 
					
				
			还有这里为什么不可以该为(len-1;len>0;len--)
 
					
				
			 2013-11-27 23:05
	    2013-11-27 23:05
   2013-11-28 11:48
	    2013-11-28 11:48
   2013-11-28 12:48
	    2013-11-28 12:48
   2013-11-28 13:23
	    2013-11-28 13:23
   2013-11-28 13:34
	    2013-11-28 13:34
   2013-11-28 17:08
	    2013-11-28 17:08
   2013-11-28 19:30
	    2013-11-28 19:30
   2013-11-29 11:07
	    2013-11-29 11:07