LeetCode215-kth-largest-element-in-an-array 第k 大的元素 这题用递归出错了,划不来,一点都不好debug, 最重要的是抽线能力 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 ...
也可以使用递归的方式: classSolution {public:intkthSmallest(TreeNode* root,intk) {returnSmallest(root,k); }intSmallest(TreeNode* root,int&k){if(root ==NULL)return-1;intnum = Smallest(root->left,k);if(k ==0)returnnum;if(--k ==0)returnroot->val;returnSmallest(root->right,k); } ...
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 (insert/delete operations) often and you n...
Given a binary search tree, write a function kthSmallest to find the kth smallest element in it. 求一个二叉搜索树的第k小值。 题目链接:https://leetcode.com/problems/kth-smallest-element-in-a-bst/ 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,...
Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element. For e...
Note: You may assume k is always valid, 1 ≤ k ≤ BST’s total elements. 方法思路 求一组数中的第K个最小...LeetCode—84. Largest Rectangle in Histogram LeetCode—84. Largest Rectangle in Histogram 题目 https://leetcode.com/problems/largest-rectangle-in-histogram/description/ 找出直方图...
题目地址:Kth Smallest Element in a BST 题目简介: 给定一个二叉搜索树,编写一个函数 kthSmallest 来查找其中第 k 个最小的元素。 说明:你可以假设 k 总是有效的,1 ≤ k ≤ 二叉搜索树元素个数。 示例 1: 示例 2: &n...猜你喜欢LeetCode——230. 二叉搜索树中第K小的元素(Kth Smallest Element in...
Leetcode Kth Smallest Element in a BST Given a binary search tree, write a functionkthSmallestto 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 (insert/delete operations) often and...
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: ...
这道题让我们求链表中倒数第k个元素,LeetCode中相类似的题目有Kth Largest Element in an Array 数组中第k大的数字和Kth Smallest Element in a BST 二叉搜索树中的第K小的元素。但那两道题和这题又不一样,首先这道题是要在链表中操作,链表的特点就是不能通过下标来直接访问元素,而且要知道链表长度的话只...