Question

In statistics the mode of a set of values is the value that occurs most often. Write a program that determines how many pieces of pie most people eat in a year. Set up an integer array that can hold responses from 30 people. For each person, enter the number of pieces they say they eat in a year. Then write a function that finds the mode of these 30 values. This will be the number of pie slices eaten by the most people. The function that finds and returns the mode should accept two arguments, an array of integers, and a value indicating how many elements are in the array.

Answer 1

//create the below class and execute it

import java.util.Random;

/**

* @author Haaric

*

*/

public class PieStats {

public static void main(String[] args) {

//below 5 lines are for generating randon int values to fill out our input array

Random ran = new Random();

int peopleCount = 30;

int[] input = new int[peopleCount];

for (int i = 0; i < peopleCount; i++)

input[i] = Math.abs(ran.nextInt(100));

System.out.println("Array of numbers are: ");

for (int i = 0; i < peopleCount; i++)

System.out.println(input[i] + " ");

System.out.println("mode of the provided array is: " + findMode(input, peopleCount));

}

/**

* @param pieCountArr

* @param size

* @return mode

*/

public static int findMode(int[] pieCountArr, int size) {

int maxVal = 0, maxCount = 0;

//outer for loop is for iterating over the array of the counts

// inner for loop is for finding the occuraces of the element in the array

//the if condition is to check the max count of the currrent element is more than the previous element occurances

for (int i = 0; i < size; ++i) {

int count = 0;

for (int j = 0; j < size; ++j) {

if (pieCountArr[j] == pieCountArr[i])

++count;

}

if (count > maxCount) {

maxCount = count;

maxVal = pieCountArr[i];

}

}

return maxVal;

}

}