Tested in Repl but wont pass

Question about the task

Resolved

What is wrong with my code... It works :\ EDIT: Resolved on my own. Apparently we're living in an alternate universe where indices aren't 0 based.

import java.io.*;

public class Solution {
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        int num1 = Integer.parseInt(reader.readLine());
        int num2 = Integer.parseInt(reader.readLine());
        int num3 = Integer.parseInt(reader.readLine());

        int arr[] = new int[3];
        arr[0] = num1;
        arr[1] = num2;
        arr[2] = num3;

         if(arr[0] == arr[1] && arr[0] != arr[2]){
                System.out.print(2);
         }else if(arr[0] == arr[2] && arr[0] != arr[1]){
                System.out.print(1);
         }else if(arr[1] == arr[2] && arr[0] != arr[2]){
                System.out.print(0);
         }
    }
}

Use the keyboard to enter three integers. One of the numbers is unique. The other two are identical. Display the ordinal number of the number that is different from the others.

Example for 4 6 6:
1

Example for 6 6 3:
3

Requirements:

The program should read the numbers from the keyboard.
The program should use System.out.println() or System.out.print().
The program should display the ordinal number of the number that is different from the others.
If all the numbers are different, don't display anything.

package com.codegym.task.task04.task0424; /* Three numbers */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int num1 = Integer.parseInt(reader.readLine()); int num2 = Integer.parseInt(reader.readLine()); int num3 = Integer.parseInt(reader.readLine()); int arr[] = new int[3]; arr[0] = num1; arr[1] = num2; arr[2] = num3; if(arr[0] == arr[1] && arr[0] != arr[2]){ System.out.print(2); }else if(arr[0] == arr[2] && arr[0] != arr[1]){ System.out.print(1); }else if(arr[1] == arr[2] && arr[0] != arr[2]){ System.out.print(0); } } }