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 tota...
分类:
其他好文 时间:
2015-08-05 19:57:54
阅读次数:
123
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.
思路:此题与排序数组很大的不同是链表不知道长度以及上面的值。其整体思路还是中间值作为根节点,但是需要一点策略,不然就会超时。
先整体遍历长度之后,将长度保存,这样就不需要每...
分类:
编程语言 时间:
2015-08-05 15:00:53
阅读次数:
146
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.
思路:将排序数组转换为高度平衡的二叉搜索树。思想是将中间的值作为根节点,然后左右的数组分别为左右子树。递归求解。
代码如下:
/**
* Definition for a binary tre...
分类:
编程语言 时间:
2015-08-05 14:59:13
阅读次数:
173
// 95 return all unique BST roots.public ArrayList generateTrees(int n) { // 2nd ans // Start typing your Java solution below //...
分类:
其他好文 时间:
2015-08-05 08:52:16
阅读次数:
87
if(BST_CHECKED==IsDlgButtonChecked(IDC_CHECK_UNDER))//TODO:Addyourcontrolnotificationhandlercodehereswitch(this->IsDlgButtonChecked(IDC_CHECK1)){caseB...
分类:
其他好文 时间:
2015-08-04 10:55:52
阅读次数:
121
The Kth smallest element in a BST
分类:
其他好文 时间:
2015-08-04 09:25:26
阅读次数:
113
题目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.Follow up:
What if the BST is m...
分类:
其他好文 时间:
2015-08-03 14:50:03
阅读次数:
112
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Callingnext()will return the next...
分类:
其他好文 时间:
2015-08-03 13:01:20
阅读次数:
116
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
分类:
其他好文 时间:
2015-08-03 10:06:50
阅读次数:
119
Given n, how many structurally unique BST's (binary search trees) that store values 1...n?
For example,
Given n = 3, there are a total of 5 unique BST's.
1 3 3 2 1
...
分类:
其他好文 时间:
2015-08-02 20:08:53
阅读次数:
125