Question

How to remove duplicates from an array in Kotlin

Answer 1

fun main() {
    val array = arrayOf(1, 3, 4, 3, 3, 4, 1, 1, 5, 5, 6, 7, 8, 8, 8, 8, 9)
    
    val uniqueArray = array.toSet().toTypedArray()
    
    println(uniqueArray.joinToString(", "))
}

  
  
   
/*
run:
 
1, 3, 4, 5, 6, 7, 8, 9
 
*/

 

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Answer 2

fun main() {
    var array = arrayOf(1, 3, 4, 3, 3, 4, 1, 1, 5, 5, 6, 7, 8, 8, 8, 8, 9)
    
    array = array.toSet().toTypedArray()
    
    println(array.joinToString(", "))
}

  
  
   
/*
run:
 
1, 3, 4, 5, 6, 7, 8, 9
 
*/

 

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