设计一系统，实现医药公司定期对销售各药品的记录进行统计，可按药品的编号、单价、销售量或销售额做出排名。在本设计中，首先从数据文件中读出各药品的信息记录，存储在顺序表中。各药品的信息包括：药品编号、药名、药品单价、销出数量、销售额。药品编号共4位，采用字母和数字混合编号，如：A125，前一位为大写字母，后三位为数字，按药品编号进行排序时，可采用基数排序法。对各药品的单价、销售量或销售额进行排序时，可采用多种排序方法，如直接插入排序、冒泡排序、快速排序，直接选择排序等方法。在本设计中，对单价的排序采用冒泡排序法，对销售量的排序采用快速排序法，对销售额的排序采用堆排序法-Design a system to achieve sales of all pharmaceutical companies regularly statistical records of drugs, according to the number of drugs, price, sales volume or revenue to make rankings. In this design, the first read from the data file records of each drug information stored in the sequence table. The drug information, including: pharmaceuticals number, drug name, drug price, the number of sales, sales. Number of four drugs, the use of letters and numbers mixed numbers, such as: A125, before an uppercase letter, the latter three as a number, numbers are sorted by drugs, we can use radix sort. For each drug price, sales volume or revenue sort, we can use a variety of sorting methods, such as direct insertion sort, bubble sort, quick sort, sorting methods such as direct selection. In this design, the sort used for price bubble sort method, the sales order using quick sort, the sort used for sales heap sort method