Question

How to swap two numbers in Swift

Answer 1

func swap(_ a: inout Int, _ b: inout Int) {
    let tempA = a
    a = b
    b = tempA
}

var x = 3
var y = 7

swap(&x, &y)

print("x = \(x), y =  \(y)")




/*
run:

x = 7, y =  3

*/

 

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