Youtube Link Finder - good output, but failed the test cases (solved)

Question

Hi. I expect that it may be a wrong code, but why i can't solve the code coach problem, despite having the right output for first 2 test cases?

https://code.sololearn.com/cuO7fWADj77l/?ref=app

edit:
The problem is, that it failed all the test cases, but I see a right output in two of them.

edit2: Thanks Arsenic! It works now.

Answer 1

Magros you after the for loop your value of j is more than the length so it prints an extra character('\0') in the starting of the string.
A very simple fix is to decrement "j" by one just at the end of the loop👇
https://code.sololearn.com/cFCmNfBoOGdW/?ref=app