Whats wrong with the code? Whats wrong with the code?

#1

Whats wrong with the code? Whats wrong with the code? Whats wrong with the code? Whats wrong with the code?

#2

Link is in description above.

#3

You are not updating the new character in original string.
I have commented the part, where you are not updating.
Your working code.

#4

Ohh Thanks! Feeling stupid now xD