Basics of indexes
Just imagine that we are entering a hypermarket to purchase a few grocery items, which we have already noted on a piece of paper. It's a multistorey store. Being a hypermarket, it has almost all the products, such as grocery items, home appliances, electronics, footwear, and lifestyle items. Since our intention is to purchase grocery items, we start with olive oil, and we find it located on the first floor, but the cookware is not available on the same floor; it's available on the top floor (let's say the tenth floor). After dragging ourselves from the bottom floor to the top floor, we find that we were especially looking to buy a microwave oven, but guess what? It is available on the fifth floor. So we are thinking of getting ...
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