Prefix Sum Pattern in Java — A Detailed Guide for Serious Engineers
Prefix Sum is one of the highest-leverage DSA patterns. It converts repeated range computations from repeated work into constant-time lookups after linear pr...
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Sliding Window Technique in Java — A Detailed Guide for Serious Engineers
Sliding Window is a focused form of the Two Pointers technique. If Two Pointers teaches movement strategy, Sliding Window teaches stateful range management.
Java 25 New Features — Complete Guide with Examples
Java 25 is an LTS release (GA on September 16, 2025). This article covers all JDK 25 release JEPs with practical examples.
Java 21 New Features — Complete Guide with Examples
Java 21 is an LTS release with major improvements in concurrency, pattern matching, and collections. This article covers all JDK 21 release JEPs with examples.
Java 17 New Features — Complete Guide with Examples
Java 17 is an LTS release. This article covers the most important JDK 17 changes, with examples and the engineering reason each one was added.