Method nbest

Finds the indices of the n-best entries in a codebook @param in @param offset @param codebook @param len @param entries @param E @param N @param nbest @param best_dist

(final float[] in,
                                 final int offset,
                                 final float[] codebook,
                                 final int len,
                                 final int entries,
                                 final float[] E,
                                 final int N,
                                 final int[] nbest,
                                 final float[] best_dist)