get max value in a list of struct C#

Question

i have a list of struct in c#. the struct has 5 variables(int doc1,int paragraph1,int doc2,int paragraph2,float similarity). doc1 , paragraph1 represent index of paragraph in doc is related with parag2 in doc2 by this similarity value. It is possible that a paragraph in a document is associated with many other paragraphs with different similarity. i want to have parag2 and doc2 having max similarity.

Vulpes · Answer

This simple example shows how you can do something like this using LINQ: using System; using System.Collections.Generic; using System.Linq; struct MyStruct { public int doc1; public int paragraph1; public int doc2; public int paragraph2; public float similarity; public MyStruct(int doc1 int paragraph1 int doc2 int paragraph2 float similarity) { this.doc1 = doc1; this.paragraph1 = paragraph1; this.doc2 = doc2; this.paragraph2 = paragraph2; this.similarity = similarity; } } class Test { static void Main() { List list = new List (); list.Add(new MyStruct(1 1 2 1 0.5f)); list.Add(new MyStruct(1 1 2 2 0.4f)); list.Add(new MyStruct(1 1 2 3 0.6f)); list.Add(new MyStruct(1 2 2 4 0.75f)); list.Add(new MyStruct(1 2 2 5 0.44f)); list.Add(new MyStruct(1 2 2 6 0.65f)); var groupings = list.GroupBy(ms => new{ms.doc1 ms.paragraph1}); foreach(var g in groupings) { Console.WriteLine(g.Key); MyStruct maxMs = g.OrderByDescending(ms => ms.similarity).First(); Console.WriteLine(Most similar to : doc2 = {0} paragraph = {1} similarity = {2}
 maxMs.doc2 maxMs.paragraph2 maxMs.similarity); } Console.ReadKey(); } }

m hmh · Answer

it's very good. so thanks