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Grokking the Coding Interview Patterns

Next Palindrome Using Same Digits

Explore how to identify and construct the next smallest palindrome larger than a given palindrome using the two pointers method. Learn to analyze palindrome properties and apply digit rearrangement techniques efficiently for coding interviews.

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Statement

Given a numeric string, numStr, representing a palindromeA palindrome is a number that reads the same backward as it does forward. (composed only of digits). Return the smallest palindrome larger than numStr that can be created by rearranging its digits. If no such palindrome exists, return an empty string "".

Consider the following example to understand the expected output for a given numeric string:

  • input string = ...