Personally, my favorite algorithms/data structures books is Algorithms 4th ed by Sedgwick and Wayne. It does a great job explaining the material from a theoreti

Personally, my favorite algorithms/data structures books is Algorithms 4th ed by Sedgwick and Wayne. It does a great job explaining the material from a theoretical standpoint, but also focuses on practical application in addressing real problems, and every algorithm comes with real, working Java code that in some cases is even superior to the implementations in the standard Java libraries. And it perfectly accompanies Sedgwick's free algorithms course on Coursera.