Question

NAME CSC 236- ArrayList and Generics coding quz Write Java statements to odd the integers 1001, 1100, and 1110 to the resulting ArrayList from question 4 above. 5) 6) Write the Java statement to display the size of The resulting ArrayList from question 5 above. Write Java statements that use a for each loop to cycle through all the elements in on ArrayList of doubles named grades. 7) Write a Java method named average. The method should take an ArrayList of Integers as a parameter, compute the aw and return the average to the calling method 8)

please help with this homework, thanks !!

Answer 1

5)adding integrs to arrraylist.

ArrayList<Integer> list = new ArrayList<>();
        list.add(1001);
        list.add(1100);
        list.add(1110);

//create the list with the ArrayList and add the elements.

6)To display the size of ArrayList

int count = list.size();
        System.out.println("Count: " + count);

//list.size() ->used to find the arraylist size.

7)using for loop to cycle through the elements

ArrayList<Double> list = new ArrayList<>();

for (Double grades : list) {
            System.out.println(grades);
  }

8)find average:

float avg= average(list) // call method average with parameter Integer ArrayList list

System.out.println("Average: "+avg);

//average function. compute the average and return the value.

public float average(ArrayList<Integer> list) {
 int  total=0;
 float avg=0;
    for (int elem : list) {

total+=elem;

}

avg=(float)total / list.size();

return avg;

}

//any clarification please do comments