Finished lab

src/main/java/io/zipcoder/Classroom.java

@@ -1,4 +1,97 @@
 package io.zipcoder;
 
-public class Classroom {
+import java.util.*;
+
+public class Classroom{
+    private Student[] studentsInClass;
+
+    public Classroom(int numberOfStudents) {
+        studentsInClass = new Student[numberOfStudents];
+    }
+    public Classroom(Student[] students){
+        this.studentsInClass = new Student[students.length];
+        System.arraycopy(students, 0, studentsInClass, 0, students.length);
+
+//        for (int i = 0; i < students.length; i++) {
+//            studentsInClass[i] = students[i];
+//        }
+    }
+    public Classroom(){
+        this.studentsInClass = new Student[30];
+    }
+
+    public Student[] getStudents() {
+        return studentsInClass;
+    }
+
+
+    public Double getClassAverageExamScore() {
+        Double average = 0.0;
+        for (Student student: studentsInClass) {
+            average += student.getAverageExamScore();
+        }
+        return average/studentsInClass.length;
+    }
+
+    public void addStudent(Student student) {
+        ArrayList<Student> addingStudents = new ArrayList<>(Arrays.asList(studentsInClass));
+        addingStudents.add(student);
+        this.studentsInClass = addingStudents.toArray(new Student[0]);
+    }
+
+    public void removeStudent(String firstName, String lastName) {
+        ArrayList<Student> removingStudent = new ArrayList<>(Arrays.asList(studentsInClass));
+        for (Student student:removingStudent) {
+            if(student.getFirstName().equals(firstName) && student.getLastName().equals(lastName)){
+                removingStudent.remove(student);
+                removingStudent.add(null);
+                break;
+            }
+        }
+        this.studentsInClass = removingStudent.toArray(new Student[0]);
+    }
+
+
+    public void getStudentByScore() {
+        //Arrays.sort(studentsInClass);
+
+        List<Student> sortMe = Arrays.asList(studentsInClass);
+        Comparator<Student> byScore = Comparator.comparing(Student :: getAverageExamScore);
+        Comparator<Student> byLastName = Comparator.comparing(Student :: getLastName);
+        Comparator<Student> byFirstName = Comparator.comparing(Student :: getFirstName);
+
+        Collections.sort(sortMe, byScore.thenComparing(byLastName).thenComparing(byFirstName));
+        Collections.reverse(sortMe);
+        this.studentsInClass = sortMe.toArray(new Student[0]);
+    }
+
+    public void getGradedBook(){
+
+        //Assign letter grades to students
+        double result = 0.0;
+        double standardDevi = 0.0;
+        for (Student eachStudent : studentsInClass) {
+
+            Double classAvg = getClassAverageExamScore();
+            Double studentAvg = eachStudent.getAverageExamScore();
+
+            Integer numOfStudents = studentsInClass.length;
+
+            result += Math.pow(studentAvg - classAvg, 2);
+
+            standardDevi = Math.sqrt(result/(numOfStudents - 1));
+
+            if (studentAvg >= (classAvg + (standardDevi * 2))) {
+                eachStudent.setLetterGrade("A");
+            } else if (studentAvg >= (classAvg + (standardDevi))){
+                eachStudent.setLetterGrade("B");
+            } else if (studentAvg < (classAvg + standardDevi) && studentAvg > classAvg){
+                eachStudent.setLetterGrade("C");
+            } else if (studentAvg <= (classAvg - standardDevi)) {
+                eachStudent.setLetterGrade("D");
+            } else if (studentAvg <= (classAvg - (standardDevi * 2))) {
+                eachStudent.setLetterGrade("F"); }
+        }
+
+    }
 }

src/main/java/io/zipcoder/Student.java

@@ -1,4 +1,95 @@
 package io.zipcoder;
 
-public class Student {
+import java.util.ArrayList;
+import java.util.Collections;
+
+public class Student implements Comparable<Student> {
+    private String firstName;
+    private String lastName;
+    private ArrayList<Double> examScores = new ArrayList<>();
+    String letterGrade;
+
+
+    public Student(String firstName, String lastName, Double[] testScores, String letterGrade) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+        Collections.addAll(this.examScores, testScores);
+        this.letterGrade = letterGrade;
+    }
+    public String getLetterGrade() {
+        return this.letterGrade;
+    }
+
+    public void setLetterGrade(String letterGrade) {
+        this.letterGrade = letterGrade;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public int getNumberOfExamsTaken(){
+        return examScores.size();
+    }
+
+    public String getExamScores() {
+        int index = 1;
+        String result = "Exam Scores:\n";
+        for (Double score: examScores) {
+            result += "Exam " + index + " -> " +score + "\n";
+            index++;
+        }
+        return result;
+    }
+
+    public void addExamScore(double newScore) {
+        examScores.add(newScore);
+    }
+
+    public void setExamScore(int index, double newScore) {
+        examScores.set(index - 1, newScore);
+    }
+
+    public Double getAverageExamScore() {
+        Double allExamScore = 0.0;
+        for (Double score: examScores) {
+            allExamScore += score;
+        }
+        return allExamScore/examScores.size();
+    }
+
+    /**
+     * Student Name: Leon Hunter
+     * 		> Average Score: 125
+     * 		> Exam Scores:
+     * 		    Exam 1 -> 100
+     * 		    Exam 2 -> 150
+     * 		    Exam 3 -> 250
+     * 		    Exam 4 -> 0
+     */
+
+    @Override
+    public String toString(){
+        String result = "Student Name: " + firstName + " " + lastName + "\n" +
+                "Average Score: " + getAverageExamScore() + "\n" + getExamScores() +
+                "Letter Grade:" + getLetterGrade() + "\n";
+        return result;
+    }
+
+    @Override
+    public int compareTo(Student student) {
+        return (int) (this.getAverageExamScore() - student.getAverageExamScore());
+    }
 }

src/main/java/io/zipcoder/StudentSorter.java

@@ -0,0 +1,7 @@
+package io.zipcoder;
+
+public class StudentSorter {
+    public Student[] sort(Student[] studentArray){
+        return null;
+    }
+}