go指针进行数据交换
package mainimport "fmt"func swap(a, b *int) { t := *a *a = *b *b = t}func swap2(a *int, b *int) { t := *a *a = *b *b = t}func main() { x, y := 10, 20 swap(&x, &y) fmt.Println(x, y) u, v := 101, 202 swap2(&u, &am
