Why Do Arrays Exist?

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Full transcript

I'm not going to start with code or a technical definition. Instead, let's start with the problem. One of the first words beginners hear is Array. But why did arrays need to exist in the first place? Imagine I give you five numbers: 5, 8, 3, 12, 9. Don't lose them — I'll ask about them later. Most people wouldn't memorize them. They'd write them down. But would you write them like this — 583129 — all jammed together? Probably not. You'd give each number its own space. That simple idea — that's exactly what an array is.

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