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全部文章（共32篇）

题解 | #删除链表的节点#

/** * struct ListNode { * int val; * struct ListNode *next; * ListNode(int x) : val(x), next(nullptr) {} * }; */ class Solution { public: /*...

2023-01-22

0 223

位运算 | #二进制中1的个数#

class Solution { public: int NumberOf1(int n) { int res = 0; for (int i=0; i<32; i++){ if ((n & (1<<i)) !...

2023-01-04

0 239

动态规划 | #剪绳子#

class Solution { public: int cutRope(int number) { if (number <= 3) return number-1; vector<int> dp(number+1, 0); ...

2023-01-02

0 232

题解 | #机器人的运动范围#

class Solution { public: int res = 0; int cal(int n){ int sum = 0; while(n){ sum += (n%10); n/=10; ...

2023-01-02

0 291

回溯 | #矩阵中的路径#

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 matrix char字符型vector<vector<>> ...

2023-01-02

0 265

双指针二分查找 | #旋转数组的最小数字#

class Solution { public: int minNumberInRotateArray(vector<int> rotateArray) { int n = rotateArray.size(); int l = 0, r = ...

2023-01-01

0 223

题解 | #用两个栈实现队列#

class Solution { public: void push(int node) { while (!stack2.empty()){ stack1.push(stack2.top()); stack2.pop(); ...

2023-01-01

0 245

题解 | #二叉树的下一个结点#

/* struct TreeLinkNode { int val; struct TreeLinkNode *left; struct TreeLinkNode *right; struct TreeLinkNode *next; TreeLinkNode(i...

2023-01-01

0 268

题解 | #重建二叉树#

/** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x),...

2022-12-31

0 233

题解 | #从尾到头打印链表#

/** * struct ListNode { * int val; * struct ListNode *next; * ListNode(int x) : * val(x), next(NULL) { * } *...

2022-12-30

0 210