Golang.

Tests and basic cases pass, yet in random cases some characters are represneted in the form of \xNN while Golang converts such characters to strings as \uNNNN or outputs them as they are.

1. There's no note on how to output such characters.
2. I did a lot of trials and there's no way to simply output such characters as \xNN.

Examples:

Expected
"\x14\x17!"&-[[n\u0082ª³ÛÝáì\r\x13\x13\x1d\x1en\u008b\u008e\u008f\u0095\u0096\u009c\u009c£¾ÁÈ\x11;G_a\u0092£ãò\x0e55QQYu\u007f\u0087\u0088\u0089\u0098ÍØê\x03;PPmmz²¼ÆÉÖåéö\x15$:cgx\u007f\u0081\u0087\u0097\u009d\u00a0"
to equal
"\x14\x17!"&-[[n\x82\xaa\xb3\xdb\xdd\xe1\xec\r\x13\x13\x1d\x1en\x8b\x8e\x8f\x95\x96\x9c\x9c\xa3\xbe\xc1\xc8\x11;G_a\x92\xa3\xe3\xf2\x0e55QQYu\u007f\x87\x88\x89\x98\xcd\xd8\xea\x03;PPmmz\xb2\xbc\xc6\xc9\xd6\xe5\xe9\xf6\x15$:cgx\u007f\x81\x87\x97\x9d\xa0"

Expected
"\x1cK\bbhn¿\x05\x12K\e\u0081¶¶×õ\x04\b\x14\x14\x1a <D\c|\u0088\u009b¯²ÆÏàççÿ\x05\x06\x13\x14\x16#8b\u0082\u0087\u0090\u00a0±ÀÊÐäþ\x0f\x19"%==z¥©¾ÃÑâäçõ÷øù\x01\x11),9Nnou|\u0084°Àú\x04\x04\x06\x10**-Hi\u007f\u0084¥©«ÈÞì"
to equal
"\x1cK\bbhn\xbf\x05\x12K\e\x81\xb6\xb6\xd7\xf5\x04\b\x14\x14\x1a <D\c|\x88\x9b\xaf\xb2\xc6\xcf\xe0\xe7\xe7\xff\x05\x06\x13\x14\x16#8b\x82\x87\x90\xa0\xb1\xc0\xca\xd0\xe4\xfe\x0f\x19"%==z\xa5\xa9\xbe\xc3\xd1\xe2\xe4\xe7\xf5\xf7\xf8\xf9\x01\x11),9Nnou|\x84\xb0\xc0\xfa\x04\x04\x06\x10**-Hi\u007f\x84\xa5\xa9\xab\xc8\xde\xec"

Thank you! It works. An enjoyable kata, as your other math-related.

It passes tests, yet when I submit it as a solution I get the error

I did

Golang seems to be broken. Yet the tests pass

codewarrior/kata_test

./kata_test.go:62: undefined: Mul

Yep, I got everything correct except sorting. It is not clear from the description how to do the sorting exactly

Nice kata! Yet, I had to guess how to sort the columns by date. If it could be made more clear on how to correctly sort the columns this kata would deffinately benefit.