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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:2015-07-23 13:47:56    阅读次数:90
BZOJ 1112: [POI2008]砖块Klo1112( BST )
枚举每个长度为k的区间, 然后用平衡树找中位数进行判断, 时间复杂度O(nlogn).早上起来精神状态不太好...连平衡树都不太会写了...果断去看了会儿番然后就A了哈哈哈----------------------------------------------------------------...
分类:其他好文   时间:2015-07-23 13:30:08    阅读次数:119
leetCode(46):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.         直观地一想,查找第k小的数,不就是...
分类:其他好文   时间:2015-07-22 16:22:04    阅读次数:87
[leedcode 108] Convert Sorted Array to Binary Search Tree
Given an array where elements are sorted in ascending order, convert it to a height balanced BST./** * Definition for a binary tree node. * public cla...
分类:其他好文   时间:2015-07-21 23:53:37    阅读次数:176
[leedcode 109] Convert Sorted List to Binary Search Tree
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST./** * Definition for singly-linked list. ...
分类:其他好文   时间:2015-07-21 23:47:06    阅读次数:145
[LeetCode][Java] Validate Binary Search Tree
题目: Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as follows: The left subtree of a node contains only nodes with keys less than the node...
分类:编程语言   时间:2015-07-20 23:48:33    阅读次数:209
[LeetCode][Java] Recover Binary Search Tree
题目: Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its structure. Note: A solution using O(n) space is pretty straight forward. Could ...
分类:编程语言   时间:2015-07-20 23:47:29    阅读次数:169
[LeetCode][Java]Unique Binary Search Trees II
题目: Given n, generate all structurally unique BST's (binary search trees) that store values 1...n. For example, Given n = 3, your program should return all 5 unique BST's shown below. ...
分类:编程语言   时间:2015-07-20 14:36:18    阅读次数:128
二叉查找树的C++实现
二叉查找树(Binary Search Tree,BST),(又:二叉搜索树,二叉排序树)它或者是一棵空树,或者是具有下列性质的二叉树: 若它的左子树不空,则左子树上所有结点的值均小于它的根结点的值; 若它的右子树不空,则右子树上所有结点的值均大于它的根结点的值; 它的左、右子树也分别为二叉排序树。...
分类:编程语言   时间:2015-07-19 19:27:00    阅读次数:154
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 BST is modifi...
分类:其他好文   时间:2015-07-19 16:32:18    阅读次数:137
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