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题解 | 牛牛学数列5

n = int(input()) a, b = 1, 1 if n == 1 or n == 2: print(1) else: for _ in range(3, n + 1): a, b = b, a + b print(b)

2025-06-13

1 22

题解 | 统计加班员工占比

select s.department, concat( round( sum(if(a.attend_date > 9.5,1,0)) / count(1) * 100 ,1) ,'%') ratiof...

2025-06-12

0 23

题解 | 分组计算练习题

select gender, university, count(device_id) user_num, round(avg(active_days_within_30),1) avg_active_day, round(avg(question_cnt),1) avg_question_...

2025-06-08

0 13