1930. Unique Length-3 Palindromic Subsequences
MediumHash Table · String · Bit Manipulation · Prefix Sum · 28:29
LeetCode problem 1930, Unique Length-3 Palindromic Subsequences, was LeetCode's Daily Challenge on Tuesday, November 14, 2023. It's rated medium. codestorywithMIK explains the approach step by step in the video above.