title:
Largest palindrome product
Problem 4
A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91
99.
Find the l...
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其他好文 时间:
2014-06-07 01:24:27
阅读次数:
398
【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 climb to the top?
【题意】
有个梯子有n阶,每次只能爬1阶或者2阶,为爬到梯子顶共有多少种爬法
【思路】
依次确定跳到每一阶上的爬法数目
这其实是一...
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其他好文 时间:
2014-06-05 07:16:08
阅读次数:
203
有点意思的题目。用动态规划可以O(n)求解出来:a[i]代表子字符串string(0,i)的可能解码方式,a[i] = {a[i-1] or a[i-1]+a[i-2]}.
意思是如果string(i)不为0,至少a[i] == a[i-1],即一种解码方法是string{0,.....(i-1)}+string(i);
然后如果string{i-1,i}是合法的(注意合法概念,比如...
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其他好文 时间:
2014-06-05 03:36:48
阅读次数:
231
??
Description
The country is facing a terrible civil war----cities in the country are divided into two parts supporting different leaders. As a merchant, Mr. M does not pay attention to politic...
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其他好文 时间:
2014-06-05 00:16:43
阅读次数:
266
一条消息由A-Z的字母组成,将该消息按照上面的对应关系进行编码。给定一条已经经过编码的数字消息,求有多少种方式来对它进行解码。...
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其他好文 时间:
2014-06-04 23:41:15
阅读次数:
442
You 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 ways can you climb...
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其他好文 时间:
2014-06-04 19:53:34
阅读次数:
173
如果你的计算机加入了某个AD域,则可以获取该域中所有的计算机和用户的信息。所用程序集,需要.Net Framework
4。添加程序集引用System.DirectoryServices.AccountManagement获取AD域名称,未加入AD域的,只能获取计算机名称。如果未加入任何域,则后续的...
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其他好文 时间:
2014-05-31 19:29:01
阅读次数:
313
For screening materials for different sizes,
vibrating screen is playing its role. After separating, the aggragates that can
meet your requirements wi...
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其他好文 时间:
2014-05-31 15:20:11
阅读次数:
205
DescriptionLet us consider sets of positive
integers less than or equal ton. Note that all elements of a set are different.
Also note that the order o...
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其他好文 时间:
2014-05-31 05:12:49
阅读次数:
246
Problem StatementIn the Republic of Nlogonia
there are N cities. For convenience, the cities are numbered 0 through N-1. For
each two different cities...
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其他好文 时间:
2014-05-31 00:47:40
阅读次数:
364