clc

disp('Pick any number at random from the first row of the following');
disp('matrix.  Whatever number you choose, count to the right that ');
disp('many spaces.  If you get to the end of a row, continue counting ');
disp('from the first column in the next row.  Keep doing this until ');
disp('you get to a number that makes you count beyond the end of the ');
disp('last row.  Remember this last number and see if the computer''s ');
fprintf('psychic powers can figure out which number it is.\n\n');

a = randint(10,10,[1 9]);
aVector = a';
aVector = aVector(:) ;

i = 1;

disp(a);
while true
  
  if (i + aVector(i) > length(aVector))
    fprintf('\n\nI read your mind while you were working.\n\n');     
    fprintf('Press any key for the answer.');
    pause;
    fprintf('\nAnswer: %d\n\n',aVector(i));
    break;
  else
    i = i + aVector(i);
  end
end