一类限位数排列的计数问题

Enumerations of a Class of Restricted Permutations

讨论了与客观实际问题密切相关的一类限位圆排列问题,利用广容斥原理,给出了求解这类排列数的一般公式,并讨论了几种特殊情况下的具体解答.

This paper deals with the methods of c ounting permutations with some restrictions making use of the generalized principle of inclusion and exclusion,and gives the form ulae correspondingly.