Help me in solving AVGPERM problem

help
,
1

My issue

what if N == 3

My code

import java.util.*;
import java.lang.*;
import java.io.*;

class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner read = new Scanner(System.in);
		int T = read.nextInt();
		
		while(T --> 0){
		    int N = read.nextInt();
		     
		     if(N==3){
		         System.out.println();
		     }
		 
		 else{
		   
		         System.out.print(N + "" + (N-2));
		         for(int i=1 ; i<=N-4 ; i++){
		             System.out.print(i + "");
		         }
		          System.out.print((N-1) + "" + (N-3) + "\n");
		 }
		}

	}
}

Learning course: 1400 to 1600 difficulty problems
Problem Link: Average Permutation Practice Problem in - CodeChef