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(共9篇)
*字符串*不同的子序列(动态规划)
题目详情 class Solution { public: /** * * @param S string字符串 * @param T string字符串 * @return int整型 */ int numDistinct(...
2021-03-02
0
376
*链表*删除链表的倒数第n个节点(双指针)
题目详情 /** * struct ListNode { * int val; * struct ListNode *next; * }; */ class Solution { public: /** * * @param head List...
2021-03-02
0
314
*二叉树*恢复二叉树(中序遍历应用)
题目详情 /** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : v...
2021-02-17
0
382
*二叉树*填充每个节点指向最右节点的next指针
题目详情 该题需要使用常数级别的空间,所以无法使用vector、queue等辅助空间 /** * Definition for binary tree with next pointer. * struct TreeLinkNode { * int val; * TreeLinkNod...
2021-02-14
0
383
*二叉树*用循环法和递归判断二叉树相等
题目详情 二叉树结构: /** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ 递归: class Solution { public:...
2021-02-12
0
390
*二叉树*非迭代中序遍历
题目详情 /** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { public: /** ...
2021-02-12
0
349
*链表*重排链表(快慢指针,翻转链表)
题目链接 /** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NUL...
2021-02-10
0
375
*链表*每k个一组翻转
题目链接 /** * struct ListNode { * int val; * struct ListNode *next; * }; */ class Solution { public: /** * * @param head List...
2021-02-08
0
321
*链表*判断是否有环
/** * Definition for singly-linked list. * struct ListNode { * int val; * ListNode *next; * ListNode(int x) : val(x), next(NULL) {}...
2021-02-05
0
409