Hello, I have two questions: How do I determine if there is a direct route between x and y in this code? How do I determine the one-stop routes in this code? Thank you

Hello, I'm a novice at MatLab and I need some assitance with a few lines of code. Thank you for your help.

Notice: To clarify, I'm not asking you to work out the entire project or anything like that. I will post the prompt the teacher has given us and the example just incase y'all need that information. I will also be posting my code. Sorry if this comes off as rude, just don't want to send the wrong idea.

Problems I need assitance with:

How do I determine if there is a direct route between x and y?

How do I determine the one-stop routes?

These will be all the way at the bottom of the code, the comments label them

Prompt:

Table 2 Example from Prompt:

My code:

myproj('City.xlsx')

function myproj(fname)

miles = xlsread(fname);

A = (miles > 0);

B = A.^2;

fprintf('Cities to choose from: ');

disp(1:length(A));

x = input('Departure city: ');

y = input('Destination city: ');

fprintf('\n');

if x == y

disp('You entered the same Departure city and Destination city!\n')

else

% Display number of routes

total_routes = A(x,y) + B(x,y);

str1 = sprintf('Total numbers of routes: %d', total_routes);

disp(str1);

% Start a table on screen

xlswrite('City.xlsx',x);

xlswrite('City.xlsx',y);

disp('Stop Distance');

% Set up column headings in Excel

str2 = sprintf('Routes between City %d and City %d', x, y);

xlswrite(fname, {str2}, 2, 'A1');

xlswrite(fname, {str1}, 2, 'A2');

xlswrite(fname, {'Stop'}, 2, 'A3');

xlswrite(fname, {'Distance'}, 2, 'B3');

% Prepare vectors for writing to Excel

xlswrite(fname, A, 'A1');

routes(1:total_routes, 1) = {' '}; % Route name (Direct or City name)

distances(1:total_routes, 1) = 0; % Mile of each route

num_route = 0; % Keep track of row number in matrix “routes” and “distances”

% Determine if there is a direct route between Cities x and y

if(A(2,i) == 1)

dirroute = miles(2,i);

end

% Display on screen and also add the route to “routes” and “distances” for Excel

disp(['City',num2str(1i),' ',num2str(dep(i)),'+',num2str(des(i)),'=',num2str(routes(j,1)),' Miles'])

% Determine one-stop routes between x and y

% Display on screen and also add the route to “routes” and “distances” for Excel

% Writing results to Excel

end

end

[John D'Errico]

Note that when you post code, especially code where you made at least some degree of effort, and then ask specific questions as you did, that absolves you from a lot. :) It makes people far more willing to help you out.

[Ian Upchurch]

Thank you, also is it possible for me to edit the question? I just realized I forgot to replace those "Break.xlsx" files with "Ctiy.xlsx" file for the table that should display on the command window

[John D'Errico]

There should be a button on the top right that says edit, with a little icon that looks like a pencil.

[Ian Upchurch]

Got it, thank you