Programming Examples

Java program to delete duplicate elements from an array


Write a Java Program which accept an Array from user and delete all duplicate elements from and print the array.

import java.util.*;
class DeleteDuplicate
{
    public static void main(String arr[])
    {
        Scanner sc=new Scanner(System.in);
        System.out.println("Enter the size of Array : ");
        int size=sc.nextInt();
        int num[]=new int[size];
        System.out.println("Enter "+size+" Elements for Array :");
        for(int i=0;i        {
            num[i]=sc.nextInt();
        }
        for(int i=0;i        {
            for(int j=i+1;j            {
                if(num[i]==num[j])
                {
                    size=size-1;
                    for(int k=j;k                    {
                        num[k]=num[k+1];
                    }
                    j--;
                }
            }
        }
        System.out.println("Array after delete duplicate elements :");
        for(int i=0;i        {
           System.out.println(num[i]+" ");
        }
       
    }
}
Output

Enter the size of Array : 

10

Enter 10 Elements for Array :

2

2

3

3

4

4

3

4

5

2

Array after delete duplicate elements :

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