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Leetcode--Validate Binary Search Tree
Problem Description: 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 l...
分类:其他好文   时间:2014-05-15 11:22:21    阅读次数:317
leetcode -day14 Populating Next Right Pointers in Each Node I II
1、 ?? Populating Next Right Pointers in Each Node Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; } Populate...
分类:其他好文   时间:2014-05-15 04:57:36    阅读次数:221
[LeetCode]ZigZag Conversion
Write the code that will take a string and make this conversion given a number of rows: P A H N A P L S I I G Y I R convert("PAYPALISHIRING", 3) should return "PAHNAPLSIIGYIR"....
分类:其他好文   时间:2014-05-15 04:49:04    阅读次数:311
LeetCode--Same Tree
Same Tree  Total Accepted: 16072 Total Submissions: 38790My Submissions Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal i...
分类:其他好文   时间:2014-05-15 04:00:39    阅读次数:319
LeetCode之Unique Binary Search Trees
Unique Binary Search Trees, Given n, how many structurally unique BST's (binary search trees) that store values 1...n?...
分类:其他好文   时间:2014-05-15 02:32:11    阅读次数:245
[leetcode]_Maximum Depth of Binary Tree
第三道树的题目,我还是不会,我擦,怎么递归算法还是不能很好理解。看来还得好好研究下递归算法。题目:求一棵树的最大深度。思路:递归地求取左子树最大深度 和 右子树最大深度,返回较大值即为 整棵树的 最大深度。代码:public int maxDepth(TreeNode root) { ...
分类:其他好文   时间:2014-05-14 23:07:14    阅读次数:373
Pat(Advanced Level)Practice--1043(Is It a Binary Search Tree)
Pat1043代码题目描述:A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties:The left subtree of a node contain...
分类:其他好文   时间:2014-05-14 22:03:25    阅读次数:487
Zoj 3201 Tree of Tree
Zoj 3201 Tree of Tree...
分类:其他好文   时间:2014-05-14 21:44:57    阅读次数:250
LeetCode--Binary Tree Preorder Traversal
Binary Tree Preorder Traversal  Total Accepted: 18022 Total Submissions: 51784My Submissions Given a binary tree, return the preorder traversal of its nodes' values. For example: Given b...
分类:其他好文   时间:2014-05-14 20:43:22    阅读次数:242
HDU 4786 Fibonacci Tree
点击打开链接 Fibonacci Tree Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 975    Accepted Submission(s): 289 Problem Description  ...
分类:其他好文   时间:2014-05-14 20:18:47    阅读次数:366
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