天使不喜欢看代码

package com.maodajun.javaeye2;

public class GuessNumber {
	String primitive ="";
	public GuessNumber(String primitive){
		this.primitive=primitive;
	}
        public GuessNumber(){
		
		List list = new ArrayList();
		String primitive = "";
		for(int i = 0 ; i < 26 ; i ++){
			char tmp = (char) ('A'+i);
			list.add( Character.toString(tmp));
			
		}
		int j =-1;
		for(int i = 0 ; i <10 ; i++){		 
			j =r.nextInt(list.size());
			primitive+=list.remove(j);
		}
		this.primitive=primitive;
	
		
	}
	
	public String guessOne(String guessone){
		if(primitive.equalsIgnoreCase(guessone) ){
			return primitive.length()+"a"+0+"b";
			
		}
		char[] oldchars = primitive.toCharArray();
		char[] guesschars = guessone.toCharArray();
		int a = 0 ; 
		int b =0;
		for(int i  = 0 ; i < oldchars.length ||i < guesschars.length ; i++ ){
			if(oldchars[i]==guesschars[i]){
				oldchars [i ]= '0';
				guesschars[i]='0';
				a++;
				
			}
		}
		for(int i = 0 ; i < oldchars.length ; i ++){
			
			if(guessone.indexOf(oldchars[i])>0){
				b++;
				oldchars[i]='0';
			}
		}
		
		
		return a+"a"+b+"b";
	}

}

package com.maodajun.javaeye2;

import junit.framework.TestCase;

public class GuessNumberTest extends TestCase {
	public GuessNumber gn= null;
	public static void main(String[] args) {
		junit.textui.TestRunner.run(GuessNumberTest.class);
	}

	protected void setUp() throws Exception {
		super.setUp();
	}

	protected void tearDown() throws Exception {
		super.tearDown();
	}

	/*
	 * Test method for 'com.maodajun.javaeye2.GuessNumber.guessOne(String)'
	 */
	public void testGuessOne() {
		gn = new GuessNumber("ABCD");
		assertEquals("4a0b",gn.guessOne("ABCD"));
		assertEquals("0a0b",gn.guessOne("EFGH"));
		assertEquals("1a0b",gn.guessOne("AEFG"));
		assertEquals("0a1b",gn.guessOne("EAFG"));

	}

}