Contest-LeetCode5175. Can Make Palindrome from Substring(unfinished)

àì夳堔傛蜴生んèń 2023-08-17 15:15 11阅读 0赞

### 5175. Can Make Palindrome from Substring ###

[My Submissions][] [Back to Contest][]

*  User Accepted:795
 *  User Tried:1923
 *  Total Accepted:809
 *  Total Submissions:5059
 *  Difficulty:Medium

Given a string `s`, we make queries on substrings of `s`.

For each query `queries[i] = [left, right, k]`, we may rearrange the substring `s[left], ..., s[right]`, and then choose up to `k` of them to replace with any lowercase English letter.

If the substring is possible to be a palindrome string after the operations above, the result of the query is `true`. Otherwise, the result is `false`.

Return an array `answer[]`, where `answer[i]` is the result of the `i`\-th query `queries[i]`.

Note that: Each letter is counted individually for replacement so if for example `s[left..right] = "aaa"`, and `k = 2`, we can only replace two of the letters. (Also, note that the initial string `s` is never modified by any query.)

Example :

Input: s = "abcda", queries = [[3,3,0],[1,2,0],[0,3,1],[0,3,2],[0,4,1]]
    Output: [true,false,false,true,true]
    Explanation:
    queries[0] : substring = "d", is palidrome.
    queries[1] : substring = "bc", is not palidrome.
    queries[2] : substring = "abcd", is not palidrome after replacing only 1 character.
    queries[3] : substring = "abcd", could be changed to "abba" which is palidrome. Also this can be changed to "baab" first rearrange it "bacd" then replace "cd" with "ab".
    queries[4] : substring = "abcda", could be changed to "abcba" which is palidrome.

Constraints:

*  `1 <= s.length, queries.length <= 10^5`
 *  `0 <= queries[i][0] <= queries[i][1] < s.length`
 *  `0 <= queries[i][2] <= s.length`
 *  `s` only contains lowercase English letters.

转载于:https://www.cnblogs.com/Marigolci/p/11442610.html

[My Submissions]: https://leetcode.com/contest/weekly-contest-152/problems/can-make-palindrome-from-substring/submissions/
[Back to Contest]: https://leetcode.com/contest/weekly-contest-152/