// output of ./demo/comb/mixedradix-modular-gray-demo.cc:
// Description:
//% Modular mixed radix Gray code, CAT algorithm.

arg 1: 3 == n  [Number of digits]  default=3
arg 2: 4 == rr  [Base (radix) of digits (0==>falling factorial, 1==>rising factorial)]  default=4
args 3,4,... : [Optionally supply radix for all digits (rr ignored)]
Nines: [ 3 3 3 ]
    0:      [ . . . ]     3
    1:      [ 1 . . ]     0
    2:      [ 2 . . ]     0
    3:      [ 3 . . ]     0
    4:      [ 3 1 . ]     1
    5:      [ . 1 . ]     0
    6:      [ 1 1 . ]     0
    7:      [ 2 1 . ]     0
    8:      [ 2 2 . ]     1
    9:      [ 3 2 . ]     0
   10:      [ . 2 . ]     0
   11:      [ 1 2 . ]     0
   12:      [ 1 3 . ]     1
   13:      [ 2 3 . ]     0
   14:      [ 3 3 . ]     0
   15:      [ . 3 . ]     0
   16:      [ . 3 1 ]     2
   17:      [ 1 3 1 ]     0
   18:      [ 2 3 1 ]     0
   19:      [ 3 3 1 ]     0
   20:      [ 3 . 1 ]     1
   21:      [ . . 1 ]     0
   22:      [ 1 . 1 ]     0
   23:      [ 2 . 1 ]     0
   24:      [ 2 1 1 ]     1
   25:      [ 3 1 1 ]     0
   26:      [ . 1 1 ]     0
   27:      [ 1 1 1 ]     0
   28:      [ 1 2 1 ]     1
   29:      [ 2 2 1 ]     0
   30:      [ 3 2 1 ]     0
   31:      [ . 2 1 ]     0
   32:      [ . 2 2 ]     2
   33:      [ 1 2 2 ]     0
   34:      [ 2 2 2 ]     0
   35:      [ 3 2 2 ]     0
   36:      [ 3 3 2 ]     1
   37:      [ . 3 2 ]     0
   38:      [ 1 3 2 ]     0
   39:      [ 2 3 2 ]     0
   40:      [ 2 . 2 ]     1
   41:      [ 3 . 2 ]     0
   42:      [ . . 2 ]     0
   43:      [ 1 . 2 ]     0
   44:      [ 1 1 2 ]     1
   45:      [ 2 1 2 ]     0
   46:      [ 3 1 2 ]     0
   47:      [ . 1 2 ]     0
   48:      [ . 1 3 ]     2
   49:      [ 1 1 3 ]     0
   50:      [ 2 1 3 ]     0
   51:      [ 3 1 3 ]     0
   52:      [ 3 2 3 ]     1
   53:      [ . 2 3 ]     0
   54:      [ 1 2 3 ]     0
   55:      [ 2 2 3 ]     0
   56:      [ 2 3 3 ]     1
   57:      [ 3 3 3 ]     0
   58:      [ . 3 3 ]     0
   59:      [ 1 3 3 ]     0
   60:      [ 1 . 3 ]     1
   61:      [ 2 . 3 ]     0
   62:      [ 3 . 3 ]     0
   63:      [ . . 3 ]     0
 ct=64
