Question

solve in java using Eclipse

Question 6 Given a student information: Name, Surname, Quiz grade, Homework grade, Project grade, Midterm grade and Final exam grade, Show students whose average is grater then or equal to class average in ascending order. Student average is calculated using this formula: 153 of quiz +158 of homework + 20% of project + 25% of midterm + 25% of final exam. Input specification: In the first line you will be given a number of students n (1<<n<=250). Then in following n lines you will be given: Student name, surname, quiz grade, homework grade, project grade, midterm grade and Final exam grade. Output specification: Show name, surname, and average (with two digits after the floating point) of the students whose average is grater than or equal to the class average in any order. Sample Input I Sample Output I 10 Pauline Pierce 65.75 Skender Davidson 63 66 43 51 Ylber Dervishll 90 166.15 Pauline Pierce 15 80 85 70 68 Renato Haskurti Ylber Dervishll 18_80_91 63 70 168.15 Megan Godolja 50_84_9561 62 Eugerta Hasa 69.35 Renato Haskurti 86 60 65 65 68 Megan Godolja 69.85 Eugerta Hasa 52_90_84 35 90 Arlind Harper 95 25 35 83 68 Fjorentina Rrapaj 49 27 68 87 60 Erion Sinka 3 9 13 98 91 Gentjana Myers 73 21 35 99 62 Sample Input I Explanation Average of students: Skender Davidson 63.20 Pauline Pierce 65.75 Ylber Dervishil 66.15 Megan Godolja 69.85 Renato Haskurti 68.15 Eugerta Hasa 69.35 Arlind Harper 62.90 Fjorentina Rrapaj 61.75 Erion Sinka 51.65 Gentjana Myers 61.35

Answer 1

Answer:

I have written the Java code based on your requirements.

I have used BinarySearchTree to get the results that You want.

The code is working perfectly and it has no-error.

I also attached the output screen-shot that I got by running the below program.

Output:

C:Users\Public>javac test.java C:\Users\Public>java test 2 John Michael 1 2 3 4 5 Peter Michael 2 2 2 2 2 Class Average Mark : 2.525 Marks which are greater tha or equal to 2.525 is below: John Michael 3.05 C:\Users\Public>

Code:

test.java :

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

class BST
{
   class Node
   {
       String first_name,sur_name;
       double average;
       Node left,right;
      
       public Node(String first_name,String sur_name,double average)
       {
           this.first_name=first_name;
           this.sur_name=sur_name;
           this.average=average;
           left=right=null;
       }
   }
  
   Node root;
  
   BST()
   {
       root=null;
   }
  
   void insert(String first_name,String sur_name,double average)
   {
       root=insert_data(root,first_name,sur_name,average);
   }
  
   Node insert_data(Node root,String first_name,String sur_name,double average)
   {
       if(root==null)
       {
           root=new Node(first_name,sur_name,average);
           return root;
       }
      
       if(average < root.average)
       {
           root.left=insert_data(root.left,first_name,sur_name,average);
       }
       else if(average >= root.average)
       {
           root.right=insert_data(root.right,first_name,sur_name,average);
       }
       return root;
   }
  
   void print(double class_average)
   {
       print_function(root,class_average);
   }
  
   void print_function(Node root,double class_average)
   {
       if(root!=null)
       {
           print_function(root.left,class_average);
           if(root.average>=class_average)
           {
               System.out.println("\n");
               System.out.println(root.first_name+" "+root.sur_name+" "+root.average+" ");
              
           }
           print_function(root.right,class_average);
       }
   }
}

public class test
{
   public static void main(String[] args)
   {
   Scanner sc=new Scanner(System.in);  
      
       BST tree=new BST();
      
       int n=sc.nextInt();
      
       sc.nextLine();
      
       int count=n;
       double sum=0;
      
       while(n>0)
       {
          
           String s=sc.nextLine();
           String[] arr=s.split(" ");
          
           double quize=Double.parseDouble(arr[2]);
           double homework=Double.parseDouble(arr[3]);
           double project=Double.parseDouble(arr[4]);
           double midterm=Double.parseDouble(arr[5]);
           double final_exam=Double.parseDouble(arr[5]);
          
           double average=(double)((0.15*quize)+(0.15*homework)+(0.20*project)+(0.25*midterm)+(0.25*final_exam));
          
           tree.insert(arr[0],arr[1],average);
          
           sum=sum+average;
          
          
           System.out.println(" ");
           n--;
          
       }
      
       double class_average=(double)(sum/count);
      
       System.out.println("\n\nClass Average Mark : "+class_average);
       System.out.println("\n\nMarks which are greater tha or equal to "+class_average+" is below:");
      
       tree.print(class_average);
      
   }
}