public static void Shuffle(this NDArrayRandom rand, NDArray_Legacy <NDArray_Legacy <double> > list)
{
var rng = new Random();
var count = list.Length;
while (count > 1)
{
count--;
var k = rng.Next(count + 1);
var value = list[k];
list[k] = list[count];
list[count] = value;
}
}
public static void Shuffle(this NDArrayRandom rand, NDArrayGeneric <double> list)
{
var rng = new Random();
var count = list.Shape.Shapes[0];
while (count > 1)
{
count--;
var k = rng.Next(count + 1);
var value = list[k];
list[k] = list[count];
list[count] = value;
}
}
public static NDArray <int> randint(this NDArrayRandom rand, int low, int?high = null, Shape size = null)
{
var rng = new Random();
var data = new int[size.Size];
for (int i = 0; i < data.Length; i++)
{
data[i] = rng.Next(low, high.HasValue ? high.Value : int.MaxValue);
}
var np = new NDArray <int>();
np.Shape = new Shape(size.Shapes);
np.Data = data;
return(np);
}
public static NDArray <int> Permutation(this NDArrayRandom rand, int max)
{
var random = new Random();
int[] orders = new int[max];
var np = new NDArray <int>().ARange(max);
for (int i = 0; i < max; i++)
{
var pos = random.Next(0, max);
var zero = np.Data[0];
np.Data[0] = np.Data[pos];
np.Data[pos] = zero;
}
return(np);
}
public static NDArrayRandom Random <TData>(this NDArray <TData> np)
{
var rand = new NDArrayRandom();
return(rand);
}
