Question

Using the data in the following array write a program that finds and outputs the highest value, the lowest value, the count of elements in the array, the average value in the array, and the mode - the value that appears most often.

dataArray = {173.4, 873.7, 783.9. 000.0, -383.5, 229.5, -345.5, 645.5, 873.7, 591.2};

Answer 1

/***************ArrayOperation.java************************/

import java.text.DecimalFormat;

public class ArrayOperation {

   /**
   *
   * @param dataArray
   * @return the highest value in the array
   */
   public static double findhighest(double[] dataArray) {

       //assign min value to the highest variable
       double highest = Double.MIN_VALUE;

       for (int i = 0; i < dataArray.length; i++) {

           //compare with each element and store the highest
           if (dataArray[i] > highest) {

               highest = dataArray[i];
           }
       }

       return highest;
   }

   /**
   *
   * @param dataArray
   * @return the minimum element in the array
   */
   public static double findMinimum(double[] dataArray) {

       //assign the max value to lowest
       double lowest = Double.MAX_VALUE;

       for (int i = 0; i < dataArray.length; i++) {

           //compare and store the minimum element in the array
           if (dataArray[i] < lowest) {

               lowest = dataArray[i];
           }
       }

       return lowest;
   }

   //count the number of the element
   public static int countElement(double[] dataArray) {

       return dataArray.length;
   }

   /**
   *
   * @param dataArray
   * @return the average of the array
   */
   public static double findAverage(double[] dataArray) {
       double total = 0;
       int count = 0;
       for (int i = 0; i < dataArray.length; i++) {

           total = total + dataArray[i];
           count++;

       }

       return total / count;
   }

   /**
   *
   * @param array
   * @return the mode of the array
   */
   public static double findMode(double[] array) {

       double maxValue = 0, maxCount = 0;

       for (int i = 0; i < array.length; ++i) {
           int count = 0;
           for (int j = 0; j < array.length; ++j) {
               if (array[j] == array[i])
                   ++count;
           }
           if (count > maxCount) {
               maxCount = count;
               maxValue = array[i];
           }
       }

       return maxValue;
   }

   public static void main(String[] args) {

       double[] dataArray = { 173.4, 873.7, 783.9, 000.0, -383.5, 229.5, -345.5, 645.5, 873.7, 591.2 };
       //To limit the decimal places
       DecimalFormat format = new DecimalFormat(".##");
       System.out.println("The highest elememt is: " + findhighest(dataArray));
       System.out.println("The Lowest elememt is: " + findMinimum(dataArray));
       System.out.println("The Average of the array is: " + format.format(findAverage(dataArray)));
       System.out.println("The number of element in the array is:" + countElement(dataArray));
       System.out.println("The most apears number is: " + findMode(dataArray));
   }

}
/***********************output**************************/

The highest elememt is: 873.7
The Lowest elememt is: -383.5
The Average of the array is: 344.19
The number of element in the array is:10
The most apears number is: 873.7

Thanks a lot, Please let me know if you have any problem...........