A.在實(shí)際使用隊(duì)列時(shí),為了使隊(duì)列空間能重復(fù)使用,往往對(duì)隊(duì)列的使用方法稍加改進(jìn):無論插入或刪除,一旦隊(duì)尾rear指針增1或隊(duì)頭front指針增1時(shí)超出了所分配的隊(duì)列空間,就讓它指向這片連續(xù)空間的起始位置。
B.在循環(huán)隊(duì)列中,當(dāng)隊(duì)列為空時(shí),隊(duì)頭指針front=隊(duì)尾指針rear
C.當(dāng)所有隊(duì)列空間全占滿時(shí),對(duì)頭指針front=隊(duì)尾指針rear
D.當(dāng)循環(huán)隊(duì)列中只剩下一個(gè)空存儲(chǔ)單元時(shí),隊(duì)列沒有滿