How to Solve Lexicographically Smallest Palindrome Problem
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Lexicographically Smallest Palindrome
You are given a string s consisting of lowercase English letters, and you are allowed to perform operations on it. In one operation, you can replace a character in s with another lowercase English let...
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Understanding the Lexicographically Smallest Palindrome Problem
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Problem Statement
You are given a string s consisting of lowercase English letters, and you are allowed to perform operations on it. In one operation, you can replace a character in s with another lowercase English letter. Your task is to make s a palindrome with the minimum number of operations possible. If there are multiple palindromes that can be made using the minimum number of operations, make the lexicographically smallest one. A string a is lexicographically smaller than a string b (of the same length) if in the first position where a and b differ, string a has a letter that appears earlier in the alphabet than the corresponding letter in b. Return the resulting palindrome string.
Lexicographically Smallest Palindrome
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Examples
s = "egcfe""efcfe"The minimum number of operations to make "egcfe" a palindrome is 1, and the lexicographically smallest palindrome string we can get by modifying one character is "efcfe", by changing 'g'.
s = "abcd""abba"The minimum number of operations to make "abcd" a palindrome is 2, and the lexicographically smallest palindrome string we can get by modifying two characters is "abba".
s = "seven""neven"The minimum number of operations to make "seven" a palindrome is 1, and the lexicographically smallest palindrome string we can get by modifying one character is "neven".
Constraints
1 <= s.length <= 1000s consists of only lowercase English letters.How Interview Coder Helps with Leetcode Problems
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