2131. Longest Palindrome by Concatenating Two Letter Words
MediumArray · Hash Table · String · Greedy · Counting · 17:35
LeetCode problem 2131, Longest Palindrome by Concatenating Two Letter Words, was LeetCode's Daily Challenge on Sunday, May 25, 2025. It's rated medium. codestorywithMIK explains the approach step by step in the video above.