(http://leetcode.com/2010/11/convert-sorted-list-to-balanced-binary.html)Given a singly linked list where elements are sorted in ascending order, conv...
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其他好文 时间:
2015-01-18 22:18:49
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202
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.思路:题目看上去好像很难,但实际上很简单,递归做就行,每次找到左右子树对应的子链表...
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其他好文 时间:
2015-01-18 21:03:17
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241
题目:EPI
书上的代码我认为有错。我的代码如下所示,时间复杂度为O(h),h为二叉树的高度。
//该函数不允许r和s为nullptr,且要求r、m、s三个指针互不相等
bool is_r_s_descendant_and_ancestor(shared_ptr r, shared_ptr m, shared_ptr s)
{
if (m == nullptr || r == nul...
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其他好文 时间:
2015-01-18 14:27:37
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265
B - Counting BST Time Limit:3000MS Memory Limit:0KB 64bit IO Format:%lld & %lluSubmit Status Practice UVALive 5058DescriptionBinary Search Tree (BST) ...
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其他好文 时间:
2015-01-18 11:46:37
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161
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...
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其他好文 时间:
2015-01-18 09:17:43
阅读次数:
146
题目:Given an array where elements are sorted in ascending order, convert it to a height balanced
BST.
思路:给出一个排序的数组,如何构造一个平衡二叉查找树?平衡二叉查找树要求任一结点的左右子树的高度差不能超过一,也叫做高度平衡树。如果让我们从一个排序数组中选取一个元素做树的根,我们会选择哪一个...
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编程语言 时间:
2015-01-16 16:51:25
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237
Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST.
Calling next() will return the next smallest number in the BST.
Note: next()...
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其他好文 时间:
2015-01-16 16:50:57
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152
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's ke...
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编程语言 时间:
2015-01-16 10:12:49
阅读次数:
163
(http://leetcode.com/2010/11/convert-binary-search-tree-bst-to.html)Convert a BST to a sorted circular doubly-linked list in-place. Think of the left ...
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其他好文 时间:
2015-01-16 08:42:31
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156
Recover Binary Search TreeTwo elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A sol...
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其他好文 时间:
2015-01-15 23:35:43
阅读次数:
164