Given a binary search tree, write a functionkthSmallestto find thekth 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 need to find the kth smallest frequen...
Difficulty: Medium Related Topics: Binary Search, Tree Link: https://leetcode.com/problems/kth-smallest-element-in-a-bst/ Description Given a binary s
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,...
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...
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 you need to find the kth smallest frequ...
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: ...
总体上,我们只需要增加两个变量num和res。num记录中序遍历已经输出的元素个数,当num == k的时候,我们只需要将当前元素保存到res中,然后返回即可。 下边分享下三种遍历方式的解法,供参考。 递归法。 intnum=0;intres;publicintkthSmallest(TreeNoderoot,intk){inorderTraversal(root,k);returnres;}privatevoidin...
Given a binary search tree, write a functionkthSmallestto find thekth smallest element in it. **Note: ** You may assume k is always valid, 1 ≤ k ≤ BST's total elements. Example 1: 代码语言:javascript 代码运行次数:0 Input:root=[3,1,4,null,2],k=13/\14\2Output:1 ...
2.2 Implement an algorithm to find the kth to last element of a singly linked list. 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...