将以下文字内容翻译成英文：设计蚁群算法求解混合车队车辆配置和路径规划问题。通过小规模数据分析将Gurobi求解的精确结果与蚁群算法的结果进行对比发现设计的蚁群算法可以在短时间内得到近似最优解验证了蚁群算法的有效性。

Design ant colony algorithm to solve the problem of vehicle configuration and path planning for mixed fleet. Through the analysis of small-scale data, the result of Gurobi's exact solution is compared with the result of ant colony algorithm, and it is found that the designed ant colony algorithm can obtain approximate optimal solution in a short time, which verifies the effectiveness of ant colony algorithm.