Array
Domain: Data Structures
🎯 Motivation
When you need to store many items of the same type in order and access them quickly by position, arrays are the simplest choice.
📋 Concrete Example
In Python: scores = [85, 92, 78, 90]. Access scores[0] to get 85. You can change scores[1] = 95 instantly.
🔗 Analogy
A row of numbered lockers in a school hallway. Each locker has a number (index) and holds one item. You walk straight to locker 0 or locker 3 without checking the others.