Topic
Odd Length Palindrome
1 post about Odd Length Palindrome by 1 contributor.
Know Odd Length Palindrome? Share what you know with developers who are learning it.
+ Follow Odd Length PalindromeBe the first to follow this
- Articles
- 1
- Contributors
- 1
Everything about Odd Length Palindrome
- Article · Data Structures and Algorithms (DSA)
Count Palindromic Strings with Constraints
Learn how to count palindromic strings of length up to n using the first k lowercase English letters, where no character appears more than twice. This article explains the key palindrome observations, separates even and odd-length cases, derives the permutation formulas, and provides an efficient Java solution using modular arithmetic. The solution achieves O(k) time complexity and O(1) auxiliary space.
