Should not be approved in current state:

• Solution method should be top level, not inside an object
• Printing inputs on success is pointless (especially when they're so long theres a legitimate chance of overflowing the buffer), just use assertion messages.
• No good reason to restrict the user to returning only List, any other immutable Seq is equally valid as the task is not about working with linked lists.

You are right,I guess it was my own mistake.

Seems fine to me. Try saving your code and use the 'reset' button which should reset the tests.

Tests are messed up.

Traceback (most recent call last):
File "/workspace/default/.venv/lib/python3.11/site-packages/codewars_test/test_framework.py", line 112, in wrapper
func()
File "/workspace/default/tests.py", line 11, in test_case
2: (s, "fat"),
^
NameError: name 's' is not defined

Maybe 6 kyu. It took me some time to solve it.

That which you mention is not a Java bug.

Comparisons between primitive types do not produce the errors you mentioned, and the "equals" method

of Integer class compares whether they are the same object by comparing if are of the same class and their values.

Integer equals:

public boolean equals(Object obj) {
    if (obj instanceof Integer) {
        return value == ((Integer)obj).intValue();
    }
    return false;
}

I've solved that problem. There was a precision issue in test case.

This might be a bug on java. Some times, when using equal on the numeric objects, instead comparing the value, they compare the instances memory addresses.

Java

Why sometimes (.2% de 100 of running test) fails?
I have compensated for an error of 1E-10.

sumHeight: 39.399476090834455 sumWidth: 39.399476090834455: perfect

org.opentest4j.AssertionFailedError:
Expected :fat
Actual :perfect

It's fixed now, if you encountered an issue, reopen this

Python

For what language this issue addressed? If Python, i can fix this.

A solution: don't generate (near) perfect matrices.

For example:

num_tests = 0
while num_tests < 100:
    matrix = random_matrix()
    width, height = ...
    if isclose(width, height):
        continue # drop this matrix
    num_tests += 1
    ... # do test

we have infinite decimal places

???

approved by

Thanks for the advice, hope it is clearer now.