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【LeetCode 230】Kth Smallest Element in a BST
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:2015-07-02 22:30:24    阅读次数:263
LeetCode 230: Kth Smallest Element in a BST
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...
分类:其他好文   时间:2015-07-02 15:50:38    阅读次数:178
Kth Smallest Element in a BST
https://leetcode.com/problems/kth-smallest-element-in-a-bst/Given a binary search tree, write a functionkthSmallestto find thekth smallest element in ...
分类:其他好文   时间:2015-07-02 11:58:59    阅读次数:190
LeetCode "Kth Smallest Element in a BST"
Simply to utilize BST's property. The two-pass code below can be extended to support frequent insert\delete.struct SNode{ SNode(int rcnt) : cnt(rcn...
分类:其他好文   时间:2015-07-02 11:38:44    阅读次数:108
Solution 9: 判断序列是否为BST的后续遍历结果
问题描述输入一个整数序列,判断该序列是否为一颗BST的后序遍历序列。解决思路递归:(1)序列的最后一个元素为根节点元素;(2)在序列中找出前一段代表根节点的左子树孩子们,而剩下的一段为右子树孩子们,检查这些节点的值是否都是大于(等于根节点元素)。(3)然后递归的对两部分进行判断。程序public c...
分类:其他好文   时间:2015-07-02 11:35:44    阅读次数:96
#leetcode#Kth Smallest Element in a BST
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...
分类:其他好文   时间:2015-07-02 10:09:45    阅读次数:110
Leetcode 230 Kth Smallest Element in a BST
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:2015-07-02 09:53:05    阅读次数:128
LeetCode——Binary Search Tree Iterator
Description:Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.Calling next() will r...
分类:其他好文   时间:2015-06-29 00:24:08    阅读次数:191
Java 中的引用和指针
在一些编程场景中,我们常常需要记录下某一个特殊的实例位置(如BST转双向链表题中需要记录最终生成的链表的头节点)。在使用Java编程过程中,需要注意引用的问题。class ListNode { public int val; public ListNode next; public ListNode...
分类:编程语言   时间:2015-06-28 18:48:25    阅读次数:126
Solution 1: BST转双向链表
问题描述将一棵二叉查找树(BST)转为有序的双向链表。例如,有一颗BST如下:2| \1 3转成双向链表为:1=2=3解决思路1. 保持有序:中序遍历;2. 双向链表:记录链表的头节点,遍历过程中记录前一个节点并且保持双向连接关系。程序class TreeNode { public int val....
分类:其他好文   时间:2015-06-28 18:46:17    阅读次数:142
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