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算法题1，有字符串“aaabbcdbaaabc”，用python语言将abcd进行顺位排序def sort_str(x): res = "".join(sorted(list(x))) return resSQL1，（1）用一条sql语句查询出各个班级的男生人数和平均分select c.id, avg(std.core) from student std, class c where std.c_id = c.id and std.sex ="男" group by c.i

python总结https://www.cnblogs.com/lesleysbw/p/6417369.htmlpython 进阶http://www.py3study.com/Article/details/id/16424.htmlhttps://blog.youkuaiyun.com/deepking18254382067/article/details/88030305算法http://ddrv.cn/docs/SortingAlgorithm/1.bubbleSort.html...