Idea for goldenratio161
Typing series #5 --> left and right arrow keys with insert key
This kata will be same kata #4 ( with using left and right arrow keys) but with using insert key "[i]" (it works as on real keyboard with changing next charachter).
First, third, fifth .... appearance of insert key "[i]" switch on inserting and second, fourth, sixth .... appearance of insert key "[i]" switch off inserting.
...or something like that.

May be after converting string to char array null-terminate '\0' is absent at the end of char array

I wonder how deep the recursion can go. It might become a problem for large n