Background
Some concepts in Mathematics and Computer Science are simple in one or two dimensions but become more complex when extended to arbitrary dimensions. Consider solving differential equations...
分类：
其他好文 时间：
2014-05-26 04:31:34
阅读次数：
234
题目一：
Given a binary tree containing digits from 0-9 only, each root-to-leaf
path could represent a number.
An example is the root-to-leaf path 1->2->3 which represents the number 123.
Fin...
分类：
其他好文 时间：
2014-05-26 04:06:41
阅读次数：
248
【题目】
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order.
For example,
Given the following matrix:
[
[ 1, 2, 3 ],
[ 4, 5, 6 ],
[ 7, 8, 9 ]
]
You should return [1,2,3,6,9,8,7,4,5].
【题意】
螺旋输出MxN...
分类：
其他好文 时间：
2014-05-24 23:11:02
阅读次数：
279
题目如下：
Problem D: Hartals
A social research organization has determined a simple set of parameters to simulate the behavior of the political parties of our country. One of the ...
分类：
其他好文 时间：
2014-05-24 23:10:01
阅读次数：
317
【题目】
Find the contiguous subarray within an array (containing at least one number) which has the largest sum.
For example, given the array [?2,1,?3,4,?1,2,1,?5,4],
the contiguous subarray [4,?1,2,1] has the largest sum = 6.
【题意】
给定一个数组，找出和最大的子数组，返回...
分类：
其他好文 时间：
2014-05-24 22:19:17
阅读次数：
260
【题目】
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Each element in the array represents your maximum jump length at that position.
Determine if you are able to reach the last index.
For example:...
分类：
其他好文 时间：
2014-05-24 20:44:39
阅读次数：
221
【题目】
Given an array of strings, return all groups of strings that are anagrams.
Note: All inputs will be in lower-case.
For example:
Input: ["tea","and","ate","eat","den"]
Output: ["tea","ate","eat"]
【题意】
anagrams指的是颠倒字母顺序构成的单词，以tea为例，则与它an...
分类：
其他好文 时间：
2014-05-24 18:36:01
阅读次数：
317
Palindrome Partitioning
Given a string s, partition s such that every substring of the partition is a palindrome.
Return all possible palindrome partitioning of s.
For example, given s = "...
分类：
其他好文 时间：
2014-05-24 14:29:45
阅读次数：
222
【题目】
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Given a collection of intervals, merge all overlapping intervals.
For example,
Given [1,3],[2,6],[8,10],[15,18],
return [1,6],[8,10],[15,18].
...
分类：
其他好文 时间：
2014-05-24 14:18:27
阅读次数：
193
sort 1 sort — 对数组排序
本函数对数组进行排序。当本函数结束时数组单元将被从最低到最高重新安排。 2 Example #1 sort() 例子 $val ){echo "fruits["
. $key . "]=" . $val . "\n" ;} ?>...
分类：
其他好文 时间：
2014-05-24 09:28:02
阅读次数：
216
