Binary Search Pattern

The Binary Search pattern is one of the reusable techniques that experienced candidates spot instantly. Rather than memorising individual problems, strong interviewees recognise that a new question "is just Binary Search" and reach for the matching template. That recognition is exactly what this collection is designed to build.

We index 22 problems that use the Binary Search pattern (7 easy, 12 medium, 3 hard), each worked brute-force → optimal in Java and Python with line-by-line explanations. Solving them back-to-back is the fastest way to internalise when and how to apply Binary Search.

Pattern-first practice compounds: once Binary Search is automatic, you'll see it inside problems that never mention it by name.