func minMax(array: [Int]) -> (min: Int, max: Int) { var currentMin = array[0] var currentMax = array[0] for value in array[1..<array.count] { if value < currentMin { currentMin = value } else if value > currentMax { currentMax = value } } return (currentMin, currentMax) } let bounds = minMax(array: [8, -6, 2, 109, 3, 71]) print("最小值为 \(bounds.min) ，最大值为 \(bounds.max)")