Reverse String With Token Filter | Dataford Interview Questions

Write a function StringChallenge(str) that returns the input string in reversed order, then remove any characters (case-insensitive) from the reversed result that appear in ChallengeToken (0123456789); if the new final string is empty, return the string EMPTY. Implement StringChallenge(str) and return a string. The fixed ChallengeToken is 0123456789, so all digits must be removed after reversal.

Constraints

0 <= len(str) <= 1000
str contains standard printable characters
ChallengeToken is the fixed string "0123456789"
Return exactly "EMPTY" when the filtered result is empty

Function Signature

def StringChallenge(str):

Your question is Reverse String With Token Filter. Start with the requirements in the Question tab.

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Problem

Constraints

0 <= len(str) <= 1000
str contains standard printable characters
ChallengeToken is the fixed string "0123456789"
Return exactly "EMPTY" when the filtered result is empty

Function Signature

def StringChallenge(str):

Your question is Reverse String With Token Filter. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.