PartThree.java

package uk.ac.qub.programming;

public class PartTwo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        
        double[] temperatures = {3.4, 4.2, 9.0, 2.2, 4.5, 6.4, 3.1};
        double total = 0;
        double average;
        double minimum;
        double maximum;
        
        // get total
        for (double temp : temperatures) {
            total += temp;
        }
        
        // get average
        average = total/temperatures.length;
        // print average
        System.out.printf("Average: %.2f\n", average);
        
        minimum = getMin(temperatures);
        maximum = getMax(temperatures);
        
        System.out.printf("Minimum temperature: %.2f\n", minimum);
        System.out.printf("Maximum temperature: %.2f", maximum);
        

    }
    
    /**
     * Method to get the minimum value in an array.
     * @param array
     * @return
     */
    public static double getMin(double[] array) {
        
        int counter = 0;
        double minimum = Double.MAX_VALUE;
        
        if (array == null) {
            return 0;
        } else {
            while (counter < array.length){
                if (array[counter] < minimum) {
                    minimum = array[counter];
                }
                counter++;
            }
        }
        return minimum;
    }
    
    
    /**
     * Method to get the maximum value in the array.
     * @param array
     * @return
     */
    public static double getMax(double[] array) {
        
        int counter = 0;
        double maximum = Double.MIN_VALUE;
        
        if (array == null) {
            return 0;
        } else {
            while (counter < array.length){
                if (array[counter] > maximum) {
                    maximum = array[counter];
                }
                counter++;
            }
        }
        return maximum;
    }
    

}