sunjun940

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全部文章（共44篇）

题解 | 找x

#include <stdio.h> int main() { int n,t=0; scanf("%d",&n); int c[n]; for(int i=0;i<n;i++) { scanf("%d...

2026-03-18

0 30

题解 | 互换最大最小数

#include <stdio.h> int main() { int a, b,m=0,n,t=0; scanf("%d", &n); int c[n]; for(int i=0;i<n;i++) { s...

2026-03-18

0 33

题解 | 百鸡问题

#include <stdio.h> int main() { int b ,n,x,y,z; scanf("%d", &n) ; b=n; for(x=0;x<=100;x++){ for...

2026-03-18

0 26

题解 | 完数

#include <stdio.h> int wang(int n){ int sum=1; for(int i=2;i<=sqrt(n);i++){ if(n%i==0)sum=sum+(i+n/i);} return sum; } int main() { ...

2026-03-18

0 34

题解 | 众数

#include <stdio.h> int main() { int a, b; int c[10]={0}; int d[20]; for(int i=0;i<20;i++){ scanf("%d",&...

2026-03-18

0 27

题解 | 众数

#include <stdio.h> int main() { int a, b; int c[10]={0}; int d[20]; for(int i=0;i<20;i++){ scanf("%d",&...

2026-03-18

0 32

题解 | 计算男生人数以及平均GPA

select count(gender) as male_num,avg(gpa) as avg_gpa from user_profile where gender='male'; count 统计数量

2026-03-18

0 34

题解 | 查看学校名称中含北京的用户

select device_id, age,university from user_profile where university like "%北京%"; 用 university like "%北京%"哈哈

2026-03-18

0 39

题解 | 用where过滤空值练习

select device_id,gender,age,university from user_profile where age is not null; where x x is not null

2026-03-18

0 33

题解 | 查找年龄大于24岁的用户信息

select device_id,gender,age,university from user_profile having age>24; where和having都可以

2026-03-18

0 30