Question

Hello,

Someone help me with this data structure exercise. There is 2 part.

Answer 1

Since the programming language is not used, C# programming has been used for solution.

CRC Diagram CounterInterface UML Diagram Counter + void SetCounter +void IncreaseCounter positiveCounteroid SetCounter negativeCounteroid DeceCounte0 oid DecreaseCounter0: void oid lraseCounter ReturnCttentCountAs String oid RctunCuttentCountA tring Counter positiveCounter negative Counter + wid SetCounte0 void IncreaseCounte: + void DecrcaseCounte) void ReturnCuttentCountAsString0

//creating an interface with all abstract methods

interface CounterInterface
{
void SetCounter(); //method to set positive and negative counter
void IncreaseCounter(); //method to increase counter for non-negative numbers
void DecreaseCounter(); // method to increase counter for negative numbers
void ReturnCuttentCountAsString(); // method to display the current count
}

//Class Counter implementing the interface CounterInterface
class Counter : CounterInterface
{
//two fields are declared as static to check positive and negative count
public static int positiveCount;
public static int NegativeCount;

//setting counter values to 0
public void SetCounter()
{   
positiveCount = 0;
NegativeCount = 0;
}

//increasing the counter for positive numbers
public void IncreaseCounter()
{
positiveCount = positiveCount + 1;
}

//increasing the counter for negative numbers
public void DecreaseCounter()
{
NegativeCount = NegativeCount + 1;   
}

//returning the current counter as a string
public void ReturnCuttentCountAsString()
{
Console.WriteLine("Curent Postive Count is : " + positiveCount);
Console.WriteLine("Curent Negative Count is : " + NegativeCount);
}
}

class Program
{
static void Main(string[] args)
{
//declaring an array and assigning values
int[] numbers = { 1,2,6,5,6,98,0,-8,-7,8,9,-5,1,-2,0};

//creating object of Counter class
Counter obj = new Counter();

//call counter method to initialize values
obj.SetCounter();

//iterate over each element and increase counter of numbers based on the condition
foreach (var item in numbers)
{
if (item == 0)
{
//do nothing
}
else if (item > 0)
{
obj.IncreaseCounter(); //call method to increase positive count
}
else
{
obj.DecreaseCounter(); //call method to increase negative count
}
}

//call the method to display the result
obj.ReturnCuttentCountAsString();   
}
}