Pseudorandom character matrix generation

Generate a 10x10 matrix with the letters 'b', 'd', 'p', 'q' in randomized order. Every refresh should produce a new randomized matrix.

This is to simulate the bdpq test. Should be a pretty simple task, but seems to be otherwise!

Answer 1

[Rik]

If you want a 10x10 char array, you can also use indexing:

source = 'bdpq';
Array = source(randi(end,[10 10]))

Array = 10×10 char array
    'ppbbbbpbqd'
    'pbpqpqdddb'
    'pbqdddqbpb'
    'dqppppqqbb'
    'qbbbdbpqpd'
    'qpbbqpqbbq'
    'qqqpqdpqdp'
    'pbqbppqqbp'
    'dqdddpddqq'
    'pdddpqdqpd'

[Abhraneil]

Hi @Rik, I am trying to use this code for an app in matlab app deisgner. I tried to use a Table, Text Area, and Edit Field (Text), Edit Field (Numeric) to show the output in the app's UI, but everytime I receive the error " Conversoin to matlab.ui.control.<display type> from char is not possible. Any idea to resolve this conversion issue?

Thanks!

[Abhraneil]

Hi @Rik, I used Table in the app UI, and I added "array2table" to Array, and it produced a clean output. So it seems to be working.

If you have any better suggestions, please let me know! Thank you!

[Rik]

I can't say I understand what you want to do, so I don't have any suggestions. Your steps don't seem very complicated, so I don't expect to have a much better solution.

Answer 2

[KSSV]

 s = {'b', 'd', 'p', 'q' } ; 
 S = cell(10) ;
 for i = 1:10
     for j = 1:10
         t = s(randperm(4,4)) ;
         S{i,j} = [t{:}] ;
     end
 end
 S

S = 10×10 cell array
    {'dbpq'}    {'qbdp'}    {'pdbq'}    {'qpbd'}    {'qbdp'}    {'pqdb'}    {'qbdp'}    {'qpdb'}    {'bqpd'}    {'pbqd'}
    {'bqdp'}    {'dpbq'}    {'bpdq'}    {'pbqd'}    {'bdqp'}    {'dbqp'}    {'qpdb'}    {'dpbq'}    {'pbdq'}    {'pbqd'}
    {'bpdq'}    {'dpqb'}    {'pqbd'}    {'bqdp'}    {'pqbd'}    {'qdpb'}    {'bqpd'}    {'bdpq'}    {'dbpq'}    {'bpdq'}
    {'pdqb'}    {'bpdq'}    {'qdpb'}    {'dpbq'}    {'bqdp'}    {'dqbp'}    {'pbdq'}    {'pdbq'}    {'qpdb'}    {'bqdp'}
    {'dbpq'}    {'bpdq'}    {'bpqd'}    {'dqpb'}    {'pdqb'}    {'qdbp'}    {'dqbp'}    {'bpqd'}    {'dpbq'}    {'dbpq'}
    {'dqpb'}    {'bdpq'}    {'qpbd'}    {'pbdq'}    {'dqbp'}    {'pqbd'}    {'qpdb'}    {'bdqp'}    {'pdbq'}    {'dbqp'}
    {'qdbp'}    {'qdbp'}    {'bpqd'}    {'bpqd'}    {'bqdp'}    {'bpqd'}    {'dbqp'}    {'dqbp'}    {'bpqd'}    {'bpqd'}
    {'dpbq'}    {'dpbq'}    {'dbqp'}    {'dqpb'}    {'bdpq'}    {'qbdp'}    {'bdpq'}    {'pdqb'}    {'qpdb'}    {'bdpq'}
    {'qbdp'}    {'dbqp'}    {'pqbd'}    {'qpdb'}    {'bdqp'}    {'bpdq'}    {'pbdq'}    {'pqbd'}    {'dbqp'}    {'pdqb'}
    {'pqdb'}    {'dbqp'}    {'bpdq'}    {'dqpb'}    {'dpbq'}    {'qbpd'}    {'bpdq'}    {'pbdq'}    {'qpdb'}    {'pdqb'}