Updated Node to v12

• Node 12 should be enabled (Refer this and this for more info)

it's just arabic "right to left" unicode symbol that causes other characters to turn around

Can someone please explain this answer or give clues as to what articles or links can explain how this works and why it works?

• added both in sample and fixed tests
• random tests updated to enforce the behavior fo sure
• description update

The expected result for makeEveryLetterAfterXCaps('aaaa', 'a') (which is "aAaA" according to the reference solution) should be explicitly specified in the description and you should add such a fixed test.

Regards,

suic

Damn, you're right. Thanks! 👍

They're not. Expected and actual results have letters in different capitalization if you look carefully.

Problem is that expected and the provided outputs are the same.

All but a few solutions got invalidated when the random tests are added, so I'm pretty sure the random tests are okay ;-)

(Also, they're impossible to debug without knowing what the original inputs are)

I think there is an issue with the tests:

Expected: 'MMVm8 TRgyy5PS7sQRhxLGF1rgoS oDERo1 6Kvh8uur1NFw8 hsRNzWg XCmtMOOUGn BFb4nZxt7gRgNEjq2Hi f11atHh EeW51xFYdjZwuFRr bekhsr fcR6M lD h7ZmGze lvv7rTwLTl43KiKvcJBkC4UJ TsD8ZicApcQnF7KZxWzm47 dba2K 9X9HMEaLgNBU', instead got: 'MMvm8 TRgyy5PS7sQRhxLGF1rgoS oDERo1 6Kvh8uur1NFw8 hsRNzWg XCmtMOOUGn BFb4nZxt7gRgNEjq2Hi f11atHh EeW51xFYdjZwuFRr bekhsr fcR6M lD h7ZmGze lvv7rTwLTl43KiKvcJBkC4UJ TsD8ZicApcQnF7KZxWzm47 dba2K 9X9HMEaLgNBU'

Expected: 'WNWSpBd2066Uo LQQy aYU5JQNRqkGOvR9 a Wdk 0KtcqFFYuYAKXv2 AyyIUJoD1fN6NaxoLdC 5Zq7Au VaUwias3ICPFC15SZeLrb1Hx W1SrW9nxX6a76ns czZmEHv4fXbsgum', instead got: 'WNWSpBd2066Uo LQQy aYU5JQNRqkGOvR9 a Wdk 0KtcqFFyuYAKXv2 AyyIUJoD1fN6NaxoLdC 5Zq7Au VaUwias3ICPFC15SZeLrb1Hx W1SrW9nxX6a76ns czZmEHv4fXbsgum'

Expected: 'UGhmUpB lN7Cdc0 SXuyMfiBGS99SwbfujRl EIxVfk5AyZ3TI5 6N5WyrmRqQKqiQYj UlG9InMxnH0WBi gAS28YsOWRgb ChFGY1rWnZ', instead got: 'UGhmUpB lN7Cdc0 SXuyMfiBGS99swbfujRl EIxVfk5AyZ3TI5 6N5WyrmRqQKqiQYj UlG9InMxnH0WBi gAS28YsOWRgb ChFGY1rWnZ'

Fixed and fixed

You should specify in the description if the match should be or not case sensitive.

You should not mutate the input array.

The tests compare the returned array with the input. It's definitely an issue but if you sort in place than it should pass.