A.MINHOURDAYMONTHYEARCOMMAND
B.MINHOURDAYMONTHDAYOFWEEKCOMMAND
C.COMMANDHOURDAYMONTHDAYOFWEEK
D.COMMAN
第5题
第7题
A.x=top.getData();top=top.getNext();
B.top=top.getNext();x=top.getData();
C.x=top.getNext();top=top.getData();
D.top.setNext(top);x=top.getData();
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