Answer 1

1bzz has 4 characters so it enters the loop.
The first character from the right of the string is a 'z', so it is then changed to a 'c'.
1bzc is 4 characters so it enters the loop.
All 'if's fail and the string becomes 1bzc*.
Print because 1bzc* is greater than 4 characters and it does not go back in loop.