JS :

• no sample tests

JS :

• no random tests
• no sample tests

Duplicate of https://www.codewars.com/kata/setzeroes

Is it permitted using published problems (like this, from CTCI book) for kata?

Also, would need random tests if it weren't a duplicate.

And I don't know what's the mean of this statement: where each pixel is 4 bytes.
It seems of no use. like Can you do this in place? ;-)

Anagram is duplicate too:

https://www.codewars.com/kata/anagram-detection
https://www.codewars.com/kata/anagram-or-not

This is a duplicate of https://www.codewars.com/kata/palindromes-2

Run-length encoding is a duplicate to many katas:

https://www.codewars.com/kata/compress-slash-encode-a-message-with-rle-run-length-encoding
https://www.codewars.com/kata/data-compression-using-run-length-encoding
https://www.codewars.com/kata/run-length-encoding

• 1

dup: i.e. this

• 2

Needs some random tests

• 3

Your initial code (s) => should be (s1, s2) =>

• 1
  Test.assertDeepEquals(rotateMatrix([1]), [1], "Incorrect");
[1] is NOT a 2D array(matrix), it should be [[1]].

• 2

Can you do this in place?

Your tests is NOT testing for do this in place, it should test like this:

var arr=[[1,2],[3,4]]
rotateMatrix(arr)
Test.assertDeepEquals(arr, [[3,1], [4,2]], "Incorrect");`

• 3

It's a duplicate: https://www.codewars.com/kata/rotate-an-array-matrix

A high quality Kata should include:

• Sample Tests -- to help users knowing what's the input and the expected output. Also, you should write these to the description.

• Basic Tests -- to help users debug their code. It can contains some edge case.

• Random Tests -- It makes your tests to have better coverage and prevent some incomplete solutions passed your tests.