From e83c1136df57f65aad5d9f73b246a2cf99f1e976 Mon Sep 17 00:00:00 2001
From: Vineeth Yelagandula <111960524+Yelagandula@users.noreply.github.com>
Date: Sun, 9 Mar 2025 03:03:00 -0400
Subject: [PATCH] Update StudentGradeCalculator.java
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Reduced from O(n) → O(1)
 no longer store names or grades in lists, just a few scalar variables.
---
 .../StudentGradeCalculator.java               | 27 ++++++-------------
 1 file changed, 8 insertions(+), 19 deletions(-)

diff --git a/Student Grade Calculator/StudentGradeCalculator.java b/Student Grade Calculator/StudentGradeCalculator.java
index 2bcb0f4..aeb6426 100644
--- a/Student Grade Calculator/StudentGradeCalculator.java	
+++ b/Student Grade Calculator/StudentGradeCalculator.java	
@@ -2,43 +2,32 @@
 import java.util.List;
 import java.util.Scanner;
 
+import java.util.Scanner;
+
 public class StudentGradeCalculator {
 
-    public static void RunStudentGradeCalculator(String[] args) {
+    public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
 
         System.out.print("Enter the number of students: ");
         int numberOfStudents = scanner.nextInt();
 
-        List<String> studentNames = new ArrayList<>();
-        List<Double> studentGrades = new ArrayList<>();
+        double sum = 0.0;
 
+        System.out.println("\nStudent Grade Report:");
         for (int i = 0; i < numberOfStudents; i++) {
             System.out.print("Enter the name of student " + (i + 1) + ": ");
             String name = scanner.next();
-            studentNames.add(name);
 
             System.out.print("Enter the grade of student " + (i + 1) + ": ");
             double grade = scanner.nextDouble();
-            studentGrades.add(grade);
-        }
 
-        double average = calculateAverage(studentGrades);
+            sum += grade; // Maintain a running sum
 
-        System.out.println("\nStudent Grade Report:");
-        for (int i = 0; i < numberOfStudents; i++) {
-            System.out.println(studentNames.get(i) + ": " + studentGrades.get(i));
+            System.out.println(name + ": " + grade);
         }
 
+        double average = (numberOfStudents > 0) ? (sum / numberOfStudents) : 0.0;
         System.out.println("\nAverage Grade: " + average);
     }
-
-    private static double calculateAverage(List<Double> grades) {
-        double sum = 0.0;
-        for (Double grade : grades) {
-            sum += grade;
-        }
-        return sum / grades.size();
-    }
 }
-