22222 ABC 394 Completed

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Problem 22 of 50

Easy
lightbulb What to do

You have a string made of numbers. Your task is to keep only the number '2' from the string and remove everything else, then show the new string with only '2's in the same order they appeared.

Key Concepts
string manipulation loops conditional statements
Examples

Input: '20250222'

Output: 22222

Input: '2'

Output: 2

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tips_and_updates Tips for Beginners
  • Focus on understanding the logic, not memorizing syntax
  • Use print statements to debug your code
  • Don't worry about input parsing - the function handles that for you
  • If stuck, try writing out your solution on paper first