Orthogonal Array

This program generates an Orthogonal Array of strength 2

Generate an Orthogonal Array using simple permutation method. The algorithm was provided in the paper Leung et. al.
Calling A=OA_PERMUT(Q,N,J)

Q = the number of levels
N = the number of factors or columns
J is selected such that number of rows is equal to Q^J and
N = (Q^J - 1)/(Q-1)

Tested on oa_permut(3,4,2) given in paper
Tested on Taguchi L64 array oa_permut(2,63,6)

Reference: Leung, Y.-W.; Yuping Wang,"An orthogonal genetic algorithm with quantization for global numerical optimization," Evolutionary Computation, IEEE Transactions on , vol.5, no.1, pp.41,53, Feb 2001, doi: 10.1109/4235.910464