{ "data": { "question": { "questionId": "1356", "questionFrontendId": "2193", "boundTopicId": null, "title": "Minimum Number of Moves to Make Palindrome", "titleSlug": "minimum-number-of-moves-to-make-palindrome", "content": "

You are given a string s consisting only of lowercase English letters.

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In one move, you can select any two adjacent characters of s and swap them.

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Return the minimum number of moves needed to make s a palindrome.

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Note that the input will be generated such that s can always be converted to a palindrome.

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Example 1:

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\nInput: s = "aabb"\nOutput: 2\nExplanation:\nWe can obtain two palindromes from s, "abba" and "baab". \n- We can obtain "abba" from s in 2 moves: "aabb" -> "abab" -> "abba".\n- We can obtain "baab" from s in 2 moves: "aabb" -> "abab" -> "baab".\nThus, the minimum number of moves needed to make s a palindrome is 2.\n
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Example 2:

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\nInput: s = "letelt"\nOutput: 2\nExplanation:\nOne of the palindromes we can obtain from s in 2 moves is "lettel".\nOne of the ways we can obtain it is "letelt" -> "letetl" -> "lettel".\nOther palindromes such as "tleelt" can also be obtained in 2 moves.\nIt can be shown that it is not possible to obtain a palindrome in less than 2 moves.\n
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Constraints:

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