From f990d1bd32514d74148ce5113f22f7adfc9fd1ab Mon Sep 17 00:00:00 2001 From: unknown Date: Sat, 11 Apr 2026 18:35:10 +0530 Subject: [PATCH 1/2] Add input validation to reverse_letters function --- strings/reverse_letters.py | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/strings/reverse_letters.py b/strings/reverse_letters.py index cd1b7832d066..f3b5e7dadbb0 100644 --- a/strings/reverse_letters.py +++ b/strings/reverse_letters.py @@ -12,6 +12,12 @@ def reverse_letters(sentence: str, length: int = 0) -> str: >>> reverse_letters("racecar") 'racecar' """ + if not isinstance(sentence, str): + raise TypeError("sentence must be a string") + + if not isinstance(length, int) or length < 0: + raise ValueError("length must be a non-negative integer") + return " ".join( word[::-1] if len(word) > length else word for word in sentence.split() ) From 5d93c442a7fb56e83767dfad1b2abfc998ef7ed1 Mon Sep 17 00:00:00 2001 From: "pre-commit-ci[bot]" <66853113+pre-commit-ci[bot]@users.noreply.github.com> Date: Sat, 11 Apr 2026 13:07:55 +0000 Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci --- strings/reverse_letters.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/strings/reverse_letters.py b/strings/reverse_letters.py index f3b5e7dadbb0..770796f8110e 100644 --- a/strings/reverse_letters.py +++ b/strings/reverse_letters.py @@ -17,7 +17,7 @@ def reverse_letters(sentence: str, length: int = 0) -> str: if not isinstance(length, int) or length < 0: raise ValueError("length must be a non-negative integer") - + return " ".join( word[::-1] if len(word) > length else word for word in sentence.split() )