计算所有可能的对项目从两份名单? [英] Calculate all possible pairs of items from two lists?

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问题描述

我有两个数组:

 的String []组= {A,空,B,空, C,空}; 

的String [] =组合{C#,Java的,空,C ++,空};



我想返回所有可能的组合,如:

  {{A,C#},{A,Java的},{A,C ++},{B,C# },............} 

空应该被忽略


解决方案

  Group.Where(X =>!x = NULL)
.SelectMany(G => combination.Where(C =>!C = NULL)
。选择(C =>新建{集团= G,组合= C}));



或者



 在G组,其中从C在G组合!= NULL 
,其中c!= NULL
选择新{组= G,组合= C}


I have two arrays:

string[] Group = { "A", null, "B", null, "C", null };

string[] combination = { "C#", "Java", null, "C++", null }; 

I wish to return all possible combinations like:

{ {"A","C#"} , {"A","Java"} , {"A","C++"},{"B","C#"},............ }

The null should be ignored.

解决方案

Group.Where(x => x != null)
     .SelectMany(g => combination.Where(c => c != null)
                                 .Select(c => new {Group = g, Combination = c}));

Alternatively:

from g in Group where g != null
from c in combination where c != null
select new { Group = g, Combination = c }

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