How to Solve Find Palindrome With Fixed Length Problem
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Find Palindrome With Fixed Length
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 pal...
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Understanding the Find Palindrome With Fixed Length Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
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. A palindrome is a number that reads the same backwards and forwards. Palindromes cannot have leading zeros.
Find Palindrome With Fixed Length
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Examples
queries = [1,2,3,4,5,90], intLength = 3[101,111,121,131,141,999]The first few palindromes of length 3 are: 101, 111, 121, 131, 141, 151, 161, 171, 181, 191, 202, ... The 90th palindrome of length 3 is 999.
queries = [2,4,6], intLength = 4[1111,1331,1551]The first six palindromes of length 4 are: 1001, 1111, 1221, 1331, 1441, and 1551.
Constraints
1 <= queries.length <= 5 * 1041 <= queries[i] <= 1091 <= intLength <= 15How Interview Coder Helps with Leetcode Problems
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