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 ...
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 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 ...
【leetcode】230. Kth Smallest Element in a BST 题目如下: 解题思路:本题对运行时间的要求比较低,我试过把遍历所有节点并且把节点的值存入数组,最后排序并取第K-1位的元素作为结果返回也能通过。我的方法是省去了最后排序的步骤,因为BST的规律就是 node.left.val < node.val < node.right.val,所以只要按...
Kth Largest Element in an Array 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 example, Given [3,2,1,5,6,4] and k = 2, return 5. Note: You may assume k is always valid, 1 ≤...
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...
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 ...
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 ...
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...
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...
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: ...