Scala Programming: Remove duplicate elements from an array of integers

Scala Programming Array Exercise-18 with Solution

Write a Scala program to remove duplicate elements from an array of integers.

Sample Solution:

Scala Code:

object Scala_Array {   
   def main(args: Array[String]): Unit = {     
     var my_array = Array(0, 0, 3, -2, -2, 4, 3, 2, 4, 6, 7)    
     //Call the following java class for array operation     
     import java.util.Arrays; 
     println("Original Array1 : "+Arrays.toString(my_array));     
     var no_unique_elements = my_array.length;         
     //Comparing each element with all other elements         
       var i=0;
       var j=0;
      // var j=0;
       for (l <- 0 to no_unique_elements-1) 
        {          
          j=i+1
        //  println(i + "  "+j)
          for (x <- i+1 to no_unique_elements-1)
            {
                //If any two elements are found equal                 
                if (my_array(i) == my_array(j))
                {
                    //Replace duplicate element with last unique element                     
                    my_array(j) = my_array(no_unique_elements-1);
                     no_unique_elements = no_unique_elements-1;                     
                   j=j-1      
                }    
              j=j+1
             }
           i=i+1
        }  
     //Copying only unique elements of unique_array into array1
     //Use the Java class for array operation         
       var unique_array = Arrays.copyOf(my_array, no_unique_elements);                
       println("New array without duplicates: "+Arrays.toString(unique_array));
   }
 }

Sample Output:

Original Array1 : [0, 0, 3, -2, -2, 4, 3, 2, 4, 6, 7]
New array without duplicates: [0, 7, 3, -2, 4, 2, 6]

Scala Code Editor :

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a Scala program to remove duplicate elements from an array of strings.
Next: Write a Scala program to find the second largest element from a given array of integers.