Write a function called Unzipstring that takes a string that will be a kind of code, and your function will have to decrypt it and return a new string with the output.
Write a function called `Unzipstring` that takes a string that will be a kind of code, and your function will have to decrypt it and return a new string with the output.
It works as follows:
The string will be formed by a number followed by a letter, and the purpose is to print this letter the number of times that is requested by the number that precedes it.
"3w" ==> www
"2m3e" ==> mmee
- The number before the letter must be between 0 and 9.
- The letter after each number must be between a and z or A and Z.
- The number before the letter must be between `0` and `9`.
- The letter after each number must be between `a` and `z` or `A` and `Z`.
- You cannot have two numbers or two letters in a row.
- If the input string does not respect the format, return Invalid Input.
- If the input string does not respect the format, return `Invalid Input`.
zainabdnaya
2 years ago
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