MovingAverage.java

import java.util.List;

public class MovingAverage {

    public static boolean isStockGood(double currentValue, double movingAverage, double threshold) {
        if (currentValue > threshold) {
            System.out.println("Stock is good.");
            return true;
        } else {
            System.out.println("Stock is not good.");
            return false;
        }
    }

    public static void main(String[] args) {
        List<Double> historicalData = List.of(
                351.950012, 358.660004, 357.429993, 370.470001, 369.670013, 374.489990, 367.459991,
                368.369995, 376.130005, 383.450012, 381.779999, 385.200012, 390.700012, 393.179993,
                394.140015, 401.019989, 400.059998, 390.140015, 394.779999, 474.989990, 459.410004,
                454.720001
        );

        int windowSize = 3; // Number of data points to consider for the moving average
        double thresholdPercentage = 0.05; // Percentage factor to adjust the threshold

        for (int i = windowSize; i <= historicalData.size(); i++) {
            List<Double> subList = historicalData.subList(i - windowSize, i);
            double sum = 0;
            for (double data : subList) {
                sum += data;
            }
            double movingAverage = sum / windowSize;
            double currentValue = historicalData.get(i - 1);
            double threshold = movingAverage * (1 + thresholdPercentage);

            boolean isGoodStock = isStockGood(currentValue, movingAverage, threshold);
            System.out.println("Is the stock good? " + isGoodStock);
            System.out.println();
        }
    }
}