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C# / .NET - calculate average of array
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In this article, we would like to show you how to calculate average of array in C#.
Quick solution:
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int[] numbers = { 1, 2, 3, 4 };2
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double average = numbers.Average();4
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Console.WriteLine(average); // Output: 2.5or:
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int[] numbers = { 1, 2, 3, 4 };2
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int sum = 0;4
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if (numbers.Any())6
foreach (int number in numbers)7
sum += number;8
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double average = (double)sum / numbers.Length;10
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Console.WriteLine(average); // Output: 2.5
In this example, we use Average() method from System.Linq to caluclate average of the array.
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using System;2
using System.Linq;3
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public class Program5
{6
public static void Main()7
{8
int[] numbers = { 1, 2, 3, 4 };9
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double average = numbers.Average();11
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Console.WriteLine(average); // Output: 2.513
}14
}Output:
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2.5In this example, we use foreach to sum all numbers in the List, then we divide the sum by the number of elements.
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using System;2
using System.Linq;3
4
public class Program5
{6
public static void Main()7
{8
int[] numbers = { 1, 2, 3, 4 };9
10
Console.WriteLine(average(numbers)); // Output: 2.511
}12
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private static double average(int[] array)14
{15
int sum = 0;16
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if (array.Any())18
foreach (int number in array)19
sum += number;20
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return (double)sum / array.Length;22
}23
}Output:
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2.5