13 lines
244 B
Swift
13 lines
244 B
Swift
func randBrack(n: Int) -> String {
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var bracks: [Character] = Array(Repeat(count: n, repeatedValue: "["))
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for i in UInt32(n+1)...UInt32(n + n) {
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bracks.insert("]", atIndex: Int(arc4random_uniform(i)))
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}
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return String(bracks)
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}
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