How do I check swift if two arrays contain the same elements, regardless of the order in which they appear?

problem ：

Let's say there are two arrays... Let's say there are two arrays ...

var array1 = ["a", "b", "c"]var array2 = ["b", "c", "a"]

I'd like the result of the comparison of these two arrays to be true, and the following... I hope the comparison between these two arrays is true , following ...

var array1 = ["a", "b", "c"]var array2 = ["b", "c", "a", "d"]

...to be false.…… fake .How can I achieve that in Swift? How can I be in Swift To achieve this ？I tried to convert both arrays to sets but for some reason Set() keeps removing some (usually duplicated) objects that the array contains. I tried to convert two arrays into collections , But for some reason Set() Keep deleting some of the... Contained in the array （ Usually repeated ） object .

Any help would be appreciated. Any help will be appreciated .

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Solution ：

Reference resources ： https://stackoom.com/en/question/2U37i