PracticeJava
Practice Java
Below link are just few which help you getting started with interview preparations.
Dynamic Programming: Subset Problem - https://www.youtube.com/watch?v=s6FhG--P7z0 Longest Common Substring - https://www.youtube.com/watch?v=tABtJbLOQho Memoization and Dynamic Programming : https://www.youtube.com/watch?v=P8Xa2BitN3I