Help me in solving LARGESECOND problem

help
,
1

My issue

not able to slolve

My code

/* package codechef; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		
	}
}

Learning course: Arrays using Java
Problem Link: Practice Problem in - CodeChef

2

@aparmit
plzz refer the following solution for better understanding of the logic and implementation

/* package codechef; // don't place package name! */

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

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
		Scanner scanner = new Scanner(System.in);
		int t = scanner.nextInt();
		int N, max, min, sax;
		int[] n;
		
		for(int i= 0; i < t; i++){
		   N = scanner.nextInt();
		   
		   n = new int[N];
		   for(int j = 0; j < N; j++){
		       n[j] = scanner.nextInt();
		   }
		   
		   max = n[0];
		       for(int k = 0; k < N; k++){
		           if(n[k] > max){
		               max = n[k];
		           }
		       }
		       
		       min = n[0];
		       for(int l = 0; l < N; l++){
		           if(n[l] < min){
		               min = n[l];
		           }
		       }
		       
		       sax = min;
		       for(int m = 0; m < N; m++){
		           if(n[m] > sax  && n[m] != max){
		               sax = n[m];
		           }
		       }
		       
		       System.out.println(max + sax);    
		   
		}
	}
}