给出一个由非0整数组成的序列a1,a2,…,an, 设计递归算法求其中由同号整数组成的最长连续段(称为最长同号连续段)的长度。-Given a non-0 component of the sequence of integers a1, a2, ..., an, the design of recursive algorithm for one by the same integer number consisting of the longest continuous segment (kn