Rotate a Matrix by 180 degree

Here given code implementation process.

//C Program 
//Rotate a Matrix by 180 degree
#include<stdio.h>

#define ROW 5
#define COL 5
//rotate matrix elements in 180 degree
void rotate_matrix(int matrix[][COL])
{
  int temp=0;

  int row=ROW-1,col=COL-1;

  int row_size = (ROW/2);

  int col_size = COL;

  if(ROW%2==1)
  { 
    //When in case number of rows are Odd size
    row_size = (ROW/2)+1;
  }
  for (int i = 0; i < row_size; ++i)
  {
    if(ROW/2 == i)
    {
      //When in case number of rows are Odd size
      //In This case reverse middle row element
      col_size = COL/2;
    }
    else
    {
      col_size = COL;
    }
    for (int j = 0; j < col_size; ++j)
    {
      //Swap element
      temp=matrix[i][j];
      matrix[i][j]=matrix[row-i][col-j];
      matrix[row-i][col-j]=temp;
    }
  }
}
//Display matrix
void show_data(int matrix[][COL])
{
  for (int i = 0; i < ROW; ++i)
  {
    for (int j = 0; j < COL; ++j)
    {
      printf("%3d",matrix[i][j] );
    }
    printf("\n");
  }
  printf("\n");
}
int main()
{
  int matrix[][COL]={ 
    {1,  2,  3,  4 , 5}, 
    {6,  7,  8,  9 ,10},
    {11, 12, 13, 14, 15} ,
    {16, 17, 18, 19, 20},  
    {21, 22, 23, 24, 25}  
  }; 
  show_data(matrix);
  rotate_matrix(matrix);
  show_data(matrix);
  return 0;
}


Output

  1  2  3  4  5
  6  7  8  9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10  9  8  7  6
  5  4  3  2  1
/*
  C++ Program
  Rotate a Matrix by 180 degree
*/
#include<iostream>
#define ROW 5
#define COL 5
using namespace std;


class MyMatrix {
	public:
		int rows;
	int cols;
	MyMatrix() {
		//Get matrix size
		this->rows = ROW;
		this->cols = COL;
	}
	//rotate matrix elements in 180 degree
	void rotate_matrix(int matrix[][COL]) {
		int temp = 0;
		int row = this->rows - 1, col = this->cols - 1;
		int row_size = (this->rows / 2);
		int col_size = this->cols;
		if (this->rows % 2 == 1) {
			//When in case number of rows are Odd size
			row_size = (this->rows / 2) + 1;
		}
		for (int i = 0; i < row_size; ++i) {
			if (this->rows / 2 == i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				col_size = this->cols / 2;
			} else {
				col_size = this->cols;
			}
			for (int j = 0; j < col_size; ++j) {
				//Swap element
				temp = matrix[i][j];
				matrix[i][j] = matrix[row - i][col - j];
				matrix[row - i][col - j] = temp;
			}
		}
	}
	//Display matrix
	void show_data(int matrix[][COL]) {
		for (int i = 0; i < this->rows; ++i) {
			for (int j = 0; j < this->cols; ++j) {
				cout << " " << matrix[i][j];
			}
			cout << "\n";
		}
		cout << "\n";
	}
};
int main() {
	int matrix[][COL] = {
		{
			1,
			2,
			3,
			4,
			5
		},
		{
			6,
			7,
			8,
			9,
			10
		},
		{
			11,
			12,
			13,
			14,
			15
		},
		{
			16,
			17,
			18,
			19,
			20
		},
		{
			21,
			22,
			23,
			24,
			25
		}
	};
	MyMatrix obj ;
	obj.show_data(matrix);
	obj.rotate_matrix(matrix);
	obj.show_data(matrix);
	return 0;
}

