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题解 | #顺时针旋转矩阵#

class Solution { public: vector<vector<int> > rotateMatrix(vector<vector<int> > mat, int n) { // write code here ...

C++

2021-09-28

0 397

题解 | #括号生成#

class Solution { public: /** * * @param n int整型 * @return string字符串vector */ void backtrack(vector<string>& re...

C++

2021-09-27

0 418

题解 | #判断二叉树是否对称#

/** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { public: /** * ...

C++

2021-09-27

0 491

题解 | #二叉树的最大路径和 #

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

C++

2021-09-26

0 416

题解 | #矩阵元素查找#

class Solution { public: int find(vector<int> a, int x) { int l = 0, r = a.size() - 1; while(l < r) { int mid...

C++

2021-09-25

0 341

题解 | #反转数字#

class Solution { public: /** * * @param x int整型 * @return int整型 */ int reverse(int x) { // write code here ...

C++

2021-09-24

0 345

题解 | #反转数字#

class Solution { public: /** * * @param x int整型 * @return int整型 */ int reverse(int x) { // write code here ...

C++

2021-09-24

1 434

题解 | #将字符串转化为整数#

class Solution { public: int atoi(const char *str) { // 1. 处理空字符串 // 2. 忽略前置空格 // 3. 保存符号 // 4. 处理非法输入 // ...

C++

2021-09-24

0 468

题解 | #删除有序链表中重复的元素-II#

/** * struct ListNode { * int val; * struct ListNode *next; * }; */ class Solution { public: /** * * @param head ListNode类 ...

C++

2021-09-23

0 325

题解 | #判断一棵二叉树是否为搜索二叉树和完全二叉树#

/** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { public: /** * ...

C++

2021-09-23

0 323