Question

Checker

+DisplayCount(int [], int):void

The code below is a partial implementation of the class diagram above. Note the similarities between
the class diagram and its implementation.

class Checker
{
   /*
    * Method DisplayCount
    * This method should display the numbers of times
    * a given number (x) is found in a given array (numbers)
    *
    * Provide the implementation (method body) for DisplayCount
    */
   public void DisplayCount(int[] numbers, int x)
   {

   }
}

I need to complete the implementation of method DisplayCount as described in the comments above, and I need to write a test class that uses class Checker and its DisplayCount method.

Assuming an array like this:

7

5

9

0

1

2

3

2

7

9

If the value of x is 10, the output should be:
10 is in the array 0 times
If the value of x is 7, the output should be:
7 is in the array 2 times

Answer 1

//Java code

class Checker
{
   
    public void DisplayCount(int[] numbers, int x)
    {
        int count =0;
        for (int i = 0; i <numbers.length ; i++) {
            if(x==numbers[i])
                count++;
        }
        System.out.println(x+" is in the array "+count+" times");
    }
}

// Test Class

public class Main {
    public static void main(String[] args)
    {
        int[] array = {7,5,9,0,1,2,3,2,7,9};
        Checker checker= new Checker();
        checker.DisplayCount(array,7);
    }
}

//Output

//This code in c#

using System;

class Checker
{

public void DisplayCount(int[] numbers, int x)
{
int count = 0;
for (int i = 0; i < numbers.Length; i++)
{
if (x == numbers[i])
count++;
}
Console.WriteLine(x + " is in the array " + count + " times");
}
}
class Program
{
static void Main(string[] args)
{
int[] array = { 7, 5, 9, 0, 1, 2, 3, 2, 7, 9 };
Checker checker = new Checker();
checker.DisplayCount(array, 7);
//pause
Console.ReadLine();
}
}

//Output

//If you need any help regarding this solution ........... please leave a comment ........ thanks

"C:\Program Files\Java\jdk1.8.0_221\bin\java.exe" ... 7 is in the array 2 times Process finished with exit code 0