Why testcases failing?

#1

Sir, some testcases of my submission are failing,
help me whats the issue.
here is my code

#2

hi @sumitlohan
your test cases are failing for the cases when value of k is greater than the size.
in such cases you should take mode(%) of k with n and then call appendLastn function.

#3

@sumitlohan
please mark your doubt as resolved and rate my work as well

#4

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