AP CSA 2022 Q3 - ReviewAnalysis Class


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Solution of Q3 (ReviewAnalysis) - Free Response Question - 2022


The original question can be found at: https://apcentral.collegeboard.org/media/pdf/ap22-frq-computer-science-a.pdf


Part (a)- public double getAverageRating() 


    public double getAverageRating()
    {
        int sum=0;
        for (int i=0; i< allReviews.length; i++)
        {
            sum = sum + allReviews[i].getRating();
        }
        return ((double)sum/allReviews.length);
    }

Part (b)- public ArrayList collectComments() 


    public ArrayList collectComments()
    {
        ArrayList arr = new ArrayList();
        String str= "";
        
        for (int i=0; i < allReviews.length; i++)
        {
            str= "";
            if (allReviews[i].getComment().indexOf("!") != -1)
            {
                //found; form the string and add to arraylist
                str = i+"-"+allReviews[i].getComment(); 
            
            if (!allReviews[i].getComment().endsWith(".") && !allReviews[i].getComment().endsWith("!"))
            {
                str = str + ".";
            }

            arr.add(str);
            }
        }
        
        return arr;
    }


Java project files (with Runner code):


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