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
/*
  Java Program
  Rotate a Matrix by 180 degree
*/

public class MyMatrix {
  int rows;
  int cols;
  MyMatrix(int[][] matrix) {
    //Get matrix size
    this.rows = matrix.length;
    this.cols = matrix[0].length;
  }
  //rotate matrix elements in 180 degree
  void rotate_matrix(int [][]matrix)
  {
    int temp=0;

    int row=this.rows-1,col=this.cols-1;

    int row_size = (this.rows/2);

    int col_size = this.cols;

    if(this.rows%2==1)
    { 
      //When in case number of rows are Odd size
      row_size = (this.rows/2)+1;
    }
    for (int i = 0; i < row_size; ++i)
    {
      if(this.rows/2 == i)
      {
        //When in case number of rows are Odd size
        //In This case reverse middle row element
        col_size = this.cols/2;
      }
      else
      {
        col_size = this.cols;
      }
      for (int j = 0; j < col_size; ++j)
      {
        //Swap element
        temp=matrix[i][j];
        matrix[i][j]=matrix[row-i][col-j];
        matrix[row-i][col-j]=temp;
      }
    }
  }
  //Display matrix
  void show_data(int [][]matrix)
  {
    for (int i = 0; i < this.rows; ++i)
    {
      for (int j = 0; j < this.cols; ++j)
      {
        System.out.print("  "+matrix[i][j] );
      }
      System.out.print("\n");
    }
    System.out.print("\n");
  }
  public static void main(String[] args) {
    int[][] matrix = { 
      {1,  2,  3,  4 , 5}, 
      {6,  7,  8,  9 ,10},
      {11, 12, 13, 14, 15} ,
      {16, 17, 18, 19, 20},  
      {21, 22, 23, 24, 25}  
    }; 
    MyMatrix obj = new MyMatrix(matrix);
    obj.show_data(matrix);
    obj.rotate_matrix(matrix);
    obj.show_data(matrix);
  }
}

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
/*
  C# Program
  Rotate a Matrix by 180 degree
*/
using System;

public class MyMatrix {
	int rows;
	int cols;
	MyMatrix(int[,] matrix) {
		//Get matrix size
		this.rows = matrix.GetLength(0);
		this.cols = matrix.GetLength(1);
	}
	//rotate matrix elements in 180 degree
	void rotate_matrix(int[,] matrix) {
		int temp = 0;
		int row = this.rows - 1, col = this.cols - 1;
		int row_size = (this.rows / 2);
		int col_size = this.cols;
		if (this.rows % 2 == 1) {
			//When in case number of rows are Odd size
			row_size = (this.rows / 2) + 1;
		}
		for (int i = 0; i < row_size; ++i) {
			if (this.rows / 2 == i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				col_size = this.cols / 2;
			} else {
				col_size = this.cols;
			}
			for (int j = 0; j < col_size; ++j) {
				//Swap element
				temp = matrix[i,j];
				matrix[i,j] = matrix[row - i,col - j];
				matrix[row - i,col - j] = temp;
			}
		}
	}
	//Display matrix
	void show_data(int[,] matrix) {
		for (int i = 0; i < this.rows; ++i) {
			for (int j = 0; j < this.cols; ++j) {
				Console.Write(" " + matrix[i,j]);
			}
			Console.Write("\n");
		}
		Console.Write("\n");
	}
	public static void Main(String[] args) {
		int[,] matrix = {
			{
				1,
				2,
				3,
				4,
				5
			},
			{
				6,
				7,
				8,
				9,
				10
			},
			{
				11,
				12,
				13,
				14,
				15
			},
			{
				16,
				17,
				18,
				19,
				20
			},
			{
				21,
				22,
				23,
				24,
				25
			}
		};
		MyMatrix obj = new MyMatrix(matrix);
		obj.show_data(matrix);
		obj.rotate_matrix(matrix);
		obj.show_data(matrix);
	}
}

