/// <summary>
/// Creates an array that contains a random permutation of the
/// numbers in the interval [0, count-1].
/// </summary>
public static long[] CreatePermutationArrayLong(
this IRandomUniform rnd, long count)
{
var p = new long[count].SetByIndexLong(i => i);
rnd.Randomize(p);
return(p);
}
/// <summary>
/// Creates an array that contains a random permutation of the
/// ints in the interval [0, count-1].
/// </summary>
public static int[] CreatePermutationArray(
this IRandomUniform rnd, int count)
{
var p = new int[count].SetByIndex(i => i);
rnd.Randomize(p);
return(p);
}
/// <summary>
/// Randomly permute the elements of the supplied array. This does
/// work with arrays up to a length of about 2^50.
/// </summary>
public static void Randomize <T>(
this IRandomUniform rnd, T[] array)
{
rnd.Randomize(array, array.LongLength);
}