Question

How to remove duplicates from string array in Swift

Answer 1

func removeDuplicates(array: [String]) -> [String] {
    var arr: [String] = []
    
    for s in array {
        if !arr.contains(s) {
            arr.append(s)
        }
    }
    return arr
}

var arr: [String] = ["swift", "c++", "java", "java", "swift", "swift"]
print(arr)

arr = removeDuplicates(array: arr)
print(arr)




/*
run:

["swift", "c++", "java", "java", "swift", "swift"]
["swift", "c++", "java"]

*/

 

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