Problem 44952. Find MPG of Lightest Cars

Never worked with Tables before. Does Cody offer any ways to debug?

Answer: I am able to print intermediate results.

I am getting the answer but the order of elements in my vector doesn't match the required answer. How can I get it in the required order?

I do not see why this does not work. It seems to work in the Workspace alright:
function mpg = sort_cars(N)
cars = load('cars.mat')
carsSorted = sortrows(cars,'Weight')
mpg = carsSorted.MPG(1:N)
end

@Hugo, check syntax for load in the documentation https://www.mathworks.com/help/matlab/ref/load.html

Specifically, check what to expect when assigning output from load to a variable.

ty @Pooja :)

I have been working at this for a bit and it seems like it should work, What am I missing?
function mpg = sort_cars(N)
load('cars.mat')
A = sortrows(cars,'Weight')
mpg=A(1:N,2)
end

Good example of tables

Forgot to load the cars the first time

When I try to load the cars.mat file using
load cars
or
load cars.mat
or
load("cars.mat")
I get the error
Error using load
Unable to read file 'cars.mat'. No such file or directory.
I would appreciate help in resolving this error!

Worst test cases, if you want us to load 2 different tables then why are you loading them again in the test suite, then you didn't even pass enough arguments to the function in the test case. Thus, even when the solution have the right logic, it fails because of the poor test cases

I did,
load cars.mat
cars=sortrows(cars,4)
mpg=cars(1:N,2)

though the output in test 2 seems correct. I get incorrect assertion. Requesting Help.

The problem does not work as intended, as loading the .mat file does not work and the table is not passed to the function.
Nonetheless, the problem is solvable—one simply needs to copy some of the test-case commands into the solution function and indicate which data set is being loaded based on the input N.

The "load cars.mat" has unknown directory ang gives the below error:
"Error using load
Unable to read file 'cars.mat'. No such file or directory."

while copying the few first lines from "Test 1", it passes. however that should not be the correct way as "Test 2" has different set.

anyone knows how to load the mat file on online Matlab cody?

function mpg = sort_cars(N)
wgt=[cars.Weight]' ;
mpg1=[cars.MPG]';
mpg2=zeros(1,length(wgt));
for i=1:length(wgt)
[wgt1 inx]=max(wgt);
mpg2(end-i+1)=mpg1(inx);
wgt(inx)=0;
end
mpg = mpg2(1:N);
end

The above code is my solution, but it is not compiling can anyone help me with this..

This problem needs correction.
It uses two different "cars" sets for testing the answer. These two sets have different values for MPG.
Please, correct me if I'm wrong

I am having the same issue as 'FB' below. However, I used the code given under Test1 to load the cars.mat. The code is below.

My code passes the 1st test but not the 2nd test. Can someone please assist me.

function MPG = sort_cars(N)
load(fullfile(matlabroot, 'toolbox/stats/statsdemos', 'carbig.mat'));
Model = strtrim(string(Model));
cars = table(Model, MPG, Horsepower, Weight, Acceleration);
save cars.mat cars

sorted = sortrows(cars,4);
MPG = sorted(1:N,2)
MPG = MPG{:,:}
end

N=25

my code:
function mpg = sort_cars(N)
load cars.mat cars
X= sortrows(cars,4);
mpg=X(1:N,2);
end

I have tried the two tests correctly, but failed to submit…Can anyone help me…

Good Problem