chapter5n9.java

JAVA源代码程序aashjkjhkjhkjhjkhkj

/**
 *
 * demonstration of nested loops (further modified inner loop - test version)
 *
 * Written by: Roger Garside
 *
 * First Written: 12/June/96
 * Last Rewritten: 2/Oct/96
 *
 */

import java.lancs.* ;

public class Chapter5n9
    {

    /**
     *
     * main
     *
     */

    public static void main(String[] args) throws Exception
        {
        GroupOfPeople computing = new GroupOfPeople() ;
        String s ;

        while (true)
	    {
	    System.out.println("Type a surname followed by 'return'") ;
         System.out.println("(type 'return' when there are no more surnames)") ;
            s = BasicIo.readString() ;

            if (s.length() == 0)
	        break ;

	    // explanation start HERE
            int i = 0 ;
	    boolean duplicateFound = false ;
	    System.out.println("TEST: starting inner loop: count=" +
						computing.getCount()) ;
	    while ((i < computing.getCount()) && (!duplicateFound))
	        {
	        System.out.println("TEST: start inner iteration: i=" + i) ;
		if (s.equals(computing.getSurname(i)))
		    duplicateFound = true ;
                i++ ;
	        System.out.println("TEST: finish inner iteration: i=" + i) ;
	        }
	    System.out.println("TEST: leaving inner loop: i=" + i) ;
            if (!duplicateFound)
	        {
	        // search did not find a match
	        computing.addSurname(s) ;
	        System.out.println("inserted surname " + s) ;
	        }
	    else
	        {
	        // search did find a match
	        System.out.println("WARNING: surname " + s + " duplicated") ;
	        System.out.println("not added to the list") ;
	        }
            // explanation finishes HERE
	    }

        System.out.print("There are " + computing.getCount()) ;
        System.out.println(" people in the group") ;
        for (int i = 0 ; i < computing.getCount() ; i++)
	    {
	    System.out.print("The " + (i + 1) + "th surname is ") ;
	    System.out.println(computing.getSurname(i)) ;
	    }
        } // end of method main

    } // end of class Chapter5n9