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"title": "Find Palindrome With Fixed Length",
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"content": "<p>Given an integer array <code>queries</code> and a <strong>positive</strong> integer <code>intLength</code>, return <em>an array</em> <code>answer</code> <em>where</em> <code>answer[i]</code> <em>is either the </em><code>queries[i]<sup>th</sup></code> <em>smallest <strong>positive palindrome</strong> of length</em> <code>intLength</code> <em>or</em> <code>-1</code><em> if no such palindrome exists</em>.</p>\n\n<p>A <strong>palindrome</strong> is a number that reads the same backwards and forwards. Palindromes cannot have leading zeros.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> queries = [1,2,3,4,5,90], intLength = 3\n<strong>Output:</strong> [101,111,121,131,141,999]\n<strong>Explanation:</strong>\nThe first few palindromes of length 3 are:\n101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 201, ...\nThe 90<sup>th</sup> palindrome of length 3 is 999.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> queries = [2,4,6], intLength = 4\n<strong>Output:</strong> [1111,1331,1551]\n<strong>Explanation:</strong>\nThe first six palindromes of length 4 are:\n1001, 1111, 1221, 1331, 1441, and 1551.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= queries.length <= 5 * 10<sup>4</sup></code></li>\n\t<li><code>1 <= queries[i] <= 10<sup>9</sup></code></li>\n\t<li><code>1 <= intLength <= 15</code></li>\n</ul>\n",
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"code": "class Solution {\npublic:\n vector<long long> kthPalindrome(vector<int>& queries, int intLength) {\n \n }\n};",
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"code": "class Solution {\n public long[] kthPalindrome(int[] queries, int intLength) {\n \n }\n}",
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"code": "class Solution(object):\n def kthPalindrome(self, queries, intLength):\n \"\"\"\n :type queries: List[int]\n :type intLength: int\n :rtype: List[int]\n \"\"\"\n ",
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"code": "class Solution:\n def kthPalindrome(self, queries: List[int], intLength: int) -> List[int]:\n ",
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"code": "\n\n/**\n * Note: The returned array must be malloced, assume caller calls free().\n */\nlong long* kthPalindrome(int* queries, int queriesSize, int intLength, int* returnSize){\n\n}",
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"code": "public class Solution {\n public long[] KthPalindrome(int[] queries, int intLength) {\n \n }\n}",
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"code": "/**\n * @param {number[]} queries\n * @param {number} intLength\n * @return {number[]}\n */\nvar kthPalindrome = function(queries, intLength) {\n \n};",
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"code": "# @param {Integer[]} queries\n# @param {Integer} int_length\n# @return {Integer[]}\ndef kth_palindrome(queries, int_length)\n \nend",
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"code": "class Solution {\n func kthPalindrome(_ queries: [Int], _ intLength: Int) -> [Int] {\n \n }\n}",
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"code": "class Solution {\n fun kthPalindrome(queries: IntArray, intLength: Int): LongArray {\n \n }\n}",
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"code": "impl Solution {\n pub fn kth_palindrome(queries: Vec<i32>, int_length: i32) -> Vec<i64> {\n \n }\n}",
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"lang": "PHP",
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"code": "class Solution {\n\n /**\n * @param Integer[] $queries\n * @param Integer $intLength\n * @return Integer[]\n */\n function kthPalindrome($queries, $intLength) {\n \n }\n}",
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"code": "function kthPalindrome(queries: number[], intLength: number): number[] {\n\n};",
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"code": "(define/contract (kth-palindrome queries intLength)\n (-> (listof exact-integer?) exact-integer? (listof exact-integer?))\n\n )",
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"code": "defmodule Solution do\n @spec kth_palindrome(queries :: [integer], int_length :: integer) :: [integer]\n def kth_palindrome(queries, int_length) do\n\n end\nend",
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"hints": [
"For any value of queries[i] and intLength, how can you check if there exists at least queries[i] palindromes of length intLength?",
"Since a palindrome reads the same forwards and backwards, consider how you can efficiently find the first half (ceil(intLength/2) digits) of the palindrome."
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