it does not work if u did not put curly brackets. since otherwise u call a table. however, you need a column array to pass the test I believe.

function mpg = sort_cars(N)
load cars.mat
sorted = sortrows (cars,4)
n = N
mpg = sorted(1:n,2)
mpg=mpg{:,:}
end

load cars.mat
sorted = sortrows (cars,4)
n = N
mpg = sorted(1:n,2)
mpg=mpg{:,:}

function mpg = sort_cars(N)
load cars.mat
sorted = sortrows (cars,4);
mpg = sorted(1:N,2);
mpg{:,:}
end

Gives the correct output yet assertion failed. Why?

This is an improved version of my code but still doesn't work:

function mpg = sort_cars(N)
S = load('cars.mat');
cars = struct2table(S)
B = sortrows(cars,2)
mpg = B.MPG(1:N)

end

I don't know why my solution is not working:

function mpg = sort_cars(N)
cars = load('cars.mat')
B = sortrows(cars,2)
mpg = B.MPG(1:N)
end

I tested it on the desktop version and it works flawlessly.
Any ideas, please?

Thanks in advance!

sortrows(cars, 2) supposed to be sortrows(cars, 4), Weight is on Column 4 I think.
Better be like this: sortrows(cars, 'Weight', 'ascend');

mpg=mpg{:,:}

Add this to your code.

Comparison is equal, why assertion is failed?

The output should be an array not a table.

I do not understand why this code failed assertion test even though it yields the correct answer

function mpg = sort_cars(N)
load cars.mat
sorted = sortrows (cars,4)
n = N
mpg = sorted(1:n,2)
end

The output is expected to be a column vector, whereas your code returns a table.

I tried for the solution nearly 20 ways but didn't work. finally took help from the Matlab community and compleated it