Count factorial numbers in given range

Here given code implementation process.

// C program
// Count factorial numbers in given range
#include <stdio.h>

//Count the number of factorials in given range
void count_factorial(int front, int back)
{
	if (front > back)
	{
		//Transform into a valid range
		count_factorial(back, front);
	}
	else
	{
		int result = 0;
		//Define loop controlling variables
		int counter = 1;
		int factorial = 1;
		//Execute the loop until the resulting factorial not exceeds the given limit
		while (factorial <= back)
		{
			//Calculate factorial
			factorial = factorial * counter;
			if (factorial >= front && factorial <= back)
			{
				//When factorial exist in range (front to back)
				result++;
			}
			counter++;
		}
		printf("\n Factorial in range [%d,%d] is : %d", front, back, result);
	}
}
int main()
{
	//Test case
	count_factorial(0, 200);
	count_factorial(300, 1000);
	count_factorial(1000, 2000);
	count_factorial(0, 0);
	count_factorial(1, 2);
	count_factorial(6000, 0);
	return 0;
}

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
/* 
  Java program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	public void count_factorial(int front, int back)
	{
		if (front > back)
		{
			//Transform into a valid range
			count_factorial(back, front);
		}
		else
		{
			int result = 0;
			//Define loop controlling variables
			int counter = 1;
			int factorial = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back)
			{
				//Calculate factorial
				factorial = factorial * counter;
				if (factorial >= front && factorial <= back)
				{
					//When factorial exist in range (front to back)
					result++;
				}
				counter++;
			}
			System.out.print("\n Factorial in range [" + front + "," + back + "] is : " + result);
		}
	}
	public static void main(String[] args)
	{
		Factorials obj = new Factorials();
		//Test case
		obj.count_factorial(0, 200);
		obj.count_factorial(300, 1000);
		obj.count_factorial(1000, 2000);
		obj.count_factorial(0, 0);
		obj.count_factorial(1, 2);
		obj.count_factorial(6000, 0);
	}
}

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
//Include header file
#include <iostream>
using namespace std;

/*
  C++ program 
  Count factorial numbers in given range
*/

class Factorials
{
	public:
		//Count the number of factorials in given range
		void count_factorial(int front, int back)
		{
			if (front > back)
			{
				//Transform into a valid range
				this->count_factorial(back, front);
			}
			else
			{
				int result = 0;
				//Define loop controlling variables
				int counter = 1;
				int factorial = 1;
				//Execute the loop until the resulting factorial not exceeds the given limit
				while (factorial <= back)
				{
					//Calculate factorial
					factorial = factorial *counter;
					if (factorial >= front && factorial <= back)
					{
						//When factorial exist in range (front to back)
						result++;
					}
					counter++;
				}
				cout << "\n Factorial in range [" << front << "," << back << "] is : " << result;
			}
		}
};
int main()
{
	Factorials obj = Factorials();
	//Test case
	obj.count_factorial(0, 200);
	obj.count_factorial(300, 1000);
	obj.count_factorial(1000, 2000);
	obj.count_factorial(0, 0);
	obj.count_factorial(1, 2);
	obj.count_factorial(6000, 0);
	return 0;
}

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
//Include namespace system
using System;
/* 
  C# program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	public void count_factorial(int front, int back)
	{
		if (front > back)
		{
			//Transform into a valid range
			count_factorial(back, front);
		}
		else
		{
			int result = 0;
			//Define loop controlling variables
			int counter = 1;
			int factorial = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back)
			{
				//Calculate factorial
				factorial = factorial * counter;
				if (factorial >= front && factorial <= back)
				{
					//When factorial exist in range (front to back)
					result++;
				}
				counter++;
			}
			Console.Write("\n Factorial in range [" + front + "," + back + "] is : " + result);
		}
	}
	public static void Main(String[] args)
	{
		Factorials obj = new Factorials();
		//Test case
		obj.count_factorial(0, 200);
		obj.count_factorial(300, 1000);
		obj.count_factorial(1000, 2000);
		obj.count_factorial(0, 0);
		obj.count_factorial(1, 2);
		obj.count_factorial(6000, 0);
	}
}

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
<?php
/* 
  Php program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	public	function count_factorial($front, $back)
	{
		if ($front > $back)
		{
			//Transform into a valid range
			$this->count_factorial($back, $front);
		}
		else
		{
			$result = 0;
			//Define loop controlling variables
			$counter = 1;
			$factorial = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while ($factorial <= $back)
			{
				//Calculate factorial
				$factorial = $factorial * $counter;
				if ($factorial >= $front && $factorial <= $back)
				{
					//When factorial exist in range (front to back)
					$result++;
				}
				$counter++;
			}
			echo "\n Factorial in range [". $front .",". $back ."] is : ". $result;
		}
	}
}

function main()
{
	$obj = new Factorials();
	//Test case
	$obj->count_factorial(0, 200);
	$obj->count_factorial(300, 1000);
	$obj->count_factorial(1000, 2000);
	$obj->count_factorial(0, 0);
	$obj->count_factorial(1, 2);
	$obj->count_factorial(6000, 0);
}
main();

