How can I repeat an element count times in a function?

Question

Swift

Condition:
Write a function called repeatString which repeats the given String src exactly count times.
repeatStr(6, "I") // "IIIIII"
repeatStr(5, "Hello") // "HelloHelloHelloHelloHello"
Initial function:
func repeatStr(_ n: Int, _ string: String) -> String {
// Code here
return ""
}

Answer 1

Three options at a glance (by difficulty level):

func repeatStr0(_ n: Int, _ string: String) -> String {
            var accumulator = ""
            for _ in 0 ..< n {
                accumulator.append(string)
            }
            return accumulator
        }

        func repeatStr1(_ n: Int, _ string: String) -> String {
            var accumulator = ""
            (0 ..< n).forEach {_ in accumulator.append(string) }
            return accumulator
        }

        func repeatStr2(_ n: Int, _ string: String) -> String {
            return (0 ..< n).reduce(into: "") { s, _ in s.append(string) }
        }

1 more, bonus:
repeatElement("asd", count: 5).joined()