How to create a Three Dimensional List in Kotlin - Step by Step Examples

How to create a Three Dimensional List in Kotlin ?

Answer

To create a three-dimensional list in Kotlin, you can use nested lists where each inner list represents a 2D plane within the 3D space.


✐ Examples

1 Create a 3D List of Integers

In this example,

  1. We initialize a 3D list using List>>, where each innermost list represents a row in the 2D plane.
  2. We use nested for loops to populate the 3D list with integers or perform operations on each element.

Kotlin Program

fun main() {
    val matrix3D = List(3) {
        List(3) {
            MutableList(3) { 0 }
        }
    }

    for (i in matrix3D.indices) {
        for (j in matrix3D[i].indices) {
            for (k in matrix3D[i][j].indices) {
                matrix3D[i][j][k] = i + j + k
            }
        }
    }

    println(matrix3D)
}

Output

[[[0, 1, 2], [1, 2, 3], [2, 3, 4]], [[1, 2, 3], [2, 3, 4], [3, 4, 5]], [[2, 3, 4], [3, 4, 5], [4, 5, 6]]]

2 Create a 3D List of Strings

In this example,

  1. We initialize a 3D list using List>>, where each innermost list represents a row in the 2D plane of strings.
  2. We use nested for loops to populate the 3D list with strings or perform operations on each element.

Kotlin Program

fun main() {
    val matrix3D = List(2) {
        List(2) {
            MutableList(2) { "" }
        }
    }

    for (i in matrix3D.indices) {
        for (j in matrix3D[i].indices) {
            for (k in matrix3D[i][j].indices) {
                matrix3D[i][j][k] = "($i, $j, $k)"
            }
        }
    }

    println(matrix3D)
}

Output

[[[(0, 0, 0), (0, 0, 1)], [(0, 1, 0), (0, 1, 1)]], [[(1, 0, 0), (1, 0, 1)], [(1, 1, 0), (1, 1, 1)]]]

Summary

In this tutorial, we learned How to create a Three Dimensional List in Kotlin language with well detailed examples.


More Kotlin Lists Tutorials

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  2. How to Initialize a List in Kotlin ?
  3. How to Get Length of a List in Kotlin ?
  4. How to create a List of size N in Kotlin ?
  5. How to create a List of Numbers from 1 to N in Kotlin ?
  6. How to create a List of Strings in Kotlin ?
  7. How to create a List of Empty Lists in Kotlin ?
  8. How to Access Elements in a List in Kotlin ?
  9. How to get Element in a List at a Specific Index in Kotlin ?
  10. How to get First Element in a List in Kotlin ?
  11. How to get Last Element in a List in Kotlin ?
  12. How to Iterate Over a List in Kotlin ?
  13. How to Iterate Over a List with Index in Kotlin ?
  14. How to Iterate Over a List in Reverse Order in Kotlin ?
  15. How to check if a List is Empty in Kotlin ?
  16. How to check if a List is Not Empty in Kotlin ?
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  18. How to get the Index of Specified Element in a List in Kotlin ?
  19. How to check if a Specific Element is present in the List in Kotlin ?
  20. How to check if a List contains all the elements of Another List in Kotlin ?
  21. How to count the Number of Occurrences of Specific Element in the List in Kotlin ?
  22. How to find the Element with Maximum Number of Occurrences in a List in Kotlin ?
  23. How to find the Element with Minimum Number of Occurrences in a List in Kotlin ?
  24. How to Sort a List in Kotlin ?
  25. How to Sort a List in Ascending Order in Kotlin ?
  26. How to Sort a List in Descending Order in Kotlin ?
  27. How to create a Two Dimensional List in Kotlin ?
  28. How to Iterate over a Two Dimensional List in Kotlin ?
  29. How to create a Three Dimensional List in Kotlin ?
  30. How to Copy a List in Kotlin ?
  31. How to deep Copy a List in Kotlin ?
  32. How to Split a List in Kotlin ?
  33. How to Join Lists in Kotlin ?
  34. How to Append an Element to a List in Kotlin ?
  35. How to Insert an Element at Specific Index in a List in Kotlin ?
  36. How to Append a List to another List in Kotlin ?
  37. How to Concatenate Two Lists in Kotlin ?
  38. How to check if Two Lists are Equal in Kotlin ?
  39. How to check if Two Lists have Same Elements (Regardless of Order) in Kotlin ?
  40. How to Convert a List of Integers to a List of Strings in Kotlin ?
  41. How to Convert a List of Strings to a List of Integers in Kotlin ?
  42. How to Convert a List of Floats to a List of Strings in Kotlin ?
  43. How to Convert a List of Strings to a List of Floats in Kotlin ?
  44. How to Reverse a List in Kotlin ?
  45. How to Shuffle a List in Kotlin ?
  46. How to Slice a List in Kotlin ?
  47. How to Slice First N Elements from a List in Kotlin ?
  48. How to Slice Last N Elements from a List in Kotlin ?
  49. How to Rotate Elements in a List in Kotlin ?
  50. How to Filter Elements of a List based on a Condition in Kotlin ?
  51. How to Remove Duplicates in a List in Kotlin ?
  52. How to Remove Element at a Specific Index from a List in Kotlin ?
  53. How to Remove Specific Element from a List in Kotlin ?
  54. How to Remove Element from List based on a Condition in Kotlin ?
  55. How to Sort a List of Strings in Dictionary Order in Kotlin ?
  56. How to Concatenate Strings in List in Kotlin ?
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  58. How to create a List of Dictionaries in Kotlin ?
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