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题解 | C++10行最优解

要理解的话把图画出来，写出递推方程。 public: int solve(int n, int k) { if(n <= 1 || k == 1) return n;; int a = log2(n) + 1, ret = 0; if(k...

C++

2022-03-30

2 316

C++利用vector

直接用vector里的函数就好 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 * * * @param array int整型vector * @r...

C++

2022-03-03

5 474

C++螺旋矩阵普遍写法

class Solution { public: vector<int> printMatrix(vector<vector<int> > matrix) { int m = matrix.size(), n = matrix[0].siz...

C++

2022-03-02

0 313

C++神奇的位运算

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 * * * @param array int整型vector * @return int整型vecto...

C++

2022-03-02

1 356

C++deque的用法

class Solution { public: vector<int> maxInWindows(const vector<int>& num, unsigned int size) { vector<int> v; ...

C++

2022-02-27

2 380

题解 | #翻转单词序列#(C++stringstream输入流)

class Solution { public: string ReverseSentence(string str) { stack<string> s; stringstream in(str); string a; ...

C++

2022-02-27

1 404

C++二叉搜索树转化双向链表

/* struct TreeNode { int val; struct TreeNode *left; struct TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(NULL) { } };*/ class ...

C++

2022-02-26

4 788

C++简单的递归+回溯

/* struct TreeNode { int val; struct TreeNode *left; struct TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(NULL) { } };*/ class ...

C++

2022-02-25

2 680

C++递归6行代码

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

C++

2022-02-25

15 535