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// 定义一个交换两个变量的函数
func swapTwoValues<T>(_ a: inout T, _ b: inout T) {
    let temporaryA = a
    a = b
    b = temporaryA
}
 
var numb1 = 100
var numb2 = 200
 
print("交换前数据:  \(numb1) 和 \(numb2)")
 
 
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Owner	w3xue
Created	3 years ago
Modified	3 years ago
Visibility	Public