将数组转换为list集合，然后list中重复元素删除将list中所有元素分别用迭代器和增强for循环打印出来
//案例// .已知数组存放一批QQ号码，QQ号码最长为11位，1先把数组转为集合。String[] strs ={"12345","67891","12347809933","98765432102","67891","12347809933"};LinkedList<String>list=new LinkedList<&g
