單項(xiàng)選擇題從一個(gè)循環(huán)順序隊(duì)列刪除元素時(shí),首先需要()

A.前移一位隊(duì)首指針
B.后移一位隊(duì)首指針
C.取出隊(duì)首指針?biāo)肝恢蒙系脑?br /> D.取出隊(duì)尾指針?biāo)肝恢蒙系脑?/p>


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