write a function named `Unzipstring` that takes a string in form of a number and an alphabet (like 3w or 2m3e) then returns the original string (3w ==> www and 2m3e ==> mmeee).
write a function named `Unzipstring` that takes a string in form of a number and an alphabet (like 3w or 2m3e) then returns a new string (3w ==> www and 2m3e ==> mmeee).
- The number before the alphabet should be between 0 to 9.
- The one alphabet after each number should be between a to z or A to Z.