public static void Main()
{
var random = new Random();
var n = 100;
var benchmarkTimesInMinutes = new List <int> {
1, 2, 5, 10
};
var matrix = new ArrayMatrix(n, n, new int[n * n].ToList().Select(_ => random.Next(-9, 9)).ToList());
var startTime = DateTime.UtcNow;
var add = matrix.Add(matrix);
var elapsed = DateTime.UtcNow - startTime;
// operation count for matrix additions = n * n
Console.WriteLine("Benchmark results for addition");
foreach (int b in benchmarkTimesInMinutes)
{
var operations = n * n;
var result = Math.Sqrt(TimeSpan.FromMinutes(b).Divide(TimeSpan.FromMilliseconds(elapsed.TotalMilliseconds)) * operations);
Console.WriteLine($"{b} Min:\t n = {result}");
}
startTime = DateTime.UtcNow;
var mult = matrix.Mult(matrix);
elapsed = DateTime.UtcNow - startTime;
// operation count for matrix multiplicatoins = additions: n³ + multiplictions: n³
Console.WriteLine("Benchmark results for multiplication");
foreach (int b in benchmarkTimesInMinutes)
{
// ommitted factor 2
var operations = n * n * n;
var result = Math.Pow((TimeSpan.FromMinutes(b).Divide(TimeSpan.FromMilliseconds(elapsed.TotalMilliseconds)) * operations), 0.3333);
Console.WriteLine($"{b} Min:\t n = {result}");
}
Console.ReadLine();
}
public static void Main()
{
var random = new Random();
Console.WriteLine("Enter first Matrix [4x5]");
var matrix1 = new ArrayMatrix(4, 5);
matrix1.Input();
matrix1.Print();
Console.WriteLine("");
Console.WriteLine("Random second Matrix [4x5]");
var matrix2 = new ArrayMatrix(4, 5, new int[4 * 5].ToList().Select(_ => random.Next(-9, 9)).ToList());
matrix2.Print();
Console.WriteLine("");
Console.WriteLine("Addition of first and second Matrix [4x5]");
var add = matrix1.Add(matrix2);
add.Print();
Console.WriteLine("");
Console.WriteLine("Random third Matrix [5x2]");
var matrix3 = new ArrayMatrix(5, 2, new int[5 * 2].ToList().Select(_ => random.Next(-9, 9)).ToList());
matrix3.Print();
Console.WriteLine("");
Console.WriteLine("Multiplication of first and third Matrix");
var mult = matrix1.Mult(matrix3);
mult.Print();
Console.WriteLine("");
Console.ReadLine();
}
