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1. Check Anagram2. Check if Substring Exists3. Count Substring Occurrences4. Extract Numbers from String5. Sum of Numbers in String6. Check if All Characters Same7. Remove Adjacent Duplicates8. Find First Non-Repeating Character9. Find Most Frequent Character10. Check String Rotation11. Longest Common Prefix12. String Compression13. Valid Parentheses Check14. Reverse Words in String

Check if All Characters Same

Check if all characters in string are same.

IntermediatePhase 5 - Category 5: Advanced String LogicExample 6 of 14
check-if-all-characters-same.py
1# Take string input
2s = input("Enter a string: ")
3

4# Check if all same
5if len(s) == 0:
6    print("Empty string")
7elif len(set(s)) == 1:
8    print("All characters are same")
9else:
10    print("Characters are different")

Output

Enter a string: aaaa
All characters are same

Enter a string: hello
Characters are different

What's going on

Use set to check unique characters.

Key Concepts:

set(s) gives unique characters
If length is 1, all same
Otherwise, different

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