经过下列运算后,队头的元素是()。InitQueue(qu); Enqueue(qu, ‘a’); EnQueue(qu, ‘b’); EnQueue(qu, ‘c’); DeQueue(qu);
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经过下列运算后,队头的元素是()。InitQueue(qu); Enqueue(qu, ‘a’); EnQueue(qu, ‘b’); EnQueue(qu, ‘c’); DeQueue(qu);
A.a
B.b
C.1
D.0
参考答案: