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Populating a List with a contiguous range of integers

I’d like to have a list which contains the integers in the range 1 to 500. Is there some way to create this list using Guava (or just plain Java) without having to loop through the range and add the values individually within my own code?

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Answer

Using Guava, you can resort to a Range: https://guava.dev/releases/19.0/api/docs/com/google/common/collect/Range.html

Of course, there will still be loops in your code, but they just might be hidden from the code for simplicity sake.

For instance:

Range<Integer> yourValues = Range.closed(1, 500);

Check https://github.com/google/guava/wiki/RangesExplained for some more examples.

Keep in mind that if you do need to eventually iterate over the Range, you cannot do so directly, only through using DiscreteDomains.integers().

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