()算法A的功能是逆置广义表p(即广义表由p指针所指)逆置后的广义表由t指向
()逆置后的广义表由t指向这时p=nil
(ab)
(d)
否广义表的长度不是广义表中原子个数而是指广义表中所含元素的个数广义表中的元素可以是原子也可以是子表广义表元素多于个时元素间用逗号分开
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