【题目】
Given a binary tree, determine if it is height-balanced.
For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never differ by more than 1.
【题意】
判断二叉树是否是平衡二叉树
【思路】
平衡二...
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其他好文 时间：
2014-06-20 11:02:54
阅读次数：
173
题目
Given a binary tree, determine if it is height-balanced.
For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node...
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其他好文 时间：
2014-06-20 09:02:56
阅读次数：
232
1.1Implement an algorithm to determine if a
string has all unique characters. What if you cannot use additional data
structures?字符串问题，需要先确定是不是只有ASCII码...
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其他好文 时间：
2014-06-11 12:27:53
阅读次数：
247
题目：
Determine whether an integer is a palindrome. Do this without extra space.
解题思路：
判断一个int型整数是不是回文数字，这个题也不难，依次取得数字最高位和最低位进行比较，就可以判断是不是回文数字。需要注意的是负数不是回文数字。
代码实现：...
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其他好文 时间：
2014-06-08 15:35:48
阅读次数：
375
Problem Description
Given a list of phone numbers, determine if it is consistent in the sense that no number is the prefix of another. Let’s say the phone catalogue listed these numbers:
1. Emergenc...
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其他好文 时间：
2014-06-08 10:31:22
阅读次数：
234
PathsumDescription: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 equa...
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其他好文 时间：
2014-06-08 01:11:46
阅读次数：
395
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.Fo...
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其他好文 时间：
2014-06-07 16:55:09
阅读次数：
173
题目
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 t...
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其他好文 时间：
2014-06-07 15:31:32
阅读次数：
179
题目
Given a string s and a dictionary of words dict, determine if s can be segmented into a space-separated sequence of one or more dictionary words.
For example, given
s = "leetcode",
dict =...
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其他好文 时间：
2014-06-07 13:53:28
阅读次数：
247
Determine if a Sudoku is valid, according to: Sudoku Puzzles - The Rules.
The Sudoku board could be partially filled, where empty cells are filled with the character '.'.
A partially fille...
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其他好文 时间：
2014-06-07 12:51:12
阅读次数：
225
