# Parameter transfer mode of two-dimensional array in go language

Time：2021-12-3

When implementing the dynamic programming problem with go language, I was a little confused about the parameter change of the two-dimensional array. I checked the data for a while, and then achieved the purpose (in fact, I still want to know whether the slice can be two-dimensional), so record it

## Look at the code~

``````
package main
import "fmt"
//n=7
func matrixChainOrder(p []int,m *[7][7]int,s *[7][7]int,n int){
for i:=0;i<n;i++{
m[i][i] = 0
}
for l:=2;l<n;l++{
for i:=1;i<n-l+1;i++{
j:=i+l-1
m[i][j] = 10000000
for k:=i;k<=j-1;k++{
q:=m[i][k]+m[k+1][j]+p[i-1]*p[k]*p[j]
if q<m[i][j]{
m[i][j] = q
s[i][j] = k
}
}
}
}
// fmt.Println(m[1][6])
}
func main(){
p:=[]int {30,35,15,5,10,20,15}
var  m  [7][7]int
var  s  [7][7]int
matrixChainOrder(p,&m,&s,7)
fmt.Println(m[1][6])
}
``````

Supplement: go array is passed as a function parameter

## Look at the code~

``````
func myfun(a *[]int) {
fmt.Print(a)
//a[0] = 5
(*a)[0] = 5
//fmt.Print("here", a, "\n")
}
func test() {
a1 := 1
b1 := 2
var a []*int = []*int{&a1, &b1}
fmt.Print(a)
}
func main() {
var a []int = []int{1, 2, 3, 4}
myfun(&a)
fmt.Print(a)
test()
}
``````

The above is my personal experience. I hope I can give you a reference, and I hope you can support developpaer. If you have any mistakes or don’t consider completely, please don’t hesitate to comment.

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