I don't understand the failed test message

Hello,

I was solving some cody problem called perfect squares that asks for a given vector of numbers, return true if one of the numbers is a square of one of the numbers. Otherwise return false.

Example:

input a = [2 3 4]
output b is true

my code

function b = isItSquare(a)
y = []
for i = 1:length(a)
    j = 1:length(a)
    if a(i) == a(j)^2
        y = horzcat(y,1)
    else
        y = horzcat(y,0)
    end
end
end
if any(y(:)) ==1
    b = true
else
    b = false
end
    
end

I got 7 out of 8 tests correct, the first test is incorrect

I don't even understand what does this mean?

[Torsten]

Maybe one of the challenges was not to use "else" in your code ? But you used it ...

Answer 1

[Dyuman Joshi]

Hi @Nourhan, Cody moderator here

As @Torsten mentions, that particular test case checks for some keywords, to see if they are present or not in the submitted code.

The first 2 keywords are generally used to hack through the cody system and get either low scoring solutions or solve a problem without actually solving it. The last 2 keywords are often used to submit a hard-coded solution.

Thus this particular combination of keywords are usually banned.

However, I have removed the last 2 keywords from the test suite and added some cases with random values so that it is not possible to submit a hard-coded solution.

I have rescored your solution and it is now accepted.

https://in.mathworks.com/matlabcentral/cody/problems/23/solutions/11884102

Additionally, I would suggest you to go through your code and see where you can change it to make it more efficient.

You can also think of other approaches for this problem, particularly in the direction of a vectorized solution. You can also check other submitted solutions for help/hint.

[Nourhan]

Thank you so much and I will try to improve my solution

[Dyuman Joshi]

Glad to have helped!

You can also comment on a solution or a problem on Cody if you need help, and I'll respond accordingly.