题目：You are climbing a stair case. It takes n steps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct ways can you....
分类：
编程语言 时间：
2014-08-02 12:19:43
阅读次数：
389
题目：Follow up for "Unique Paths":Now consider if some obstacles are added to the grids. How many unique paths would there be?An obstacle and empty spa....
分类：
编程语言 时间：
2014-08-02 12:19:13
阅读次数：
241
This How-To Geek School class is intended for people who want to learn more about security when using Windows operating systems. You will learn many p...
分类：
其他好文 时间：
2014-08-01 18:50:32
阅读次数：
333
Gentlemen, how many times you’ve found yourself with the right girl, wrapped in one another’s arms to create the right moment but have been lost for w...
分类：
其他好文 时间：
2014-08-01 18:31:52
阅读次数：
248
Problem Description
Many years ago , in Teddy’s hometown there was a man who was called “Bone Collector”. This man like to collect varies of bones , such as dog’s , cow’s , also he went to the grav...
分类：
其他好文 时间：
2014-08-01 16:12:41
阅读次数：
264
Big Number
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)
Total Submission(s): 25567 Accepted Submission(s): 11600
Problem Description
In many appli...
分类：
其他好文 时间：
2014-08-01 10:58:11
阅读次数：
171
题目：Given n, how many structurally unique BST's (binary search trees) that store values 1...n?For example,Given n = 3, there are a total of 5 unique B....
分类：
编程语言 时间：
2014-08-01 04:53:11
阅读次数：
272
Climbing StairsYou are climbing a stair case. It takesnsteps to reach to the top.Each time you can either climb 1 or 2 steps. In how many distinct way...
分类：
其他好文 时间：
2014-08-01 04:37:21
阅读次数：
244
Bone Collector
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 29109 Accepted Submission(s): 11898
Problem Description
Many years ag...
分类：
其他好文 时间：
2014-07-31 20:59:57
阅读次数：
205
Description
Recall the definition of the Fibonacci numbers:
f1 := 1
f2 := 2
fn := fn-1 + fn-2 (n>=3)
Given two numbers a and b, calculate how many Fibonacci numbers are in the range...
分类：
其他好文 时间：
2014-07-31 17:11:07
阅读次数：
325