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
/* 
  Node Js program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	count_factorial(front, back)
	{
		if (front > back)
		{
			//Transform into a valid range
			this.count_factorial(back, front);
		}
		else
		{
			var result = 0;
			//Define loop controlling variables
			var counter = 1;
			var factorial = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back)
			{
				//Calculate factorial
				factorial = factorial * counter;
				if (factorial >= front && factorial <= back)
				{
					//When factorial exist in range (front to back)
					result++;
				}
				counter++;
			}
			process.stdout.write("\n Factorial in range [" + front + "," + back + "] is : " + result);
		}
	}
}

function main()
{
	var obj = new Factorials();
	//Test case
	obj.count_factorial(0, 200);
	obj.count_factorial(300, 1000);
	obj.count_factorial(1000, 2000);
	obj.count_factorial(0, 0);
	obj.count_factorial(1, 2);
	obj.count_factorial(6000, 0);
}
main();

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
#   Python 3 program 
#   Count factorial numbers in given range

class Factorials :
	# Count the number of factorials in given range
	def count_factorial(self, front, back) :
		if (front > back) :
			# Transform into a valid range
			self.count_factorial(back, front)
		else :
			result = 0
			# Define loop controlling variables
			counter = 1
			factorial = 1
			# Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back) :
				# Calculate factorial
				factorial = factorial * counter
				if (factorial >= front and factorial <= back) :
					# When factorial exist in range (front to back)
					result += 1
				
				counter += 1
			
			print("\n Factorial in range [", front ,",", back ,"] is : ", result, end = "")
		
	

def main() :
	obj = Factorials()
	# Test case
	obj.count_factorial(0, 200)
	obj.count_factorial(300, 1000)
	obj.count_factorial(1000, 2000)
	obj.count_factorial(0, 0)
	obj.count_factorial(1, 2)
	obj.count_factorial(6000, 0)

if __name__ == "__main__": main()

Output

 Factorial in range [ 0 , 200 ] is :  5
 Factorial in range [ 300 , 1000 ] is :  1
 Factorial in range [ 1000 , 2000 ] is :  0
 Factorial in range [ 0 , 0 ] is :  0
 Factorial in range [ 1 , 2 ] is :  2
 Factorial in range [ 0 , 6000 ] is :  7
#   Ruby program 
#   Count factorial numbers in given range

class Factorials 
	# Count the number of factorials in given range
	def count_factorial(front, back) 
		if (front > back) 
			# Transform into a valid range
			self.count_factorial(back, front)
		else 
			result = 0
			# Define loop controlling variables
			counter = 1
			factorial = 1
			# Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back) 
				# Calculate factorial
				factorial = factorial * counter
				if (factorial >= front && factorial <= back) 
					# When factorial exist in range (front to back)
					result += 1
				end

				counter += 1
			end

			print("\n Factorial in range [", front ,",", back ,"] is : ", result)
		end

	end

end

def main() 
	obj = Factorials.new()
	# Test case
	obj.count_factorial(0, 200)
	obj.count_factorial(300, 1000)
	obj.count_factorial(1000, 2000)
	obj.count_factorial(0, 0)
	obj.count_factorial(1, 2)
	obj.count_factorial(6000, 0)
end

main()

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
/* 
  Scala program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	def count_factorial(front: Int, back: Int): Unit = {
		if (front > back)
		{
			//Transform into a valid range
			count_factorial(back, front);
		}
		else
		{
			var result: Int = 0;
			//Define loop controlling variables
			var counter: Int = 1;
			var factorial: Int = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back)
			{
				//Calculate factorial
				factorial = factorial * counter;
				if (factorial >= front && factorial <= back)
				{
					//When factorial exist in range (front to back)
					result += 1;
				}
				counter += 1;
			}
			print("\n Factorial in range [" + front + "," + back + "] is : " + result);
		}
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var obj: Factorials = new Factorials();
		//Test case
		obj.count_factorial(0, 200);
		obj.count_factorial(300, 1000);
		obj.count_factorial(1000, 2000);
		obj.count_factorial(0, 0);
		obj.count_factorial(1, 2);
		obj.count_factorial(6000, 0);
	}
}

Output

 Factorial in range [0,200] is : 5
 Factorial in range [300,1000] is : 1
 Factorial in range [1000,2000] is : 0
 Factorial in range [0,0] is : 0
 Factorial in range [1,2] is : 2
 Factorial in range [0,6000] is : 7
/* 
  Swift 4 program 
  Count factorial numbers in given range
*/
class Factorials
{
	//Count the number of factorials in given range
	func count_factorial(_ front: Int, _ back: Int)
	{
		if (front > back)
		{
			//Transform into a valid range
			self.count_factorial(back, front);
		}
		else
		{
			var result: Int = 0;
			//Define loop controlling variables
			var counter: Int = 1;
			var factorial: Int = 1;
			//Execute the loop until the resulting factorial not exceeds the given limit
			while (factorial <= back)
			{
				//Calculate factorial
				factorial = factorial * counter;
				if (factorial >= front && factorial <= back)
				{
					//When factorial exist in range (front to back)
					result += 1;
				}
				counter += 1;
			}
			print("\n Factorial in range [", front ,",", back ,"]is : ", result, terminator: "");
		}
	}
}
func main()
{
	let obj: Factorials = Factorials();
	//Test case
	obj.count_factorial(0, 200);
	obj.count_factorial(300, 1000);
	obj.count_factorial(1000, 2000);
	obj.count_factorial(0, 0);
	obj.count_factorial(1, 2);
	obj.count_factorial(6000, 0);
}
main();

Output

 Factorial in range [ 0 , 200 ]is :  5
 Factorial in range [ 300 , 1000 ]is :  1
 Factorial in range [ 1000 , 2000 ]is :  0
 Factorial in range [ 0 , 0 ]is :  0
 Factorial in range [ 1 , 2 ]is :  2
 Factorial in range [ 0 , 6000 ]is :  7


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