tmp.add("1")
tmp.add("2")
tmp.add("3")
tmp.add("4")
For(Iterator it=tmp.iterator();it.hasnext();){
String item=(string)it.next;
System.out.println(item);
}
现在的答案是
1
2
3
4
要如何才能只show 出1 和3. 谢谢!
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