Go Array

In Go, an array is a homogeneous data structure (Fix type) and has a fixed-length. The type can be anything like integers, string or self-defined type.

The items in the array can be accessed through their index, It starts with zero. The number of items in the array is called the length or size of an array. It is fixed and must be declared in the declaration of an array variable.

Syntax:

Example:

Go Array Example

package main
import "fmt"
func main() {
   var x [5]int
   var i, j int
   for i = 0; i < 5; i++ {
      x[i] = i + 10
   }
   for j = 0; j < 5; j++ {
      fmt.Printf("Element[%d] = %d\n", j, x[j])
   }
}

Output:

Element[0] = 10
Element[1] = 11
Element[2] = 12
Element[3] = 13
Element[4] = 14

Go Multi Dimensional Arrays

Multi dimensional arrays is simply a list of one-dimensional arrays.

Sytax:

Example:

Initializing Two-Dimensional Arrays

a = [2][3]int{  
   {2, 4, 6} ,   /*  initializers for row indexed by 0 */
   {8, 10, 12} ,   /*  initializers for row indexed by 1 */
}

Accessing Two-Dimensional Arrays

Go Multi-Dimensional Array Example

package main
import "fmt"
func main() {
   /* an array with 3 rows and 3 columns*/
   var a = [3][3]int{ {1,2,3}, {4,5,6}, {7,8,9}}
   var i, j int
   /* output each array element's value */
   for  i = 0; i < 3; i++ {
      for j = 0; j < 3; j++ {
         fmt.Print(a[i][j] )
      }
      fmt.Println()
   }
}

Output: