CalculationUtils.java

package de.saring.util.unitcalc;

/**
 * This class contains several static methods for calculating exercise data.
 *
 * @author Stefan Saring
 * @version 1.0
 */
public class CalculationUtils {

    /**
     * Calculates the distance for the given AVG speed and duration.
     *
     * @param avgSpeed avarage speed (km/h)
     * @param duration duration (seconds)
     * @return the distance (km)
     */
    public static float calculateDistance(float avgSpeed, int duration) {
        return (duration / 3600f) * avgSpeed;
    }

    /**
     * Calculates the AVG speed for the given distance and duration.
     *
     * @param distance distance (km)
     * @param duration duration (seconds)
     * @return the AVG speed (km/h)
     */
    public static float calculateAvgSpeed(float distance, int duration) {
        return distance / (duration / 3600f);
    }

    /**
     * Calculates the duration for the given distance and AVG speed.
     *
     * @param distance distance (km)
     * @param avgSpeed avarage speed (km/h)
     * @return the duration (seconds)
     */
    public static int calculateDuration(float distance, float avgSpeed) {
        return (int) ((distance / avgSpeed) * 3600);
    }
}