摘要:
1、查询“c001”课程比“c002”课程成绩高的所有学生的学号;--方法一:select m.* from (select * from sc a where a.cno='c001') m,--分组课程(select * from sc b where b.cno='c002') nwhere 阅读全文
摘要:
dir0=[[0,1],[1,0],[0,-1],[-1,0]] step = 999999999 tempStep = 0 tempValue = 0 def grid_input(N): grid = [[]for i in range(N)] for i in range(N): line = 阅读全文