Architecture & LLD Preview
Iterator Pattern
Access elements of an aggregate object sequentially without exposing its underlying representation.
Iterator pattern abstracts collection traversals behind standard next and hasNext API checkpoints.
Core Design Challenge
"How do we traverse inventory lists in various directions without coupling clients to internal array representations?"
What You'll Learn:
- ✦Traversing elements of a collection without exposing internals
- ✦Abstracting traversals (forward, reverse, filtered, etc.)
- ✦Supporting multiple active cursors traversing simultaneously
- ✦Decoupling client logic from collection data structures