--查询课程编号以'c05'开头,被3名及以上学生选修--且期末成绩的平均分高于75分的课程号、选修人数--和期末成绩平均分,并按平均分降序排序use teachinggoselect courseno,count(studentno)as '选修人数',avg(final) as '期末平均分'from scorewhere courseno like 'c05%' and fi
题目描述 题目难度:Medium Given an array with n objects colored red, white or blue, sort them in-place so that objects of the same color are adjacent, with the colors in the order red, white and blue. Here,
/* 作用域链 内部作用域->外部作用域-> 全局作用域 */ // 全局作用域 var variable1 = “Comrades”; var variable2 = “Sayonara”; function outer(){ // 外部作用域 var variable1 = “World”; function inner(){ // 内部作用域 var variable2