feat: lab02 practice

Author: juntae6942

memory/repository/computer_programming_2/src/lab02/shoolGrade/ClassRoom.java

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+package lab02.shoolGrade;
+
+class ClassRoom {
+
+	private Student[] students;
+
+	ClassRoom(Student[] students) {
+		this.students = students;
+	}
+
+	void printAllStudents() {
+		System.out.println("=== 전체 학생 정보 ===");
+		for (Student s : students) {
+			s.printInfo();
+		}
+	}
+
+	double getAverage() {
+		int sum = 0;
+		for (Student s : students) {
+			sum += s.getScore();
+		}
+		return (double) sum / students.length;
+	}
+
+	Student getTopStudent() {
+		Student top = students[0];
+		for (Student s : students) {
+			if (s.getScore() > top.getScore()) {
+				top = s;
+			}
+		}
+		return top;
+	}
+
+	Student getLowestStudent() {
+		Student low = students[0];
+		for (Student s : students) {
+			if (s.getScore() < low.getScore()) {
+				low = s;
+			}
+		}
+		return low;
+	}
+
+	void printPassStudents() {
+		System.out.println("=== 합격자 명단 ===");
+		for (Student s : students) {
+			if (s.isPass()) {
+				System.out.println(s.getName() + " (점수: " + s.getScore() + ")");
+			}
+		}
+	}
+}

memory/repository/computer_programming_2/src/lab02/shoolGrade/Student.java

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+package lab02.shoolGrade;
+
+class Student {
+	private String name;
+	private int score;
+	private String grade;
+
+	public Student(String name, int score) {
+		this.name = name;
+		this.score = score;
+		this.grade = calculateGrade(score);
+	}
+
+	private String calculateGrade(int score) {
+		if (score >= 90) {
+			return "A";
+		} else if (score >= 80) {
+			return "B";
+		} else if (score >= 70) {
+			return "C";
+		} else if (score >= 60) {
+			return "D";
+		} else {
+			return "F";
+		}
+	}
+
+	public void printInfo() {
+		System.out.println(name + " - 점수: " + score + ", 학점: " + grade);
+	}
+
+	public boolean isPass() {
+		return score >= 60;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public int getScore() {
+		return score;
+	}
+}

memory/repository/computer_programming_2/src/lab02/shoolGrade/StudentMain.java

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+package lab02.shoolGrade;
+
+public class StudentMain {
+    public static void main(String[] args) {
+        Student[] students = {
+            new Student("철수", 95),
+            new Student("영희", 82),
+            new Student("민수", 67),
+            new Student("지현", 58),
+            new Student("호준", 74)
+        };
+
+        ClassRoom classRoom = new ClassRoom(students);
+
+        classRoom.printAllStudents();
+        System.out.println("평균 점수: " + classRoom.getAverage());
+
+        Student top = classRoom.getTopStudent();
+        System.out.println("최고 점수 학생: " + top.getName() + " (" + top.getScore() + "점)");
+
+        Student low = classRoom.getLowestStudent();
+        System.out.println("최저 점수 학생: " + low.getName() + " (" + low.getScore() + "점)");
+
+        classRoom.printPassStudents();
+    }
+}