public void TestGetRandom()
{
var numbers = new int[] { 1, 2, 3, 4, 5 };
var probs = new double[] { 1, 2, 0, 2, 1 };
var k = Enumerable.Range(0, 100).Select(s => Expendator.GetRandomNumberFromArrayWithProbabilities(numbers, probs)).ToArray();
var k1 = k.Count(p => p == numbers[0]);
var k2 = k.Count(p => p == numbers[1]);
var k3 = k.Count(p => p == numbers[2]);
var k4 = k.Count(p => p == numbers[3]);
var k5 = k.Count(p => p == numbers[4]);
$"".Show();
}