内建容器

var arr1 [5]int
arr2 := [3]int{1,2,3}
arr3 := [...]int{1,2,3,4,5}

fmt.Println(arr1)
fmt.Println(arr2)
fmt.Println(arr3)

var grid [4][5]int
fmt.Println(grid)

for i, v:= range arr3{
		fmt.Println(i,v)
}

for _, v:= range arr3{
		fmt.Println(v)
}