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
<?php
/*
  Php Program
  Rotate a Matrix by 180 degree
*/
class MyMatrix {
	public $rows;
	public $cols;

	function __construct($matrix) {
		//Get matrix size
		$this->rows = count($matrix);
		$this->cols = count($matrix[0]);
	}
	//rotate matrix elements in 180 degree
	function rotate_matrix(&$matrix) {
		$temp = 0;
		$row = $this->rows - 1;
		$col = $this->cols - 1;
		$row_size = (intval($this->rows / 2));
		$col_size = $this->cols;
		if ($this->rows % 2 == 1) {
			//When in case number of rows are Odd size
			$row_size = (intval($this->rows / 2)) + 1;
		}
		for ($i = 0; $i < $row_size; ++$i) {
			if (intval($this->rows / 2) == $i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				$col_size = intval($this->cols / 2);
			} else {
				$col_size = $this->cols;
			}
			for ($j = 0; $j < $col_size; ++$j) {
				//Swap element
				$temp = $matrix[$i][$j];
				$matrix[$i][$j] = $matrix[$row - $i][$col - $j];
				$matrix[$row - $i][$col - $j] = $temp;
			}
		}
	}
	//Display matrix
	function show_data($matrix) {
		for ($i = 0; $i < $this->rows; ++$i) {
			for ($j = 0; $j < $this->cols; ++$j) {
				echo(" ". $matrix[$i][$j]);
			}
			echo("\n");
		}
		echo("\n");
	}
}

function main() {
	$matrix = array(
      array(1, 2, 3, 4, 5), 
      array(6, 7, 8, 9, 10), 
      array(11, 12, 13, 14, 15), 
      array(16, 17, 18, 19, 20), 
      array(21, 22, 23, 24, 25));
	$obj = new MyMatrix($matrix);
	$obj->show_data($matrix);
	$obj->rotate_matrix($matrix);
	$obj->show_data($matrix);

}
main();

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
/*
  Node Js Program
  Rotate a Matrix by 180 degree
*/
class MyMatrix {
	constructor(matrix) {
		//Get matrix size
		this.rows = matrix.length;
		this.cols = matrix[0].length;
	}

	//rotate matrix elements in 180 degree
	rotate_matrix(matrix) {
		var temp = 0;
		var row = this.rows - 1;
		var col = this.cols - 1;
		var row_size = (parseInt(this.rows / 2));
		var col_size = this.cols;
		if (this.rows % 2 == 1) {
			//When in case number of rows are Odd size
			row_size = (parseInt(this.rows / 2)) + 1;
		}

		for (var i = 0; i < row_size; ++i) {
			if (parseInt(this.rows / 2) == i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				col_size = parseInt(this.cols / 2);
			} else {
				col_size = this.cols;
			}

			for (var j = 0; j < col_size; ++j) {
				//Swap element
				temp = matrix[i][j];
				matrix[i][j] = matrix[row - i][col - j];
				matrix[row - i][col - j] = temp;
			}
		}
	}

	//Display matrix
	show_data(matrix) {
		for (var i = 0; i < this.rows; ++i) {
			for (var j = 0; j < this.cols; ++j) {
				process.stdout.write(" " + matrix[i][j]);
			}

			process.stdout.write("\n");
		}

		process.stdout.write("\n");
	}
}

function main(args) {
	var matrix = [
		[1, 2, 3, 4, 5],
		[6, 7, 8, 9, 10],
		[11, 12, 13, 14, 15],
		[16, 17, 18, 19, 20],
		[21, 22, 23, 24, 25]
	];
	var obj = new MyMatrix(matrix);
	obj.show_data(matrix);
	obj.rotate_matrix(matrix);
	obj.show_data(matrix);
}

main();

