I am not sure this method can be called a cipher since there is probably no way to recover the original number. You should probably call it a hash.
yeah, that's right. Thanks, I changed it to hash and changed some test cases too.
Clearly, need a new test case to eliminate solutions that define isequal() to always return true.
Swap the first and last columns
Back to basics 12 - Input Arguments
Back to basics 14 - Keywords
How to subtract?
Whether the input is vector?
Cipher or decipher the number according to the second input - 10 keys
Rotate matrix by coloumns
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