using System;

​

// To execute C#, please define "static void Main" on a class

// named Solution.

//Inputs: A = [5, 3, 7, 2, 3] // Positifs

//Width = 3

// Result[0] = (5 + 3 + 7) / 3 = 5

// Result[1] = (3 + 7 + 2) / 3 = 4

// Result[2] = (7 + 2 + 3) / 3 = 4

// Result[3] = (2 + 3) / 2 = 2.5

// Result = [5, 4, 4, 2.5, 3]

public class Program

{

    public static void Main(string[] args)

    {

        var numbers = new int[]{5, 3, 7, 2, 3};

        var averages = numbers.GetMovingAverage(3);

        foreach (var average in averages)

        {

            Console.WriteLine(average);

        }

    }

}

​

public static class AverageExtensions

{

    public static double[] GetMovingAverage(this int[] numbers, int width)

    {

        var averages = new double[numbers.Length];

        for (var i = 0; i < numbers.Length; i++)

        {

            double sum = 0;

            int totalNumbers = 0;

            for (int j = 0; j < width; j++)

            {

                var newPosition = i + j;

                if (newPosition < numbers.Length)

                {

                    sum += numbers[newPosition];

                    totalNumbers++;

                }

            }

​

            averages[i] = sum / totalNumbers;

        }

​

        return averages;

    }

}