How to Solve Minimum Number of Moves to Make Palindrome Problem
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Minimum Number of Moves to Make Palindrome
You are given a string s consisting only of lowercase English letters. In one move, you can select any two adjacent characters of s and swap them. Return the minimum number of moves needed to make s a...
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Understanding the Minimum Number of Moves to Make Palindrome Problem
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Problem Statement
You are given a string s consisting only of lowercase English letters. In one move, you can select any two adjacent characters of s and swap them. Return the minimum number of moves needed to make s a palindrome. Note that the input will be generated such that s can always be converted to a palindrome.
Minimum Number of Moves to Make Palindrome
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Examples
s = "aabb"2We can obtain two palindromes from s, "abba" and "baab". - We can obtain "abba" from s in 2 moves: "aabb" -> "abab" -> "abba". - We can obtain "baab" from s in 2 moves: "aabb" -> "abab" -> "baab". Thus, the minimum number of moves needed to make s a palindrome is 2.
s = "letelt"2One of the palindromes we can obtain from s in 2 moves is "lettel". One of the ways we can obtain it is "letelt" -> "letetl" -> "lettel". Other palindromes such as "tleelt" can also be obtained in 2 moves. It can be shown that it is not possible to obtain a palindrome in less than 2 moves.
Constraints
1 <= s.length <= 2000s consists only of lowercase English letters.s can be converted to a palindrome using a finite number of moves.How Interview Coder Helps with Leetcode Problems
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