PalindromesA regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string"ABCDEDCBA"is a palindr...
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其他好文 时间:
2014-07-01 18:52:11
阅读次数:
460
题目链接:uva 10623 - Thinking Backward
题目大意:就是给出N,表示要将平面分解成N份,问有哪些可选则的方案,m表示椭圆、n表示圆形、p表示三角形的个数,m、n、p分别给定范围。
解题思路:本来这题一点思路都没有,但是在论坛上看到一个公式N=2+2m(m?1)+n(n?1)+4mn+3p(p?1)+6mp+6np
这样只要枚举m和p,求解n,判断n...
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其他好文 时间:
2014-06-30 08:56:14
阅读次数:
186
copy------强化效率无所不用其极
copy(first,last,result)算法可将输入区间[first,last)内的元素复制到输出区间[result,result+(last-first))内。也就是说,它会执行赋值操作*result
=*first,*(result+1) =*(first+1),
…一次类推。返回一个迭代器:result+(last-...
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其他好文 时间:
2014-06-22 22:00:36
阅读次数:
196
copy,copy_backward和copy_if是几种常用的泛型算法,这三个函数包含在头文件#include中,下面县给出三种函数的原型,再说明三者的区别。...
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其他好文 时间:
2014-06-18 08:00:35
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635
DescriptionStandard web browsers contain
features to move backward and forward among the pages recently visited. One way
to implement these features i...
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Web程序 时间:
2014-05-31 21:16:40
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279
A regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string "ABCDEDCBA" is a palindrome because it is the same when the string is read from lef...
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其他好文 时间:
2014-05-02 10:33:09
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332
1D people lived in a 1D country. Everything in the country was one-dimensional, and everything was simple and clear: just one axis and two directions — forward and backward. Even a 1D world has proble...
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其他好文 时间:
2014-04-29 13:44:22
阅读次数:
284