@kikon

Final question. And once again, very grateful for walking me through this.

I think I understand everything except for this condition i - j - 1 < new_str.length as part of that double condition if statement**.** You explained the role of

i - j - 1 < new_str.length

as follows:

• The first condition of the same if -- i - j - 1 < new_str.length results in ignoring all the positions that are not in the initial string. So we can write the imaginary strings as '*bcddc?' and '**cddc??' where * stands for a character that is ignored for the palindrome test.

How does i - j - 1 < new_str.length ignore all of the positions of the initial 6 character string, and by ignoring those those positions, such as

'*bcddc?'

does that mean that b is now index 0, c is index 1, and so forth?