我们先看Hashtable。MSDN的解释:表示键/值对的集合,这些键/值对根据键的哈希代码进行组织。Hash算法是把任意长度的输入(又叫做预映射, pre-image),通过散列算法,变换成固定长度的输出,该输出就是散列值。这种转换是一种压缩映射,也就是,散列值的空间通常远小于输入的空间,不 同的...
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其他好文 时间:
2014-07-16 19:14:46
阅读次数:
239
Lists can appear as values in a dictionary. For example, if you were given a dictionary that maps from letters to frequencies, you might want to inver...
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其他好文 时间:
2014-07-16 18:36:23
阅读次数:
221
假设有如下一个Dictionary 要转换成List Dictionary dicNumber = new Dictionary(); List listNumber = new List(); dicNumber.Add("a", "First"); dicNumber.Add("b", "Sec...
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其他好文 时间:
2014-07-16 17:03:54
阅读次数:
146
If you use a dictionary in a for statement, it traverses the keys of the dictionary. For example, print_hist prints each key and the corresponding val...
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其他好文 时间:
2014-07-15 23:43:56
阅读次数:
527
A dictionary is like a list, but more general. In a list, the indices have to be integers; in a dictionary they can be (almost) any type. You can thin...
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其他好文 时间:
2014-07-14 23:26:50
阅读次数:
329
一些Swift的问题列表:How to use a Objective-C #define from SwiftHow do I convert an NSDictionary to a Swift Dictionary?Swift: 'var' declaration without getter...
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其他好文 时间:
2014-07-14 23:20:20
阅读次数:
205
Suppose you are given a string and you want to count how many times each letters appears. There are several ways you do it:You could create 26 variabl...
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其他好文 时间:
2014-07-14 21:55:02
阅读次数:
247
HtmlAgilityPack中的HtmlNode类与XmlNode类差不多,提供的功能也大同小异。下面来看看该类提供功能。一、静态属性public static Dictionary //ElementsFlags;获取集合的定义为特定的元素节点的特定行为的标志。表包含小写标记名称作为键和作为值的...
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Web程序 时间:
2014-07-13 11:10:20
阅读次数:
142
The Cow Lexicon
Time Limit: 2000MS
Memory Limit: 65536K
Total Submissions: 7909
Accepted: 3711
Description
Few know that the cows have their own dictionary with W (...
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其他好文 时间:
2014-07-12 21:25:28
阅读次数:
250
问题:
Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that:
Only one letter can be changed at a time
Each intermediate wo...
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编程语言 时间:
2014-07-12 19:21:38
阅读次数:
290