package main

import "fmt"

func main() {

	a := "A"
	b := "B"
	fmt.Println(a, b) // "A" "B"
	Swap(&a, &b) // the swap function is implemented
	fmt.Println(a, b) // "B" "A"

}

func Swap(x, y *string) { // x and y pointers to *string

	*x, *y = *y, *x // swap,

}