ABC123

合并多个数组：

package main
import "fmt"

func main() {
    var arr1 = []int{1,2,3}
    var arr2 = []int{4,5,6}
    var arr3 = []int{7,8,9}
    var s1 = append(append(arr1, arr2...), arr3...)
    fmt.Printf("s1: %v\n", s1)
}

输出结果：

s1: [1 2 3 4 5 6 7 8 9]