Motivation

• Provide a small reusable binary search helper to find an item in a sorted list and return its index or -1 when not found.

Description

• Add binary_search(sorted_items, target) to utils.py that performs an iterative binary search and returns the index of target or -1 if absent.

Testing

• No automated tests were run for this change.

Codex Task

Summary by CodeRabbit

• New Features
  • Added binary search function that returns the index of target items in sorted lists or -1 if not found.

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