public void randomizeSamples() {
		for( int ns = 0; ns < numberOfSamples; ns++ )
			for( int i = 0; i < n; i++ ) {
				// Select 2 samples (1 of them is random)
				int r1 = i;
				int r2 = (int) (Math.random() * n);

				// Swap these 2 samples
				int tmp = samples[ns][r1];
				samples[ns][r1] = samples[ns][r2];
				samples[ns][r2] = tmp;
			}
	}