Aggregate with seed

In this chapter you will learn:

How to use seeded aggregations

Seeded aggregations

You can omit the seed value when calling Aggregate. The first element becomes the implicit seed, and aggregation proceeds from the second element.

using System;//from   jav  a2  s  .c om
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        int[] numbers = { 1, 2, 3 };
        int x = numbers.Aggregate(0, (prod, n) => prod * n);  // 0*1*2*3 = 0
        int y = numbers.Aggregate((prod, n) => prod * n); //  1*2*3 = 6

        Console.WriteLine(x);

        Console.WriteLine(y);
    }
}

The output:

sum with seed

using System;//j av a2 s .com
using System.Collections;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static void Main()
    {
        int[] numbers = { 2, 3, 4 };
        int sum = numbers.Aggregate(0, (total, n) => total + n);  // 9
        Console.WriteLine(sum);

    }
}

The output:

Next chapter...

What you will learn in the next chapter: