Algnote lets developers or CS students easily review data structures and algorithms from theory, implementation to coding problems. If you are a programmer looking for your first programming job and preparing for coding interviews, or a student who is preparing for exams about data structures and algorithms, this app could be a right fit for you.All the algorithms and data structures are implemented in Java and C. Therefore, if you want to use the Algnote to learn coding, please make sure you are comfortable with Java and C.