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
# Python 3 Program
# Rotate a Matrix by 180 degree
class MyMatrix :
	
	def __init__(self, matrix) :
		# Get matrix size
		self.rows = len(matrix)
		self.cols = len(matrix[0])
	
	def rotate_matrix(self, matrix) :
		temp = 0
		row = self.rows - 1
		col = self.cols - 1
		row_size = (int(self.rows / 2))
		col_size = self.cols
		if (self.rows % 2 == 1) :
			# When in case number of rows are Odd size
			row_size = (int(self.rows / 2)) + 1
		
		i = 0
		while (i < row_size) :
			if (int(self.rows / 2) == i) :
				# When in case number of rows are Odd size
				# In This case reverse middle row element
				col_size = int(self.cols / 2)
			else :
				col_size = self.cols
			
			j = 0
			while (j < col_size) :
				# Swap element
				temp = matrix[i][j]
				matrix[i][j] = matrix[row - i][col - j]
				matrix[row - i][col - j] = temp
				j += 1
			
			i += 1
		
	
	def show_data(self, matrix) :
		i = 0
		while (i < self.rows) :
			j = 0
			while (j < self.cols) :
				print(" ", matrix[i][j], end = "")
				j += 1
			
			print("\n", end = "")
			i += 1
		
		print("\n", end = "")
	

def main() :
	matrix = [
		[1, 2, 3, 4, 5],
		[6, 7, 8, 9, 10],
		[11, 12, 13, 14, 15],
		[16, 17, 18, 19, 20],
		[21, 22, 23, 24, 25]
	]
	obj = MyMatrix(matrix)
	obj.show_data(matrix)
	obj.rotate_matrix(matrix)
	obj.show_data(matrix)


if __name__ == "__main__":
	main()

Output

  1  2  3  4  5
  6  7  8  9  10
  11  12  13  14  15
  16  17  18  19  20
  21  22  23  24  25

  25  24  23  22  21
  20  19  18  17  16
  15  14  13  12  11
  10  9  8  7  6
  5  4  3  2  1
# Ruby Program
# Rotate a Matrix by 180 degree
class MyMatrix 
    # Define the accessor and reader of class MyMatrix
    attr_reader :rows, :cols
    attr_accessor :rows, :cols
	
	def initialize(matrix) 
		# Get matrix size
		self.rows = matrix.length
		self.cols = matrix[0].length
	end
	def rotate_matrix(matrix) 
		temp = 0
		row = self.rows - 1
		col = self.cols - 1
		row_size = (self.rows / 2)
		col_size = self.cols
		if (self.rows % 2 == 1) 
			# When in case number of rows are Odd size
			row_size = (self.rows / 2) + 1
		end
		i = 0
		while (i < row_size) 
			if (self.rows / 2 == i) 
				# When in case number of rows are Odd size
				# In This case reverse middle row element
				col_size = self.cols / 2
			else 
				col_size = self.cols
			end
			j = 0
			while (j < col_size) 
				# Swap element
				temp = matrix[i][j]
				matrix[i][j] = matrix[row - i][col - j]
				matrix[row - i][col - j] = temp
				j += 1
			end
			i += 1
		end
	end
	def show_data(matrix) 
		i = 0
		while (i < self.rows) 
			j = 0
			while (j < self.cols) 
				print(" ", matrix[i][j])
				j += 1
			end
			print("\n")
			i += 1
		end
		print("\n")
	end
end
def main() 
	matrix = [
		[1, 2, 3, 4, 5],
		[6, 7, 8, 9, 10],
		[11, 12, 13, 14, 15],
		[16, 17, 18, 19, 20],
		[21, 22, 23, 24, 25]
	]
	obj = MyMatrix.new(matrix)
	obj.show_data(matrix)
	obj.rotate_matrix(matrix)
	obj.show_data(matrix)
end

main()

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1

/*
  Scala Program
  Rotate a Matrix by 180 degree
*/
class MyMatrix(var rows: Int,var cols: Int) {


	def this(matrix: Array[Array[Int]]) {
		//Get matrix size
		this(matrix.length,matrix(0).length);
	}
	def rotate_matrix(matrix: Array[Array[Int]]): Unit = {
		var temp: Int = 0;
		val row: Int = this.rows - 1;
		val col: Int = this.cols - 1;
		var row_size: Int = ((this.rows / 2).toInt);
		var col_size: Int = this.cols;

