Question

How to use two dimensional (2D) slice in Go

Answer 1

package main

import "fmt"

func main() {
    slice := [][]int{}

    row1 := []int{1, 2, 3, 4}
    row2 := []int{34, 65, 1, 8}
    
    slice = append(slice, row1)
    slice = append(slice, row2)

    fmt.Println(slice[0])
    fmt.Println(slice[1])

    fmt.Println(slice[0][0])
    fmt.Println(slice[1][0])
}
  
  
  
/*
run:
  
[1 2 3 4]
[34 65 1 8]
1
34
  
*/

 

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Answer 2

package main
 
import "fmt"
 
func main() {
    slice := [][]int{}
 
    row1 := []int{1, 2, 3, 4}
    row2 := []int{34, 65, 1, 8}
     
    slice = append(slice, row1)
    slice = append(slice, row2)
 
    for i := range slice {
        fmt.Println(slice[i])
    }
    
    fmt.Println("\n")
    
    for i := range slice {
        for j := range slice[i] {
            fmt.Println(slice[i][j])
        }
    }
}
 
   
   
   
/*
run:
   
[1 2 3 4]
[34 65 1 8]


1
2
3
4
34
65
1
8
   
*/

 

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