Dsa
Strings
Easy
Find Missing Characters
Given a string that contains only lowercase letters, identify which characters from the alphabet (a-z) are missing from the string.
Input:
The input is a single line containing the string s (1 ≤ |s| ≤ 100).
Output:
Print the missing characters in alphabetical order, or 'None' if no characters are missing.
Example:
Input:
aegmnopq
Output:
bcdefhijrsuvwxyz
Key concepts
stringsmissingcharacters
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