50 lines
666 B
Go
50 lines
666 B
Go
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package main
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import "fmt"
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func swap(x, y *int) {
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*x, *y = *y, *x
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/*
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tmp := *x
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*x = *y
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*y = tmp
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*/
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}
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func rotate(ptrs ...*int) {
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if len(ptrs) == 0 {
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return
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}
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tmp := *ptrs[0]
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for i := 1; i < len(ptrs); i++ {
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*ptrs[i-1] = *ptrs[i]
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}
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*ptrs[len(ptrs)-1] = tmp
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}
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func main() {
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x := 1
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y := 2
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swap(&x, &y)
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fmt.Println("x =", x)
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fmt.Println("y =", y)
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a := 1
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b := 2
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c := 3
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rotate(&a, &b, &c)
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fmt.Println("a =", a)
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fmt.Println("b =", b)
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fmt.Println("c =", c)
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rotate(&a, &b, &c)
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fmt.Println("a =", a)
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fmt.Println("b =", b)
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fmt.Println("c =", c)
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rotate(&a, &b, &c)
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fmt.Println("a =", a)
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fmt.Println("b =", b)
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fmt.Println("c =", c)
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}
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