Russian peasant multiplication

Here given code implementation process.

// C Program
// Russian peasant multiplication
#include <stdio.h>

void multiplication(int a, int b)
{
	// Auxiliary variables
	int ans = 0;
	int x = a;
	int y = b;
	// Assume that given number is non negative
	// When number is negative then
	// handle negative numbers
	if (x < 0)
	{
		x = -x;
	}
	if (y < 0)
	{
		y = -y;
	}
	// Main logic
	while (y > 0)
	{
		if (y & 1 == 1)
		{
			ans = ans + x;
		}
		// Left shift by 1
		x = x << 1;
		// Righ shift by 1
		y = y >> 1;
	}
	if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
	{
		// Change number to its negative form
		ans = -ans;
	}
	// Display calculated result
	printf(" (%d x %d) : %d\n", a, b, ans);
}
int main()
{
	// Test
	multiplication(6, 7);
	multiplication(32, 10);
	multiplication(3, 5);
	multiplication(-3, 5);
	multiplication(-3, -5);
	multiplication(2, -5);
	return 0;
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
/*
    Java program
    Russian peasant multiplication
*/
public class RussianMultiplication
{
	public void multiplication(int a, int b)
	{
		// Auxiliary variables
		int ans = 0;
		int x = a;
		int y = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y & 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && 
            !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		System.out.println(" (" + a + " x " + b + ") : " + ans);
	}
	public static void main(String[] args)
	{
		RussianMultiplication task = new RussianMultiplication();
		// Test
		task.multiplication(6, 7);
		task.multiplication(32, 10);
		task.multiplication(3, 5);
		task.multiplication(-3, 5);
		task.multiplication(-3, -5);
		task.multiplication(2, -5);
	}
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
// Include header file
#include <iostream>
using namespace std;
/*
    C++ program
    Russian peasant multiplication
*/
class RussianMultiplication
{
	public: void multiplication(int a, int b)
	{
		// Auxiliary variables
		int ans = 0;
		int x = a;
		int y = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y &1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		cout << " (" << a << " x " << b << ") : " << ans << endl;
	}
};
int main()
{
	RussianMultiplication *task = new RussianMultiplication();
	// Test
	task->multiplication(6, 7);
	task->multiplication(32, 10);
	task->multiplication(3, 5);
	task->multiplication(-3, 5);
	task->multiplication(-3, -5);
	task->multiplication(2, -5);
	return 0;
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
// Include namespace system
using System;
/*
    Csharp program
    Russian peasant multiplication
*/
public class RussianMultiplication
{
	public void multiplication(int a, int b)
	{
		// Auxiliary variables
		int ans = 0;
		int x = a;
		int y = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y & 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		Console.WriteLine(" (" + a + " x " + b + ") : " + ans);
	}
	public static void Main(String[] args)
	{
		RussianMultiplication task = new RussianMultiplication();
		// Test
		task.multiplication(6, 7);
		task.multiplication(32, 10);
		task.multiplication(3, 5);
		task.multiplication(-3, 5);
		task.multiplication(-3, -5);
		task.multiplication(2, -5);
	}
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
package main
import "fmt"
/*
    Go program
    Russian peasant multiplication
*/

func multiplication(a, b int) {
	// Auxiliary variables
	var ans int = 0
	var x int = a
	var y int = b
	// Assume that given number is non negative
	// When number is negative then
	// handle negative numbers
	if x < 0 {
		x = -x
	}
	if y < 0 {
		y = -y
	}
	// Main logic
	for (y > 0) {
		if (y & 1) == 1 {
			ans = ans + x
		}
		// Left shift by 1
		x = x << 1
		// Righ shift by 1
		y = y >> 1
	}
	if ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)) {
		// Change number to its negative form
		ans = -ans
	}
	// Display calculated result
	fmt.Println(" (", a, " x ", b, ") : ", ans)
}
func main() {
	
	// Test
	multiplication(6, 7)
	multiplication(32, 10)
	multiplication(3, 5)
	multiplication(-3, 5)
	multiplication(-3, -5)
	multiplication(2, -5)
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
<?php
/*
    Php program
    Russian peasant multiplication
*/
class RussianMultiplication
{
	public	function multiplication($a, $b)
	{
		// Auxiliary variables
		$ans = 0;
		$x = $a;
		$y = $b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if ($x < 0)
		{
			$x = -$x;
		}
		if ($y < 0)
		{
			$y = -$y;
		}
		// Main logic
		while ($y > 0)
		{
			if (($y & 1) == 1)
			{
				$ans = $ans + $x;
			}
			// Left shift by 1
			$x = $x << 1;
			// Righ shift by 1
			$y = $y >> 1;
		}
		if ($ans > 0 && 
            !($a < 0 && $b < 0 || ($a >= 0 && $b >= 0)))
		{
			// Change number to its negative form
			$ans = -$ans;
		}
		// Display calculated result
		echo(" (".$a.
			" x ".$b.
			") : ".$ans.
			"\n");
	}
}

function main()
{
	$task = new RussianMultiplication();
	// Test
	$task->multiplication(6, 7);
	$task->multiplication(32, 10);
	$task->multiplication(3, 5);
	$task->multiplication(-3, 5);
	$task->multiplication(-3, -5);
	$task->multiplication(2, -5);
}
main();

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
/*
    Node JS program
    Russian peasant multiplication
*/
class RussianMultiplication
{
	multiplication(a, b)
	{
		// Auxiliary variables
		var ans = 0;
		var x = a;
		var y = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y & 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		console.log(" (" + a + " x " + b + ") : " + ans);
	}
}

function main()
{
	var task = new RussianMultiplication();
	// Test
	task.multiplication(6, 7);
	task.multiplication(32, 10);
	task.multiplication(3, 5);
	task.multiplication(-3, 5);
	task.multiplication(-3, -5);
	task.multiplication(2, -5);
}
main();

