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How to create a Two Dimensional Array in Go

How to create a Two Dimensional Array in Go ?

Answer

To create a Two Dimensional Array in Go, you can use slices of slices.


✐ Examples

1 Creating a 2D Array of Integers

In this example,

  1. We initialize a 2D slice named matrix with dimensions 3x3.
  2. We assign values to the elements of the slice.
  3. The outer loop iterates over rows, and the inner loop iterates over columns to fill the slice.

Go Program

package main
import (
    "fmt"
)
func main() {
    matrix := make([][]int, 3)
    for i := range matrix {
        matrix[i] = make([]int, 3)
        for j := range matrix[i] {
            matrix[i][j] = i + j
        }
    }
    fmt.Println(matrix)
}

Output

[[0 1 2] [1 2 3] [2 3 4]]

2 Creating a 2D Array of Strings

In this example,

  1. We initialize a 2D slice named matrix with dimensions 2x2.
  2. We assign values to the elements of the slice.
  3. The outer loop iterates over rows, and the inner loop iterates over columns to fill the slice.

Go Program

package main
import (
    "fmt"
)
func main() {
    matrix := make([][]string, 2)
    for i := range matrix {
        matrix[i] = make([]string, 2)
        for j := range matrix[i] {
            matrix[i][j] = fmt.Sprintf("Row %d, Column %d", i+1, j+1)
        }
    }
    fmt.Println(matrix)
}

Output

[[Row 1, Column 1 Row 1, Column 2] [Row 2, Column 1 Row 2, Column 2]]

Summary

In this tutorial, we learned How to create a Two Dimensional Array in Go language with well detailed examples.


More Go Arrays Tutorials

  1. How to Declare an Array in Go ?
  2. How to Initialize an Array in Go ?
  3. How to Access Array Elements in Go ?
  4. How to Access Array Elements using Index in Go ?
  5. How to get First Element in Array in Go ?
  6. How to get Last Element in Array in Go ?
  7. How to check if an Array is Empty in Go ?
  8. How to check if an Array is Not Empty in Go ?
  9. How to get Sub Array in Go ?
  10. How to Get Array Length in Go ?
  11. How to Iterate Over an Array in Go ?
  12. How to Iterate Over an Array in Reverse Order in Go ?
  13. How to get the Index of Specified Element in an Array in Go ?
  14. How to check if Specified Element is present in the Array in Go ?
  15. How to count the Number of Occurrences of Specified Element in the Array in Go ?
  16. How to Sort an Array in Go ?
  17. How to Sort an Array in Ascending Order in Go ?
  18. How to Sort an Array in Descending Order in Go ?
  19. How to create a Two Dimensional Array in Go ?
  20. How to Iterate over a Two Dimensional Array in Go ?
  21. How to create a Three Dimensional Array in Go ?
  22. How to Copy an Array in Go ?
  23. How to Split an Array in Go ?
  24. How to Join Arrays in Go ?
  25. How to check if Two Arrays are Equal in Go ?
  26. How to check if Two Arrays have Same Elements (Regardless of Order) in Go ?
  27. How to Convert an Array of Integers to an Array of Strings in Go ?
  28. How to Convert an Array of Strings to an Array of Integers in Go ?
  29. How to Reverse an Array in Go ?
  30. How to Shuffle an Array in Go ?
  31. How to Rotate Elements in an Array in Go ?
  32. How to Filter Elements of an Array based on a Condition in Go ?
  33. How to Declare an Integer Array in Go ?
  34. How to Declare a Float Array in Go ?
  35. How to Declare a String Array in Go ?
  36. How to Remove Duplicates in an Array in Go ?
  37. How to Remove Specific Element from an Array in Go ?
  38. How to Remove Element from Array based on a Condition in Go ?
  39. How to Sort a String Array in Dictionary Order in Go ?
  40. How to Concatenate Strings in Array in Go ?