public static void getPerStore(ArrayList<Transaction> transactionArray) {
        HashMap<String, Double> storeTotals = new HashMap<>();

        double min = 9999;
        double max = 0;
        double total = 0;
        double average = 0;
        for (Transaction transAct : transactionArray) {
            if (storeTotals.containsKey(Integer.toString(transAct.getStoreID()))) {

                double value = (double) storeTotals.get(Integer.toString(transAct.getStoreID()));
                value += transAct.getValue();

                if (max <= transAct.getValue()) {
                    max = transAct.getValue();
                }
                if (min >= transAct.getValue()) {
                    min = transAct.getValue();
                }

                storeTotals.put(Integer.toString(transAct.getStoreID()), value);
            } else {
                storeTotals.put(Integer.toString(transAct.getStoreID()), transAct.getValue());
            }
        }
        System.out.println("Totals for each store");
        for (Map.Entry<String, Double> entry : storeTotals.entrySet()) {

            System.out.println("Store ID: " + entry.getKey() + ", Total Value = " + entry.getValue());
        }

        for (Map.Entry<String, Double> entry : storeTotals.entrySet()) {
            total += entry.getValue();

        }

        average = total / storeTotals.size();
        System.out.println("Total for all stores: " + total);
        System.out.println("Average: " + average);
        System.out.println("Highest transaction: " + max);
        System.out.println("Lowest transaction: " + min);

//        return storeTotals;
    }