import java.util.ArrayList;

import java.util.Collections;

//A simple Java program to analyze the grdes in class room using the ArrayList funtions in Java, it calculates the Average, and min and max scores...

public class GradeAnalyzer{

public GradeAnalyzer(){

}

public int getAverage(ArrayList <Integer> grades) {

if (grades.size() < 1 ){

System.out.println("The ArrayList is Empty!");

return 0;

}

else{

int sum = 0;

for(Integer grade : grades ){

sum += grade;

}

int average = sum/grades.size();

System.out.println(average);

return average;

}

}

public int getHighestGrade(ArrayList <Integer> grades) {

if (grades.size() < 1 ){

System.out.println("The ArrayList is Empty!");

return 0;

}

else{

int maxGrade = 0;

for(Integer grade : grades ){

maxGrade = Collections.max(grades);

}

System.out.println(maxGrade);

return maxGrade;

}

}

public int getLowestGrade(ArrayList <Integer> grades) {

if (grades.size() < 1 ){

System.out.println("The ArrayList is Empty!");

return 0;

}

else{

int lowGrade = 0;

for(Integer grade : grades ){

lowGrade = Collections.min(grades);

}

System.out.println(lowGrade);

return lowGrade;

}

}

public static void main(String[] args){

ArrayList <Integer> myClassRoom = new ArrayList <Integer>();

myClassRoom.add(98);

myClassRoom.add(92);

myClassRoom.add(88);

myClassRoom.add(75);

myClassRoom.add(61);

myClassRoom.add(89);

myClassRoom.add(95);

GradeAnalyzer myAnalyzer = new GradeAnalyzer();

myAnalyzer.getAverage(myClassRoom);

myAnalyzer.getHighestGrade(myClassRoom);

myAnalyzer.getLowestGrade(myClassRoom);

}

}