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题解 | #判断是不是平衡二叉树#

class Solution { public: bool IsBalanced_Solution(TreeNode* pRoot) { &n...

C++

2022-04-23

1 268

题解 | #统计有未完成状态的试卷的未完成数和未完成率#

select exam_id, sum(if(submit_time is null,1,0)) incomplete_cnt, round(sum(if(submit_time is null,1,0)) / count(start_time),3) incomplete_rate from ex...

Mysql

2022-04-22

1 340

题解 | #实现二叉树先序，中序和后序遍历#

/** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; ...

C++

2022-04-19

1 355

题解 | #比较版本号#

class Solution { public: /** * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可 &...

C++

2022-04-08

1 397

题解 | #【模板】栈#

#include<stdio.h> int main() { int n; scanf("%d",&n); cha...

C++

2022-03-17

14 1895

枚举

#include <stdio.h> int main(){ int a,b,c; for(a=1;a<6;a++) &...

2021-03-31

1 584

点的距离

#include <stdio.h> #include <math.h> typedef struct{ float a; float&nb...

2021-03-30

1 492

求多项式

#include <stdio.h> #include <math.h> int main(){ int n,q,k,i,sum; whil...

2021-03-30

1 584

math.h的运用

#include <stdio.h> #include <math.h> #define PI 3.1415926 int main(){ int n,a,b; &nb...

2021-03-30

2 676

简单暴力求日期天数

#include <stdio.h> int main(){ int n,y,m,d,ans,i; while(scanf("%d",&n)!=EOF){...

2021-03-30

2 600