Matrix

ARRAY

Think of how programmers organize data in rows and columns, often used to store numbers or values efficiently. It starts with the same letter as "algorithm."

"Matrix" often refers to a grid of numbers or data in math and computing, which is exactly what an "array" is—a structured collection of elements. The clue plays on the technical definition rather than the movie The Matrix, keeping it straightforward. Think of a spreadsheet or a table, and you’ve got the idea.