Question

Java Program to remove duplicate element in an Array

Answer 1

⚫ Java Program to remove duplicate element in an Array. ⚫







public


class



MyDuplicateElements




{     



public

static int[]






removeDuplicates(int[]



input)



{              



   int j = 0;       



 int i = 1;      



  //return if the array length is less than 2        if(input.length < 2)





{      




      return input;       


 }



        while(i < input.length)




{       



     if(input[i] == input[j]){                i++;        



    }




else



{             



   input[++j] = input[i++];        



    }        



    }    




    int[] output = new int[






j+1];        for(int k=0; k<output.length; k++






){            output[k] =





input[k];     





   }                 return output;    }      





   public static void main(String a[]){   







     int[] input1 = {2,3,6,6,8,9,10,10,10,12,12};    







    int[] output = removeDuplicates(input1);     








   for(int i:output){          




  System.out.print(i+" ");        }  





  }





}






⚫⚫⚫Output ⚫⚫⚫




✅✅✅✅. 2 3 6 8 9 10 12 ✅✅✅✅

Answer 2

Answer:

import java.util.*;

public class Main

{

public static void main(String[] args) {

    int[] arr = {5,7,4,1,2,6,9,8,4,5,2,2,5};

 LinkedHashSet<Integer> set = new LinkedHashSet<>();

 System.out.println("---ARRAY BEFORE REMOVING DUPLICATE ELEMENTS---");

     for (int i : arr){

         System.out.print(i + " ");

         set.add(i);

     }

 System.out.println("\n---ARRAY AFTER REMOVING DUPLICATE ELEMENTS---");    

     for(int i : set){

         System.out.print(i + " ");

     }

}

}

Explanation: