【题目】
You are given an n x n 2D matrix representing an image.
Rotate the image by 90 degrees (clockwise).
Follow up:
Could you do this in-place?
【题意】
给定一个nXn的二维矩阵，按时钟方向旋转90度，不能使用额外的数据结构
【思路】
从外向内逐层旋转...
分类：
其他好文 时间：
2014-05-26 05:50:25
阅读次数：
266
假定每个单词用空格隔开。
例子：
输入：how are you！
输出：3
两种方法：
一：
#include
#include
#define SIZE 20
int main()
{
char str[SIZE]={'\0'};
int count=0;
printf("please input the string\n");
gets(str);
put...
分类：
编程语言 时间：
2014-05-26 03:44:36
阅读次数：
284
Several ports(8080,8009)required by Tomcat v6.0 Server at localhost are already in use.The server may already be running in another process, or a system process may be using the port, To start this server you will need to stop the other process or change t...
分类：
编程语言 时间：
2014-05-26 03:41:22
阅读次数：
364
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have
exact...
分类：
其他好文 时间：
2014-05-25 00:46:51
阅读次数：
229
【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
It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.
Now you are suggested to solve the f...
分类：
其他好文 时间：
2014-05-24 21:52:34
阅读次数：
320
问题 L: Prime Factors
时间限制: 1 Sec 内存限制: 128 MB
提交: 36 解决: 28
[提交][状态][论坛]
题目描述
I'll give you a number , please tell me how many different prime factors in this number.
输入
There is multiple te...
分类：
其他好文 时间：
2014-05-24 20:52:54
阅读次数：
311
【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
Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume
that each input would have exact...
分类：
其他好文 时间：
2014-05-24 20:43:37
阅读次数：
341
【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
