With Set you don't have to implement duplication control manually, it provides it to you for free. If you add the same value for the second time, Set will just ignore it, while with Array you'll have the duplicate and you'll have to add more code to handle this case.
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With
Setyou don't have to implement duplication control manually, it provides it to you for free. If you add the same value for the second time,Setwill just ignore it, while withArrayyou'll have the duplicate and you'll have to add more code to handle this case.