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/**ÎÒÕâÖ»½² ListArray ,ListedList,HashMap
//ListArray ËüÊÇÒ»¸öʵÏÖÁËList½Ó¿ÚµÄÀà ,List¼Ì³Ðcollection½Ó¿Ú
//µ÷ÓÃimport java.util.ArrayList°ü,(ÕâÀïÁ½ÕßÈÎÑ¡ÆäÒ») ÍêÕûµÄjava¼¯ºÏ´æ·ÅÔÚjava.util°üÖÐ
//ÌØµã:
1>.ListÊÇÓÐÐòµÄ¼¯ºÏ
2>.List¿ÉÒÔÓÐÖØ¸´µÄÔªËØÖµ
3>.ʹÓÃË÷ÒýÀ´¾«È·µÄ·ÃÎÊÔªËØÖµ,
4>.ListÄܹ»¾«È·µÄ¿ØÖÆÃ¿¸öÔªËØ²åÈëµÄλÖÃ
//Óŵã
1>.ʵÏÖÁ˶¯Ì¬Êý×飬±éÀúÔªËØºÍËæ»ú·ÃÎÊÔªËØµÄЧÂʸߣ¨ÏÂÃæ¾ÙÀý±éÀúÔªËØ£©
Ò»£¬ListÓëListArray Óï·¨  ×¢Òâ±¾ÈËÊÇÓÃStringÀàÐ͵ÄÊý¾Ý ´ó¼Ò¿ÉÒÔ×Ô¶¨¶ÔÏó
  List list= new ListArray();
//Ìí¼ÓÒ»¸öÔªËØ
  String str="123";
  list.add(str); //ÆðʼλÖôÓ0¿ªÊ¼,·µ»Ø²¼¶ûÖµ
//·µ»Ø¼¯ºÏÖеÄÔªËØ¸öÊý
   list.size(); //·µ»ØintÀàÐÍ
//¸ù¾ÝË÷Òýȡֵ,·µ»ØObjecLÀàÐÍ
  String s=(String)list.get(0);//´«ÈëµÄÊÇintÀàÐÍË÷Òý£¬ÕâÀïÎÒÊÇÓÃString ÀàÐÍ ,ÐèҪת»»
// ÔÚÖ¸¶¨µÄË÷ÒýÌí¼ÓÖ¸¶¨µÄÔªËØ
  list.add(1,"123456");  //×¢Òâ²»ÄÜûÌí¼Ó1ÔªËØÇ°Ìí¼Ó2ÔªËØ,ÕâÑùÔÚÔËÐÐʱÒý·¢Òì³£
// ²é¿´ÔªËØÊÇ·ñ´æÔÚ
 list.contains(str); //·µ»Ø²¼¶ûÀàÐÍÊý¾Ý
 //ɾ³ýÔªËØ
 list.remove(str); //·µ»Ø²¼¶ûÀàÐÍÊý¾Ý
 
/****±éÀúListArray******/
  for(int i=0; i<list.size();i++){
        System.out.println(list.get(i));
  }
 
¶þ£¬ListÓëLinkedListÀà
 // Óï·¨£º
   LinkedList listed= ne LinkedList();
   String c ="123";
   String b ="123";
   String e ="123";
 //Ôö¼ÓÔªËØ
 1>Ôö¼ÓÍ·²¿ÔªËØ
   listed.addFirst(c);
 2>Ôö¼Óβ²¿ÔªËØ
  listed.addLast(b);
 //»ñÈ¡ÔªËØ
 1>»ñÈ¡µÚÒ»¸öÔªËØ
 String st=(String) listed.getFist();
  2>»ñȡβ²¿ÔªËØ
  String st1 =(String) listed.getLast();
 //ɾ³ýÔªËØ
 1>ɾ³ýµÚÒ»¸öÔªËØ
  listed.removeFisrst();
 2>ɾ³ýβ²¿ÔªËØ
  listed.removeLast();
 *******ListedListËüÒ²¾ßÓÐListArrayµÄ·½·¨******
  Ó¦ÕâÑù´´½¨
 List list= new ListedList(); //ÕâÑùÖ»ListArrayÖеķ½·¨
 Listed


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