function number = getNumJumbles()
% getNumJumbles
%
% Returns a valid number of jumbles to solve by repeatedly asking the user
% until the user enters a valid value.  A value is not valid if:
% - it is not a scalar
% - it is not an integer
% - it is not positive
%
% If the value is not valid, a message is displayed indicating why.
%
% Output: a valid number of jumbles to attempt
%

% Replace the line below with your code.
number = 0;