Write a program to remove duplicate elements from array

Ans : 


    Method - 1 : 

    extension Array where Element: Equatable {

        mutating func removeDuplicates() {

            var result = [Element]()

            for value in self {

                if !result.contains(value) {

                    result.append(value)

                }

            }

            self = result

        }

    }

   Use : 

var faa = [3, 0, 1, 0, 3, 1, 2, 0, 1, 2]

faa.removeDuplicates()

output = [3,0,1,2]


Method - 2

 let unique = Array(Set(originals))

Set is collection of unique and unordered elements. So we have converted array to set here to remove duplicate. Output array does not have same order as original.