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| func rotFinal(msg: String, key: String, op: (UInt32, UInt32) -> UInt32) -> String { | |
| return String(zip(msg.unicodeScalars.map{$0.value}, String(repeating: key, count: (msg.count / key.count) + 1) | |
| .unicodeScalars.map{$0.value}) | |
| .map{Character(UnicodeScalar(op($0.0, $0.1))!)}) | |
| } |
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