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Add input validation to palindrome functions #14540

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Add input validation to palindrome functions #14540

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f990d1b
Add input validation to reverse_letters function
shineyrbl-byte Apr 11, 2026
5d93c44
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Apr 11, 2026
f6e7db6
Add input validation to palindrome functions
shineyrbl-byte Apr 12, 2026
49f57d2
[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Apr 12, 2026
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[pre-commit.ci] auto fixes from pre-commit.com hooks 
for more information, see https://pre-commit.ci
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pre-commit-ci[bot] committed Apr 12, 2026
commit 49f57d298fb14fc673407f15ee4fb7c96ccb714e
4 changes: 2 additions & 2 deletions strings/palindrome.py
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,7 @@ def is_palindrome_traversal(s: str) -> bool:
"""
if not isinstance(s, str):
raise TypeError("Input must be a string")

end = len(s) // 2
n = len(s)

Expand All @@ -75,7 +75,7 @@ def is_palindrome_recursive(s: str) -> bool:
"""
if not isinstance(s, str):
raise TypeError("Input must be a string")

if len(s) <= 1:
return True
if s[0] == s[len(s) - 1]:
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