print("Please enter an index to add:\n");
                 inputInfo = stdin.readLine().trim();
                 int addIndex = Integer.parseInt(inputInfo);
                 list1.addElement(addIndex, str1);
                 break;
               case 'D':   //Search for the Index of a String
                 System.out.print("Please enter a string to search:\n");
                 inputInfo = stdin.readLine().trim();
                 operation2=list1.searchElement(inputInfo);
                 if (operation2 > -1)
                   System.out.print("string found at " + operation2 + "\n");
                 else
                   System.out.print("string not found\n");
                 break;
               case 'L':   //List Strings
                 System.out.print(list1.toString());
                 break;
               case 'O':  // List Current Size
                 System.out.print("The current size is " + list1.size() + "\n");
                 break;
               case 'Q':   //Quit
                 break;
               case 'R':  //Remove String
                 System.out.print("Please enter the index of a string to remove:\n");
                 inputInfo = stdin.readLine().trim();
                 int removeIndex = Integer.parseInt(inputInfo);
                 System.out.println(list1.removeElement(removeIndex) + " was removed");
                 break;
               case 'T':   //Find the smallest
                 if (!list1.isEmpty())
                   System.out.print("The smallest is: " + list1.findSmallest()
                                  + "\n");
                 else
                   System.out.print("The list is empty\n");
                 break;
               case 'U':   //Remove all the occurence of a given string
                 System.out.print("Please enter a string to remove:\n");
                 inputInfo = stdin.readLine().trim();
                 int index = list1.searchElement(inputInfo);
                 if (index > -1)
                  {
                    list1.removeAllOccurrences(inputInfo);
                    System.out.print("All occurences of " + inputInfo 
                                + " removed\n");
                   }
                 else
                   System.out.print("string not found\n");
                 break;
               case '?':   //Display Menu
                 printMenu();
                 break;
               default:
                 System.out.print("Unknown action\n");
                 break;
              }
           }
          else
           {
             System.out.print("Unknown action\n");
            }
          } while (input1 != 'Q' || line.length() != 1);
        }
       catch (IOException exception)
        {
          System.out.print("IO Exception\n");
        }
    }

    /** The method printMenu displays the menu to a user **/
    public static void printMenu()
     {
       System.out.print("Choice\t\tAction\n" +
                        "------\t\t------\n" +
                        "A\t\tAdd String\n" +
                        "D\t\tSearch for Index\n" +
                        "L\t\tList Strings\n" +
                        "O\t\tList Current Size\n" +
                        "Q\t\tQuit\n" +
                        "R\t\tRemove String\n" +
                        "T\t\tFind Smallest\n" +
                        "U\t\tRemove All Occurrences\n" +
                        "?\t\tDisplay Help\n\n");
    } //end of printMenu()
}