Csharp/C Sharp/LINQ/Aggregate

Aggregate and Sum

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; public class MainClass {

   public static void Main() {
       IEnumerable<int> intSequence = Enumerable.Range(1, 10);
       foreach (int item in intSequence)
           Console.WriteLine(item);
       int sum = intSequence.Aggregate(0, (s, i) => s + i);
       Console.WriteLine(sum);
   }

}

</source>

Aggregate Prototype

<source lang="csharp"> using System; using System.Linq; using System.Collections; using System.Collections.Generic; public class MainClass {

   public static void Main() {
       int N = 5;
       IEnumerable<int> intSequence = Enumerable.Range(1, N);
       foreach (int item in intSequence)
           Console.WriteLine(item);
       int agg = intSequence.Aggregate((av, e) => av * e);
       Console.WriteLine("{0}! = {1}", N, agg);
   }

}

</source>

Use Aggregate on an array

<source lang="csharp">

using System; using System.Collections; using System.Collections.Generic; using System.Text; using System.Linq; public class MainClass {

   public static void Main() {
       int[] numbers = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
       var query = numbers.Aggregate((a, b) => a * b);
   }

}

</source>

Use Aggregate on an array with tenary operator

<source lang="csharp"> using System; using System.Collections; using System.Collections.Generic; using System.Text; using System.Linq; public class MainClass{

  public static void Main(){
      int[] numbers = { 9, 3, 5, 4, 2, 6, 7, 1, 8 };
      var query = numbers.Aggregate(5, (a,b) => ( (a < b) ? (a * b) : a));
   }

}

</source>