22222

ABC 394
All Problems

Problem 22 of 50

Easy

What to do

Given a string of digits, remove every character that is not '2' and return the remaining string. For example, '20250222' → '22222'.

Key Concepts

string manipulation loops conditional statements

Examples

Input: s = '20250222'

Output: 22222

Input: s = '2'

Output: 2

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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

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