题目: 二叉搜索树中第K小的元素: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。 思路: 二叉搜索树具有良好的性质,一个节点左边的数小于该节点,右边的数大于该节点,因
6. Kth Smallest in BSTWrite a Python program to find the kth smallest element in a given binary search tree.Sample Solution: Python Code:class TreeNode(object): def __init__(self, x): self.val = x self.left = None self.right = None def kth_smallest(root, k): stac...
tags: ['python', 'algorithm', 'tree', 'DFS', 'Binary search tree'] draft: false summary: "Given an integer array nums and an integer k, return the kth largest element in the array." ---## Introduction Given an integer array `nums` and an integer `k`, return the `k-th` larges...
c++ java pythonclass Solution { public: /** * @param n: An integer * @param nums: An array * @return: the Kth largest element */ int kthLargestElement(int k, vector<int> &nums) { int n = nums.size(); // 为了方便编写代码,这里将第 k 大转换成第 k 小问题。
https://leetcode-cn.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows/ 给你一个 m * n 的矩阵 mat,以及一个整数 k ,矩阵中的每一行都以非递减的顺序排列。 你可以从每一行中选出 1 个元素形成一个数组。返回所有可能数组中的第 k 个 最小 数组和。
Design a class to find the kth largest element in a stream. Note that it is the kth largest element in the sorted order, not the kth distinct element. Your KthLargest class will have a constructor which accepts an integer k and an integer array nums, which contains initial elements from ...