Question

For this question we will be using arrays and classes in Java to compute the min, max, and average value of items for a given array of integers. Complete the following using the base template provided below:

-Create methods for min, max, and average and call them from main to print out their values.

-Add a method to determine the median (http://www.mathsisfun.com/median.html) and print that value. This method is currently not in the template, so you will need to add and call it.

-Add a try/catch exception handler to each method to make sure you don't divide by zero or use an out of bounds array index.

import java.util.Arrays;

class Main {

public static void main (String args[]){
int numbers[]= {1,5,-9,12,-3,89, 18,23,4,-6};

// Find minimum (lowest) value in array using loop
System.out.println("Minimum Value = " + getMinValue(numbers));

// Find maximum (largest) value in array using loop
System.out.println("Maximum Value = " + getMaxValue(numbers));

// Determine the average of all element values in array using loop

// ADD CODE TO CALL getAvgValue AND PRINT THE AVERAGE

// ADD CODE TO SORT THE NUMBERS IN THE ARRAY, PRINT THE SORTED ARRAY
  

}

//Find maximum (largest) value in array using loop
public static int getMaxValue(int[] numbers){
int maxValue = numbers[0];
  
// ADD CODE TO ADD A LOOP, CHECK EACH ARRAY ELEMENT
// AGAINST THE CURRENT maxValue (USE AN IF STATEMENT)

return maxValue;
}

//Find minimum (lowest) value in array using loop
public static int getMinValue(int[] numbers){
int minValue = numbers[0];
  
// ADD CODE TO ADD A LOOP, CHECK EACH ARRAY ELEMENT
// AGAINST THE CURRENT minValue (USE AN IF STATEMENT)

return minValue;
}

//Find the average of an array of integers
public static double getAvgValue(int[] numbers){

// ADD CODE TO SET UP NEEDED VARIABLES, ONE TO SUM ALL ARRAY ELEMENT VALUES, AND

// Used to store the average of all elements in an array
double average = 0;

// ADD CODE TO ADD A LOOP TO COMPUTE A RUNNING TOTAL OF ALL ARRAY ELEMENTS

// ADD CODE TO COMPUTE THE AVERAGE

return average;
}

} // Main

Answer 1

Code For Above Problem:

import java.util.Arrays;

class Main {

        public static void main(String args[]) {
                int numbers[] = { 1, 5, -9, 12, -3, 89, 18, 23, 4, -6 };

                // Find minimum (lowest) value in array using loop
                System.out.println("Minimum Value = " + getMinValue(numbers));

                // Find maximum (largest) value in array using loop
                System.out.println("Maximum Value = " + getMaxValue(numbers));

                // ADD CODE TO CALL getAvgValue AND PRINT THE AVERAGE
                System.out.println("Average Value = " + getAvgValue(numbers));

                // ADD CODE TO SORT THE NUMBERS IN THE ARRAY, PRINT THE SORTED ARRAY
                // USED ALGORITM IS INSERTION SORT
                for (int i = 1; i < numbers.length; i++) {
                        int key = numbers[i];
                        int j = i - 1;
                        while (j >= 0 && numbers[j] > key) {
                                numbers[j + 1] = numbers[j];
                                j = j - 1;
                        }
                        numbers[j + 1] = key;
                }

                // PRINTING SORTED ARRAY
                System.out.println("Sorted array:");
                System.out.println(Arrays.toString(numbers));

        }

//Find maximum (largest) value in array using loop
        public static int getMaxValue(int[] numbers) {
                int maxValue = numbers[0];

                try {

                        // ADD CODE TO ADD A LOOP, CHECK EACH ARRAY ELEMENT
                        // AGAINST THE CURRENT maxValue (USE AN IF STATEMENT)
                        for (int i = 1; i < numbers.length; i++) {
                                if (numbers[i] > maxValue) {
                                        maxValue = numbers[i];
                                }
                        }
                } catch (Exception e) {
                        e.printStackTrace();
                }

                return maxValue;
        }

        // Find minimum (lowest) value in array using loop
        public static int getMinValue(int[] numbers) {
                int minValue = numbers[0];

                try {
                        // ADD CODE TO ADD A LOOP, CHECK EACH ARRAY ELEMENT
                        // AGAINST THE CURRENT minValue (USE AN IF STATEMENT)
                        for (int i = 1; i < numbers.length; i++) {
                                if (numbers[i] < minValue) {
                                        minValue = numbers[i];
                                }
                        }
                } catch (Exception e) {
                        e.printStackTrace();
                }

                return minValue;
        }

        // Find the average of an array of integers
        public static double getAvgValue(int[] numbers) {

                // ADD CODE TO SET UP NEEDED VARIABLES, ONE TO SUM ALL ARRAY ELEMENT VALUES, AND
                double sum = 0;
                // Used to store the average of all elements in an array
                double average = 0;

                try {
                        // ADD CODE TO ADD A LOOP TO COMPUTE A RUNNING TOTAL OF ALL ARRAY ELEMENTS
                        for (int i = 0; i < numbers.length; i++) {
                                sum += numbers[i];
                        }

                        // ADD CODE TO COMPUTE THE AVERAGE
                        average = sum / numbers.length;
                } catch (Exception e) {
                        e.printStackTrace();
                }

                return average;
        }

} // Main

Sample Run Results:

Minimum Value = -9
Maximum Value = 89
Average Value = 13.4
Sorted array:
[-9, -6, -3, 1, 4, 5, 12, 18, 23, 89]

Images Of Code:

Image Of Sample Run Results: