将列表中的每个元素与每个其他元素进行比较 [英] Comparing every element in a list against every other element

问题描述

获取列表中的每个元素并对其执行某些操作的最有效方法是什么。例如，假设您有一个包含x，y数据点的对象列表。你有一个可以计算点积的函数，但我想计算每个其他元素的点积

What is the most efficient way to take every element in a list and do some operation on it. For example say you have a list of objects that all have x,y data points. You have a function that can calculate the dot product but I want to calculate the dot product against every other element

推荐答案

嵌套循环。但是，你有什么期待奇迹？没有奇迹这样的东西。

-SA

Nested loop. But what, did you expect some miracle? There is no such thing as miracle.

—SA

string [] textlist = new string [] {a，b，c};

var intersecting = from text a in textlist

from string b in textlist

where（（a！= b）&&（a.CompareTo（b）== -1））//&& a.SomeCondition（b）

选择新{object1 = a，object2 = b}

;



intersecting.Dump（结果）;





Kishor Makwana

软件工程师

Insight Softech

www.insightsoftech.com

string[] textlist = new string[] {"a", "b", "c"};
var intersecting = from string a in textlist
from string b in textlist
where ((a != b) && (a.CompareTo(b) == -1)) // && a.SomeCondition(b)
select new { object1 = a, object2 = b }
;

intersecting.Dump("Result");


Kishor Makwana
Software Engineer
Insight Softech
www.insightsoftech.com

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