program to return true is value appears twice

-

 import java.util.*;


class distinct{

    public static void main(String[] args) {


        int arr[]={2,1,4};

        boolean val=false;

        for(int i=0;i<arr.length;i++){

            for(int j=i+1;j<arr.length;j++){

                if(arr[j]==arr[i]){

                    val=true;

                }
            }
        }
        System.out.println(val);
       
    }

}

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