Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: image.png k = 8, return 13. Note: You may assu...
classSolution {public:intkthSmallest(TreeNode* root,intk) {returnkthSmallestDFS(root, k); }intkthSmallestDFS(TreeNode* root,int&k) {if(!root)return-1;intval = kthSmallestDFS(root->left, k);if(k ==0)returnval;if(--k ==0)returnroot->val;returnkthSmallestDFS(root->right, k); } ...
反之说明 mid>= L,可以设置high = mid。 1defkthSmallest(self, matrix, k):2"""3:type matrix: List[List[int]]4:type k: int5:rtype: int6"""7n =len(matrix)8low, high = matrix[0][0], matrix[-1][-1]9whilelow <high:10mid = (low + high)>>111temp =self.search_lower_than_...
https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/ 题目: n x n Note that it is the kth smallest element in the sorted order, not the kth distinct element. Example: matrix = [ [ 1, 5, 9], [10, 11, 13], [12, 13, 15] ], k = 8, return 13. Note: You...
题目地址:https://leetcode.com/problems/kth-smallest-element-in-a-bst/#/description 题目描述 Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. Note: You may assume k is always valid, 1 ≤ k ≤ BST’s total ...
*/publicclassSolution{publicintkthSmallest(TreeNoderoot,intk){if(root==null){return-1;}TreeNodecurr=root;while(curr!=null){intleft=count(curr.left);if(left<k-1){k=k-left-1;curr=curr.right;}elseif(left>k-1){curr=curr.left;}else{returncurr.val;}}return-1;}privateintcount(TreeNode...
Leetcode 230. Kth Smallest Element in a BST 简介:先来看下二叉搜索树的性质,对于任意一个非叶子节点,它的左子树中所有的值必定小于这个节点的val,右子树中所有的值必定大于或等于当前节点的val。 这条性质就保证了如果我们对二叉搜索树做中序遍历,中序遍历的结果肯定是有序的。对于此题而言,我们只需要拿到...
LeetCode - The World's Leading Online Programming Learning Platformleetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/description/ Given an n x n matrix where each of the rows and columns is sorted in ascending order, return the kth smallest element in the matrix. Note that it...
Given a n x n matrix where each of the rows and columns are sorted inascending order, find the kth smallest element in the matrix. Note that it is ...
378 Kth Smallest Element in a Sorted Matrix 有序矩阵中第K小的元素 Description: Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is the kth smallest element in the sorted order, not the kt...