Some of that data can be compressed, while other parts can’t. Actual files are jam-packed with all sorts of data. Of course, this is an elementary example. However, by using the key – the original list and number associations – you can restore the compressed lists to their original state without losing data or fidelity. Storing these lists of numbers is significantly shorter, thus taking up substantially less space than keeping all of the original lists. 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Indigo 7 VioletĮach list using one of those terms can now be expressed as numbers.So your first list stays the same, but each unique word is assigned a number. ZIP compression identifies redundant data and creates an index. Every letter of every word takes up a bit of space. Writing out every variation of this list takes up a lot of space. Violet, Indigo, Orange, Red, Yellow, Blue, Green.Green, Violet, Blue, Yellow, Indigo, Red, Orange.Orange, Red, Green, Yellow, Violet, Indigo, Blue.In addition to the original list, you might have: Now say you have a series of lists that are all rearrangements of these seven items. Red, Orange, Yellow, Green, Blue, Indigo, Violet.Imagine that you have a list of seven items, something like this: ZIP files, are a form of file compressions using an algorithm and process initially developed in 1989. Are There Drawbacks to Using Zip Files? A Quick Background on How ZIP Files Save Storage Space
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