How to Sort an Array in Kotlin - Step by Step Examples

How to Sort an Array in Kotlin ?

Answer

To sort an array in Kotlin, you can use the sortedArray() function for ascending order and sortedArrayDescending() function for descending order.


✐ Examples

1 Sort Integer Array in Ascending Order

In this example,

  1. We create an integer array named numbers with values 5, 2, 8, 1, 6.
  2. We use the sortedArray() function on the array to sort it in ascending order and store the sorted array in sortedNumbers variable.
  3. The sortedArray() function sorts the array elements in ascending order.
  4. Finally, we print the sorted array sortedNumbers to standard output.

Kotlin Program

fun main() {
    val numbers = intArrayOf(5, 2, 8, 1, 6)
    val sortedNumbers = numbers.sortedArray()
    println("Sorted array in ascending order: ${sortedNumbers.contentToString()}")
}

Output

Sorted array in ascending order: [1, 2, 5, 6, 8]

2 Sort Integer Array in Descending Order

In this example,

  1. We create an integer array named numbers with values 5, 2, 8, 1, 6.
  2. We use the sortedArrayDescending() function on the array to sort it in descending order and store the sorted array in sortedNumbers variable.
  3. The sortedArrayDescending() function sorts the array elements in descending order.
  4. Finally, we print the sorted array sortedNumbers to standard output.

Kotlin Program

fun main() {
    val numbers = intArrayOf(5, 2, 8, 1, 6)
    val sortedNumbers = numbers.sortedArrayDescending()
    println("Sorted array in descending order: ${sortedNumbers.contentToString()}")
}

Output

Sorted array in descending order: [8, 6, 5, 2, 1]

Summary

In this tutorial, we learned How to Sort an Array in Kotlin language with well detailed examples.


More Kotlin Arrays Tutorials

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