		if (this.rows % 2 == 1) {
			//When in case number of rows are Odd size
			row_size = ((this.rows / 2).toInt) + 1;
		}
		var i: Int = 0;
		while (i < row_size) {
			if ((this.rows / 2).toInt == i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				col_size = (this.cols / 2).toInt;
			} else {
				col_size = this.cols;
			}
			var j: Int = 0;
			while (j < col_size) {
				//Swap element
				temp = matrix(i)(j);
				matrix(i)(j) = matrix(row - i)(col - j);
				matrix(row - i)(col - j) = temp;
				j += 1;
			}
			i += 1;
		}
	}
	def show_data(matrix: Array[Array[Int]]): Unit = {
		var i: Int = 0;
		while (i < this.rows) {
			var j: Int = 0;
			while (j < this.cols) {
				print(" " + matrix(i)(j));
				j += 1;
			}
			print("\n");
			i += 1;
		}
		print("\n");
	}
}
object Main {
	def main(args: Array[String]): Unit = {
		var matrix: Array[Array[Int]] = Array(
			Array(1, 2, 3, 4, 5),
			Array(6, 7, 8, 9, 10),
			Array(11, 12, 13, 14, 15),
			Array(16, 17, 18, 19, 20),
			Array(21, 22, 23, 24, 25));
		val obj: MyMatrix = new MyMatrix(matrix);
		obj.show_data(matrix);
		obj.rotate_matrix(matrix);
		obj.show_data(matrix);
	}
}

Output

 1 2 3 4 5
 6 7 8 9 10
 11 12 13 14 15
 16 17 18 19 20
 21 22 23 24 25

 25 24 23 22 21
 20 19 18 17 16
 15 14 13 12 11
 10 9 8 7 6
 5 4 3 2 1
/*
  Swift Program
  Rotate a Matrix by 180 degree
*/
class MyMatrix {
	var rows: Int;
	var cols: Int;
	init(_ matrix: [
		[Int]
	]) {
		//Get matrix size
		self.rows = matrix.count;
		self.cols = matrix[0].count;
	}
	func rotate_matrix(_ matrix: inout [
		[Int]
	]) {
		var temp: Int = 0;
		let row: Int = self.rows - 1;
		let col: Int = self.cols - 1;
		var row_size: Int = (self.rows / 2);
		var col_size: Int = self.cols;
		if (self.rows % 2 == 1) {
			//When in case number of rows are Odd size
			row_size = (self.rows / 2) + 1;
		}
		var i: Int = 0;
		while (i < row_size) {
			if (self.rows / 2 == i) {
				//When in case number of rows are Odd size
				//In This case reverse middle row element
				col_size = self.cols / 2;
			} else {
				col_size = self.cols;
			}
			var j: Int = 0;
			while (j < col_size) {
				//Swap element
				temp = matrix[i][j];
				matrix[i][j] = matrix[row - i][col - j];
				matrix[row - i][col - j] = temp;
				j += 1;
			}
			i += 1;
		}
	}
	func show_data(_ matrix: [
		[Int]
	]) {
		var i: Int = 0;
		while (i < self.rows) {
			var j: Int = 0;
			while (j < self.cols) {
				print(" ", matrix[i][j], terminator: "");
				j += 1;
			}
			print("\n", terminator: "");
			i += 1;
		}
		print("\n", terminator: "");
	}
}
func main() {
	var matrix: [
		[Int]
	] = [
		[1, 2, 3, 4, 5],
		[6, 7, 8, 9, 10],
		[11, 12, 13, 14, 15],
		[16, 17, 18, 19, 20],
		[21, 22, 23, 24, 25]
	];
	let obj: MyMatrix = MyMatrix(matrix);
	obj.show_data(matrix);
	obj.rotate_matrix(&matrix);
	obj.show_data(matrix);
}
main();

Output

  1  2  3  4  5
  6  7  8  9  10
  11  12  13  14  15
  16  17  18  19  20
  21  22  23  24  25

  25  24  23  22  21
  20  19  18  17  16
  15  14  13  12  11
  10  9  8  7  6
  5  4  3  2  1


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