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若以S和X分别表示进栈和退栈操作,则对初始状态为空的栈可以进行的栈操作系列是( )

单选题
2021-09-02 00:26
A、SXSSXXXX
B、SXXSXSSX
C、SXSXXSSX
D、SSSXXSXX
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正确答案
D

试题解析

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