Selecting a random digit from a vector except for one digit that should not show except when at least 5 of the other digits were shown

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Dana Cherri
Dana Cherri 2019-7-19
评论： Walter Roberson 2019-7-20
Using AppDesginer, I want to show one digit at a time on the screen (a I created a vector from 0 to 9) and let's say I want the last number to only show when at least other 5 digits from the vector were shown before it. Can you please help me?

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Walter Roberson
Walter Roberson 2019-7-19
min_before = 5;
lb = 0; ub = 9;
candidates = lb:ub;
special = randi([lb ub]);
not_special = setdiff(candidates, special);
order1 = randperm(length(not_special), min_before);
first_group = not_special(order1);
remainder = [special, setdiff(not_special, first_group)];
order2 = randperm(length(remainder));
second_group = remainder(order2);
order = [order1 order2];
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Dana Cherri
Dana Cherri 2019-7-20
It is showing "Invalid default value for property 'candidates' in class 'app1':
Undefined function or variable 'lb' " although I referred to the class name.
This is the code:
classdef app1 < matlab.apps.AppBase
properties (Access = private)
Property % Description
min_before = 5;
lb = 0;
ub = 9;
candidates = lb:ub;
special = 3;
not_special = setdiff(candidates, special);
order1 = randperm(length(not_special), min_before);
first_group = not_special(order1);
remainder = [special, setdiff(not_special, first_group)];
order2 = randperm(length(remainder));
second_group = remainder(order2);
order = [order1 order2];
font = [48 72 94 100 120];
height = 12:29;
end
% Callbacks that handle component events
methods (Access = private)
% Button pushed function: ReadyButton
function ReadyButtonPushed(app, event)
app.ReadyButton.Visible = 'off';
app.HelloLabel.Text = 'Hello';
app.HelloLabel.FontColor = [1 1 1];
pause(1);
for ii = 1:160
tstart = tic;
app.HelloLabel.Text = app.order(ii);
pause(0.25);
app.HelloLabel.Text = 'X';
pause(0.9);
app.HelloLabel.Text = app.order(ii);
telapsed = toc(tstart);
end
end

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