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Bug Report for valid-palindrome-ii #4210

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gionapaolini opened this issue Jun 1, 2025 · 0 comments
Open

Bug Report for valid-palindrome-ii #4210

gionapaolini opened this issue Jun 1, 2025 · 0 comments

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@gionapaolini
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Bug Report for https://neetcode.io/problems/valid-palindrome-ii

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

This submission passes but it's incorrect:

class Solution:
    def validPalindrome(self, s: str) -> bool:
        p1, p2 = 0, len(s)-1
        removed = False

        while p1<p2:
            if s[p1] != s[p2]:
                if removed:
                    return False
                if s[p1+1]==s[p2]:
                    removed=True
                    p1+=1
                elif s[p1]==s[p2-1]:
                    removed=True
                    p2-=1
                else: return False
            p1 += 1
            p2 -= 1
        return True

It fails with this test case:

s="aguokepatgbnvfqmgmlcupuufxoohdfpgjdmysgvhmvffcnqxjjxqncffvmhvgsymdjgpfdhooxfuupuculmgmqfvnbgtapekouga"
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