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
#    Python 3 program
#    Russian peasant multiplication
class RussianMultiplication :
	def multiplication(self, a, b) :
		#  Auxiliary variables
		ans = 0
		x = a
		y = b
		#  Assume that given number is non negative
		#  When number is negative then
		#  handle negative numbers
		if (x < 0) :
			x = -x
		
		if (y < 0) :
			y = -y
		
		#  Main logic
		while (y > 0) :
			if ((y & 1) == 1) :
				ans = ans + x
			
			#  Left shift by 1
			x = x << 1
			#  Righ shift by 1
			y = y >> 1
		
		if (ans > 0 and not(a < 0 and b < 0 or(a >= 0 and b >= 0))) :
			#  Change number to its negative form
			ans = -ans
		
		#  Display calculated result
		print(" (", a ," x ", b ,") : ", ans)
	

def main() :
	task = RussianMultiplication()
	#  Test
	task.multiplication(6, 7)
	task.multiplication(32, 10)
	task.multiplication(3, 5)
	task.multiplication(-3, 5)
	task.multiplication(-3, -5)
	task.multiplication(2, -5)

if __name__ == "__main__": main()

Output

 ( 6  x  7 ) :  42
 ( 32  x  10 ) :  320
 ( 3  x  5 ) :  15
 ( -3  x  5 ) :  -15
 ( -3  x  -5 ) :  15
 ( 2  x  -5 ) :  -10
#    Ruby program
#    Russian peasant multiplication
class RussianMultiplication 
	def multiplication(a, b) 
		#  Auxiliary variables
		ans = 0
		x = a
		y = b
		#  Assume that given number is non negative
		#  When number is negative then
		#  handle negative numbers
		if (x < 0) 
			x = -x
		end

		if (y < 0) 
			y = -y
		end

		#  Main logic
		while (y > 0) 
			if ((y & 1) == 1) 
				ans = ans + x
			end

			#  Left shift by 1
			x = x << 1
			#  Righ shift by 1
			y = y >> 1
		end

		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0))) 
			#  Change number to its negative form
			ans = -ans
		end

		#  Display calculated result
		print(" (", a ," x ", b ,") : ", ans, "\n")
	end

end

def main() 
	task = RussianMultiplication.new()
	#  Test
	task.multiplication(6, 7)
	task.multiplication(32, 10)
	task.multiplication(3, 5)
	task.multiplication(-3, 5)
	task.multiplication(-3, -5)
	task.multiplication(2, -5)
end

main()

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10

/*
    Scala program
    Russian peasant multiplication
*/
class RussianMultiplication()
{
	def multiplication(a: Int, b: Int): Unit = {
		// Auxiliary variables
		var ans: Int = 0;
		var x: Int = a;
		var y: Int = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y & 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		println(" (" + a + " x " + b + ") : " + ans);
	}
}
object Main
{
	def main(args: Array[String]): Unit = {
		var task: RussianMultiplication = new RussianMultiplication();
		// Test
		task.multiplication(6, 7);
		task.multiplication(32, 10);
		task.multiplication(3, 5);
		task.multiplication(-3, 5);
		task.multiplication(-3, -5);
		task.multiplication(2, -5);
	}
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10
/*
    Swift 4 program
    Russian peasant multiplication
*/
class RussianMultiplication
{
	func multiplication(_ a: Int, _ b: Int)
	{
		// Auxiliary variables
		var ans: Int = 0;
		var x: Int = a;
		var y: Int = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y & 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x << 1;
			// Righ shift by 1
			y = y >> 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		print(" (", a ," x ", b ,") : ", ans);
	}
}
func main()
{
	let task: RussianMultiplication = RussianMultiplication();
	// Test
	task.multiplication(6, 7);
	task.multiplication(32, 10);
	task.multiplication(3, 5);
	task.multiplication(-3, 5);
	task.multiplication(-3, -5);
	task.multiplication(2, -5);
}
main();

Output

 ( 6  x  7 ) :  42
 ( 32  x  10 ) :  320
 ( 3  x  5 ) :  15
 ( -3  x  5 ) :  -15
 ( -3  x  -5 ) :  15
 ( 2  x  -5 ) :  -10
/*
    Kotlin program
    Russian peasant multiplication
*/
class RussianMultiplication
{
	fun multiplication(a: Int, b: Int): Unit
	{
		// Auxiliary variables
		var ans: Int = 0;
		var x: Int = a;
		var y: Int = b;
		// Assume that given number is non negative
		// When number is negative then
		// handle negative numbers
		if (x < 0)
		{
			x = -x;
		}
		if (y < 0)
		{
			y = -y;
		}
		// Main logic
		while (y > 0)
		{
			if ((y and 1) == 1)
			{
				ans = ans + x;
			}
			// Left shift by 1
			x = x shl 1;
			// Righ shift by 1
			y = y shr 1;
		}
		if (ans > 0 && !(a < 0 && b < 0 || (a >= 0 && b >= 0)))
		{
			// Change number to its negative form
			ans = -ans;
		}
		// Display calculated result
		println(" (" + a + " x " + b + ") : " + ans);
	}
}
fun main(args: Array < String > ): Unit
{
	val task: RussianMultiplication = RussianMultiplication();
	// Test
	task.multiplication(6, 7);
	task.multiplication(32, 10);
	task.multiplication(3, 5);
	task.multiplication(-3, 5);
	task.multiplication(-3, -5);
	task.multiplication(2, -5);
}

Output

 (6 x 7) : 42
 (32 x 10) : 320
 (3 x 5) : 15
 (-3 x 5) : -15
 (-3 x -5) : 15
 (2 x -5) : -10


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