这又是一道关于二叉搜索树Binary Search Tree 的题, LeetCode 中关于 BST 的题有Validate Binary Search Tree,Recover Binary Search Tree,Binary Search Tree Iterator,Unique Binary Search Trees,Unique Binary Search Trees II,Convert S
LeetCode 230. Kth Smallest Element in a BST 1classSolution {2public:3intrank;4intresult;56voidhelp(TreeNode* root,intk){7if(!root)return;89help(root->left, k);10if(++rank ==k){11result = root->val;12return;13}14help(root->right, k);15}16intkthSmallest(TreeNode* root,intk) ...
【Leetcode】Kth Smallest Element in a BST 题目链接:https://leetcode.com/problems/kth-smallest-element-in-a-bst/ 题目: kthSmallestto find the kth smallest element in it. Note: You may assume k is always valid, 1 ≤ k ≤ BST's total elements. Follow up: What if the BST is modified...
日期 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...
根据给的matrix的性质,可以知道最小的element一定是在左上角的,接下来小的值是在这个值的右边还是在这个值的下面没有办法确定,这里维护的是一个size为k的minHeap,通过传统的BFS做法,不停地把当前值的下面的和左边的传入minHeap,因为minHeap会自动的把最小值放到最上面,所以poll k次就可以知道第k小的。这里用到...
Given ann x nmatrixwhere each of the rows and columns is sorted in ascending order, returnthekthsmallest element inthe matrix. Note that it is thekthsmallest elementin the sorted order, not thekthdistinctelement. You must find a solution with complexity better thanO(n2). ...
/* 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:...
k-th smallest element 问题？k-th smallest element in the union of two sorted array ,求logn的...
kth smallest element in a sorted matrix/heap Aug 2, 2018 1 """ 2 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.3 4 Note that it is the kth smallest element in the sorted order, not the kth ...
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: ...