车辆路径问题的C代码，里面有测试数据和结果分析。-Vehicle routing problem with the C code, there are test data and results analysis.

这是一个图书销售的java程序，按不同的销售模式分为五种方法，可以使销售图书时操作简单。-This is a java program book sales, according to a different sales model is divided into five kinds of method to sell your books easy to operate.