Implement a function to check if a binary tree is a binary search tree./* The inorder travel of a BST is strictly increasing. We track the pre node of...
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其他好文 时间:
2014-07-13 22:27:09
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344
Given a binary tree, return the postorder traversal of its nodes' values.
For example:
Given binary tree {1,#,2,3},
1
2
/
3
return [3,2,1].
Note: Recursive solut...
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其他好文 时间:
2014-07-13 17:18:19
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193
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.
For example:
Given the below binary tree and sum
...
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其他好文 时间:
2014-07-13 13:58:01
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184
Design an algorithm and write code to find the first common ancestory of two nodes in a binary tree. Avoid storing additional nodes in data structure....
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其他好文 时间:
2014-07-13 13:24:21
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279
poj2255 Tree Recovery(求后续遍历,二叉树)...
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其他好文 时间:
2014-07-13 00:08:35
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200
MST
Time Limit: 2000/1000MS (Java/Others) Memory Limit: 128000/64000KB (Java/Others)
SubmitStatus
Problem Description
Given a connected, undirected graph, a spanning tree of that graph is...
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其他好文 时间:
2014-07-12 22:32:40
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200
一条标准的拓扑题解。
我这里的做法就是:
保存单亲节点作为邻接表的邻接点,这样就很方便可以查找到那些点是没有单亲的节点,那么就可以输出该节点了。
具体实现的方法有很多种的,比如记录每个节点的入度,输出一个节点之后,把这个节点对于其他节点的入度去掉,然后继续查找入度为零的点输出。这个是一般的做法了,效果和我的程序一样的。
有兴趣的也可以参考下我这种做法。
#...
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其他好文 时间:
2014-07-12 22:15:05
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308
二叉排序树:
二叉排序树(Binary Sort Tree)又称二叉查找树(Binary Search Tree),亦称二叉搜索树。 它或者是一棵空树;或者是具有下列性质的二叉树:
(1)若左子树不空,则左子树上所有结点的值均小于它的根结点的值;
(2)若右子树不空,则右子树上所有结点的值均大于它的根结点的值; (3)左、右子树也分别为二叉排序树;
注:中序遍历一棵二叉排序...
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其他好文 时间:
2014-07-12 19:35:08
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249
Description
Read the statement of problem G for the definitions concerning trees. In the following we define the basic terminology of heaps. A heap is a tree whose internal nodes have each assigned...
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其他好文 时间:
2014-07-12 18:52:12
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285
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 key.Th...
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其他好文 时间:
2014-07-12 17:26:31
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256