Check out example codes for "convert dictionary to array swift". It will help you in understanding the concepts better.
Code Example 1
let dic = ["1":"a", "2":"b", "3":"c"]
let arrayOfKeys = Array(dic.keys.map{ $0 })
print(arrayOfKeys) // [1, 2, 3]
let arrayOfValues = Array(dic.values.map{ $0 })
print(arrayOfValues) // [a, b, c]
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