string (chuỗi), two-pointers (hai con trỏ), dp-general (quy hoạch động cơ bản), manacher

Assembly, Awk, C, C#, C++, Clang, Cobol, D, Groovy, Haskell, JS, Java, Kotlin, Lua, Node JS, OCaml, ObjectiveC, Output, PHP, Pascal, Perl, Prolog, Pypy, Pypy 3, Python, Ruby, Rust, Scala, Scratch, Swift