Помогите пожалуйста с методом сортировки. Я очень сомневаюсь что он верный

private class CSCIStudent {
        private int studentID; private String name;
        private double hoursPerWeekProgramming;
        public CSCIStudent ( String name, int id) {...}
        public int getID() { return studentID; }
        public String getName() { return name; }
        public double getHPWP() { return hoursPerWeekProgramming; }

Write a method called studentSort that takes as it argument a List<CSCIStudent> and uses a simple sort mechanism (you may implement either selection, bubble, or insertion sort). The natural order we want to sort on is the number of hours the CSCIStudent spends programming.
List methods you will need to use:

public class
boolean add (T element); // Appends the element to the end of the list void add(int index, T element); // Inserts the element at index
T get(int index); // return the element at an index
int size(); // returns the number of elements in the list
Provide your implementation on the next page.
// bubble sort

int i = 0;
CSCIStudent temp;
boolean marker = true;
while (marker) {
        marker = false;
        for(i; i <= list.size() - 1; i++){
        if( list.get( i, HPWP) > list.get(i+1, HPWP)) {
                  temp = list.get(i);
                  list.get(i) = list.get (i+1);
                  list.get(i+1) = temp;
                  marker = true;
        }
}
}

public void studentSort(List<CSCIStudent> list) {
            boolean isSorted;
            CSCIStudent temp;
            while (!isSorted) {
                isSorted = true;
                for (int i = 0; i < list.size(); i++) {
                    if (list.get(i - 1) > list.get(i)) {
                        temp = list.get(i);
                        list.get(i) = list.get(i - 1);
                        list.get(i - 1) = temp;
                        isSorted = false;
                    }
                }
            }
        }