Inplace rotate square matrix by 90 degrees
Here given code implementation process.
/*
C Program
Inplace rotate square matrix by 90 degrees
*/
#include <stdio.h>
#define SIZE 6
//Rotate the square matrix element in 90 degrees
void rotate_90_degree(int matrix[SIZE][SIZE])
{
//Define loop control variables
int i = 1;
int j = 0;
int temp = 0;
// Diagonal transform the elements of upper triangular matrix
// Example
/*
/ / /
/ / Upper Triangular
/
------------
1 2 3
4 5 Element Like this
6
-------------
1 4 6
2 5 After transform
3
-------------
*/
for (i = 1; i < SIZE; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[j][i - j];
matrix[j][i - j] = matrix[i - j][j];
matrix[i - j][j] = temp;
j++;
}
}
// Diagonal transform the elements of lower triangular matrix
// Example
/*
/
/ /
/ / / Lower Triangular
-------
1
2 3 Element Like this
4 5 6
-------------
4
2 5 After transform
1 3 6
-------------
*/
for (i = 1; i < SIZE - 1; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[i - j][(SIZE - 1) - j];
matrix[i - j][(SIZE - 1) - j] = matrix[(SIZE - 1) - j][i - j];
matrix[(SIZE - 1) - j][i - j] = temp;
j++;
}
}
// Invert column values
/*
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for (i = 0; i < SIZE; ++i)
{
for (j = 0; j < SIZE / 2; ++j)
{
temp = matrix[j][i];
matrix[j][i] = matrix[(SIZE - 1) - j][i];
matrix[(SIZE - 1) - j][i] = temp;
}
}
}
//Display matrix elements
void show_data(int matrix[SIZE][SIZE])
{
int i = 0;
int j = 0;
for (i = 0; i < SIZE; ++i)
{
for (j = 0; j < SIZE; ++j)
{
printf("%3d", matrix[i][j]);
}
printf("\n");
}
printf("\n");
}
int main()
{
int matrix[SIZE][SIZE] =
{
{
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 , 26 , 27 , 28 , 29 , 30
} ,
{
31 , 32 , 33 , 34 , 35 , 36
}
};
printf("\n Before rotate \n");
show_data(matrix);
rotate_90_degree(matrix);
printf("\n After rotate \n");
show_data(matrix);
return 0;
}Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
/*
Java Program
Inplace rotate square matrix by 90 degrees
*/
public class MyMatrix
{
//Rotate the square matrix element in 90 degrees
public void rotate_90_degree(int [][]matrix,int size)
{
//Define loop control variables
int i = 1;
int j = 0;
int temp = 0;
// Diagonal transform the elements of upper triangular matrix
// Example
/*
/ / /
/ / Upper Triangular
/
------------
1 2 3
4 5 Element Like this
6
-------------
1 4 6
2 5 After transform
3
-------------
*/
for (i = 1; i < size; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[j][i - j];
matrix[j][i - j] = matrix[i - j][j];
matrix[i - j][j] = temp;
j++;
}
}
// Diagonal transform the elements of lower triangular matrix
// Example
/*
/
/ /
/ / / Lower Triangular
-------
1
2 3 Element Like this
4 5 6
-------------
4
2 5 After transform
1 3 6
-------------
*/
for (i = 1; i < size - 1; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[i - j][(size - 1) - j];
matrix[i - j][(size - 1) - j] = matrix[(size - 1) - j][i - j];
matrix[(size - 1) - j][i - j] = temp;
j++;
}
}
// Invert column values
/*
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for (i = 0; i < size; ++i)
{
for (j = 0; j < size / 2; ++j)
{
temp = matrix[j][i];
matrix[j][i] = matrix[(size - 1) - j][i];
matrix[(size - 1) - j][i] = temp;
}
}
}
//Display matrix elements
public void show_data(int[][] matrix,int size)
{
int i = 0;
int j = 0;
for (i = 0; i < size; ++i)
{
for (j = 0; j < size; ++j)
{
System.out.print(" " + matrix[i][j] );
}
System.out.print("\n");
}
System.out.print("\n");
}
public static void main(String[] args)
{
MyMatrix obj = new MyMatrix();
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 , 26 , 27 , 28 , 29 , 30
} , {
31 , 32 , 33 , 34 , 35 , 36
}
};
int size = matrix[0].length;
System.out.print("\n Before rotate \n");
obj.show_data(matrix,size);
obj.rotate_90_degree(matrix,size);
System.out.print("\n After rotate \n");
obj.show_data(matrix,size);
}
}Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
// Include header file
#include <iostream>
#define SIZE 6
using namespace std;
/*
C++ Program
Inplace rotate square matrix by 90 degrees
*/
class MyMatrix
{
public:
// Rotate the square matrix element in 90 degrees
void rotate_90_degree(int matrix[SIZE][SIZE])
{
// Define loop control variables
int i = 1;
int j = 0;
int temp = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
for (i = 1; i < SIZE; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[j][i - j];
matrix[j][i - j] = matrix[i - j][j];
matrix[i - j][j] = temp;
j++;
}
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
for (i = 1; i < SIZE - 1; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[i - j][(SIZE - 1) - j];
matrix[i - j][(SIZE - 1) - j] = matrix[(SIZE - 1) - j][i - j];
matrix[(SIZE - 1) - j][i - j] = temp;
j++;
}
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for (i = 0; i < SIZE; ++i)
{
for (j = 0; j < SIZE / 2; ++j)
{
temp = matrix[j][i];
matrix[j][i] = matrix[(SIZE - 1) - j][i];
matrix[(SIZE - 1) - j][i] = temp;
