From 77751633dc8d67ec2505d2fd111a603fa0b55469 Mon Sep 17 00:00:00 2001 From: mrlee7 Date: Mon, 16 Mar 2026 19:12:13 +0900 Subject: [PATCH 1/3] valid palindrome solution --- valid-palindrome/mrlee7.py | 7 +++++++ 1 file changed, 7 insertions(+) create mode 100644 valid-palindrome/mrlee7.py diff --git a/valid-palindrome/mrlee7.py b/valid-palindrome/mrlee7.py new file mode 100644 index 000000000..e4983e01d --- /dev/null +++ b/valid-palindrome/mrlee7.py @@ -0,0 +1,7 @@ +import re + + +class Solution: + def isPalindrome(self, s: str) -> bool: + result = re.sub(r'[^a-zA-Z0-9]', '', s).lower() + return result == result[::-1] From c36dd0c024e0030aab4dc345fe46387572b6f4c7 Mon Sep 17 00:00:00 2001 From: mrlee7 Date: Tue, 17 Mar 2026 21:20:38 +0900 Subject: [PATCH 2/3] number of 1 bits solution --- number-of-1-bits/mrlee7.py | 9 +++++++++ 1 file changed, 9 insertions(+) create mode 100644 number-of-1-bits/mrlee7.py diff --git a/number-of-1-bits/mrlee7.py b/number-of-1-bits/mrlee7.py new file mode 100644 index 000000000..dae830146 --- /dev/null +++ b/number-of-1-bits/mrlee7.py @@ -0,0 +1,9 @@ +class Solution: + def hammingWeight(self, n: int) -> int: + result = 0 + + while n > 0: + result += n % 2 + n //= 2 + return result + From 203d69c39bea03ba1aa427bfeb6a3898773d8d91 Mon Sep 17 00:00:00 2001 From: mrlee7 Date: Tue, 17 Mar 2026 21:21:14 +0900 Subject: [PATCH 3/3] formatting code --- number-of-1-bits/mrlee7.py | 1 - 1 file changed, 1 deletion(-) diff --git a/number-of-1-bits/mrlee7.py b/number-of-1-bits/mrlee7.py index dae830146..6b1b7f37d 100644 --- a/number-of-1-bits/mrlee7.py +++ b/number-of-1-bits/mrlee7.py @@ -6,4 +6,3 @@ def hammingWeight(self, n: int) -> int: result += n % 2 n //= 2 return result -