{ "data": { "question": { "questionId": "1375", "questionFrontendId": "5253", "categoryTitle": "Algorithms", "boundTopicId": 1366026, "title": "Find Palindrome With Fixed Length", "titleSlug": "find-palindrome-with-fixed-length", "content": "

Given an integer array queries and a positive integer intLength, return an array answer where answer[i] is either the queries[i]th smallest positive palindrome of length intLength or -1 if no such palindrome exists.

\n\n

A palindrome is a number that reads the same backwards and forwards. Palindromes cannot have leading zeros.

\n\n

 

\n

Example 1:

\n\n
\nInput: queries = [1,2,3,4,5,90], intLength = 3\nOutput: [101,111,121,131,141,999]\nExplanation:\nThe first few palindromes of length 3 are:\n101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 201, ...\nThe 90th palindrome of length 3 is 999.\n
\n\n

Example 2:

\n\n
\nInput: queries = [2,4,6], intLength = 4\nOutput: [1111,1331,1551]\nExplanation:\nThe first six palindromes of length 4 are:\n1001, 1111, 1221, 1331, 1441, and 1551.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "找到指定长度的回文数", "translatedContent": "

给你一个整数数组 queries 和一个 正 整数 intLength ，请你返回一个数组 answer ，其中 answer[i] 是长度为 intLength 的 正回文数 中第 queries[i] 小的数字，如果不存在这样的回文数，则为 -1 。

\n\n

回文数 指的是从前往后和从后往前读一模一样的数字。回文数不能有前导 0 。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：queries = [1,2,3,4,5,90], intLength = 3\n输出：[101,111,121,131,141,999]\n解释：\n长度为 3 的最小回文数依次是：\n101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 201, ...\n第 90 个长度为 3 的回文数是 999 。\n
\n\n

示例 2：

\n\n
\n输入：queries = [2,4,6], intLength = 4\n输出：[1111,1331,1551]\n解释：\n长度为 4 的前 6 个回文数是：\n1001, 1111, 1221, 1331, 1441 和 1551 。\n
\n\n

 

\n\n

提示：

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