/// <summary>
/// Returns a deep copy of the receiver.
/// </summary>
/// <returns></returns>
public override Object Clone()
{
RandomSampler copy = (RandomSampler)base.Clone();
copy.my_RandomGenerator = (RandomEngine)this.my_RandomGenerator.Clone();
return(copy);
}
/// <summary>
/// Constructs a random sampler that samples <tt>n</tt> random elements from an input sequence of <tt>N</tt> elements.
/// </summary>
/// <param name="n">the total number of elements to choose (must be >= 0).</param>
/// <param name="N">number of elements to choose from (must be >= n).</param>
/// <param name="randomGenerator">a random number generator. Set this parameter to <tt>null</tt> to use the default random number generator.</param>
public RandomSamplingAssistant(long n, long N, RandomEngine randomGenerator)
{
this.n = n;
this.sampler = new RandomSampler(n, N, 0, randomGenerator);
this.buffer = new long[(int)System.Math.Min(n, MAX_BUFFER_SIZE)];
if (n > 0)
{
this.buffer[0] = -1; // start with the right offset
}
FetchNextBlock();
}