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  1. Prepare
  2. Algorithms
  3. Strings
  4. Palindrome Index
  5. Discussions

Palindrome Index

  • afzal_saiyed931
     + 0 comments
    def palindromeIndex(s):
    # Write your code here
    
    def isPalindrome(s, start, end):
        while start < end:
            if s[start] != s[end]:
                return False
            start += 1
            end -= 1
        return True
    
    n = len(s)
    start = 0
    end = n - 1
    
    while start < end:
        if s[start] != s[end]:
            
            if isPalindrome(s, start + 1, end):
                return start
            elif isPalindrome(s, start, end - 1):
                return end
            else:
                return -1
        start += 1
        end -= 1
            
    return -1