Chef and Rainbow Array

import java.util.*;
class codechef
{
public static void main(String args[])
{
try{
int T,N,i,j,flag=0,anti=0;
Scanner sc = new Scanner(System.in);
// System.out.println(“enter number of test cases”);
T=sc.nextInt();
//int a[]=new int[T];
int b[];
String result[]=new String[T];
for(i=0;i<T;i++)
{
//System.out.print(“enter no. of elements present in array”);
N=sc.nextInt();
b=new int[N];
for(j=0;j<N;j++)
{
//System.out.print("enter element ");
b[j]=sc.nextInt();
}
anti=N-1;

                for(j=0;j<N/2;j++)  
                {
                   
                    if(b[j]==b[anti--])
                        flag++;
                    else 
                        break;
                }
                
                if((flag==N/2) && (b[N/2]==7))
                    result[i]="yes";
                else
                    result[i]="no";
          }
            
              for(i=0;i<T;i++)
              System.out.println(result[i]);
            
            }
    catch(Exception e){
        return;
    }
}

}

Q-https://www.codechef.com/problems/RAINBOWA

when i submit,it’s showing wrong answer

Check this test case:

1
13
2 1 3 4 5 6 7 6 5 4 3 1 2

Correct output:
no
Your output:
yes
//