}
}
}
// Display matrix elements
void show_data(int matrix[SIZE][SIZE])
{
int i = 0;
int j = 0;
for (i = 0; i < SIZE; ++i)
{
for (j = 0; j < SIZE; ++j)
{
cout << " " << matrix[i][j];
}
cout << "\n";
}
cout << "\n";
}
};
int main()
{
MyMatrix obj = MyMatrix();
int matrix[SIZE][SIZE] = {
{
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 , 26 , 27 , 28 , 29 , 30
} , {
31 , 32 , 33 , 34 , 35 , 36
}
};
cout << "\n Before rotate \n";
obj.show_data(matrix);
obj.rotate_90_degree(matrix);
cout << "\n After rotate \n";
obj.show_data(matrix);
return 0;
}Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
// Include namespace system
using System;
/*
C# Program
Inplace rotate square matrix by 90 degrees
*/
public class MyMatrix
{
// Rotate the square matrix element in 90 degrees
public void rotate_90_degree(int[,] matrix, int size)
{
// Define loop control variables
int i = 1;
int j = 0;
int temp = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
for (i = 1; i < size; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[j,i - j];
matrix[j,i - j] = matrix[i - j,j];
matrix[i - j,j] = temp;
j++;
}
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
for (i = 1; i < size - 1; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[i - j,(size - 1) - j];
matrix[i - j,(size - 1) - j] = matrix[(size - 1) - j,i - j];
matrix[(size - 1) - j,i - j] = temp;
j++;
}
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for (i = 0; i < size; ++i)
{
for (j = 0; j < size / 2; ++j)
{
temp = matrix[j,i];
matrix[j,i] = matrix[(size - 1) - j,i];
matrix[(size - 1) - j,i] = temp;
}
}
}
// Display matrix elements
public void show_data(int[,] matrix, int size)
{
int i = 0;
int j = 0;
for (i = 0; i < size; ++i)
{
for (j = 0; j < size; ++j)
{
Console.Write(" " + matrix[i,j]);
}
Console.Write("\n");
}
Console.Write("\n");
}
public static void Main(String[] args)
{
MyMatrix obj = new MyMatrix();
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 , 26 , 27 , 28 , 29 , 30
} , {
31 , 32 , 33 , 34 , 35 , 36
}
};
int size = matrix.GetLength(0);
Console.Write("\n Before rotate \n");
obj.show_data(matrix, size);
obj.rotate_90_degree(matrix, size);
Console.Write("\n After rotate \n");
obj.show_data(matrix, size);
}
}Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
<?php
/*
Php Program
Inplace rotate square matrix by 90 degrees
*/
class MyMatrix
{
// Rotate the square matrix element in 90 degrees
public function rotate_90_degree( & $matrix, $size)
{
// Define loop control variables
$i = 1;
$j = 0;
$temp = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
for ($i = 1; $i < $size; ++$i)
{
$j = 0;
while ($j < $i)
{
$temp = $matrix[$j][$i - $j];
$matrix[$j][$i - $j] = $matrix[$i - $j][$j];
$matrix[$i - $j][$j] = $temp;
$j++;
}
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
for ($i = 1; $i < $size - 1; ++$i)
{
$j = 0;
while ($j < $i)
{
$temp = $matrix[$i - $j][($size - 1) - $j];
$matrix[$i - $j][($size - 1) - $j] = $matrix[($size - 1) - $j][$i - $j];
$matrix[($size - 1) - $j][$i - $j] = $temp;
$j++;
}
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for ($i = 0; $i < $size; ++$i)
{
for ($j = 0; $j < intval($size / 2); ++$j)
{
$temp = $matrix[$j][$i];
$matrix[$j][$i] = $matrix[($size - 1) - $j][$i];
$matrix[($size - 1) - $j][$i] = $temp;
}
}
}
// Display matrix elements
public function show_data( & $matrix, $size)
{
$i = 0;
$j = 0;
for ($i = 0; $i < $size; ++$i)
{
for ($j = 0; $j < $size; ++$j)
{
echo " ". $matrix[$i][$j];
}
echo "\n";
}
echo "\n";
}
}
function main()
{
$obj = new MyMatrix();
$matrix = array(
array(1, 2, 3, 4, 5, 6),
array(7, 8, 9, 10, 11, 12),
array(13, 14, 15, 16, 17, 18),
array(19, 20, 21, 22, 23, 24),
array(25, 26, 27, 28, 29, 30),
array(31, 32, 33, 34, 35, 36));
$size = count($matrix[0]);
echo "\n Before rotate \n";
$obj->show_data($matrix, $size);
$obj->rotate_90_degree($matrix, $size);
echo "\n After rotate \n";
$obj->show_data($matrix, $size);
}
main();Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
/*
Node Js Program
Inplace rotate square matrix by 90 degrees
*/
class MyMatrix
{
// Rotate the square matrix element in 90 degrees
rotate_90_degree(matrix, size)
{
// Define loop control variables
var i = 1;
var j = 0;
var temp = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
for (i = 1; i < size; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[j][i - j];
matrix[j][i - j] = matrix[i - j][j];
matrix[i - j][j] = temp;
j++;
}
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
for (i = 1; i < size - 1; ++i)
{
j = 0;
while (j < i)
{
temp = matrix[i - j][(size - 1) - j];
matrix[i - j][(size - 1) - j] = matrix[(size - 1) - j][i - j];
matrix[(size - 1) - j][i - j] = temp;
j++;
}
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
for (i = 0; i < size; ++i)
{
for (j = 0; j < parseInt(size / 2); ++j)
{
temp = matrix[j][i];
matrix[j][i] = matrix[(size - 1) - j][i];
matrix[(size - 1) - j][i] = temp;
}
}
}
// Display matrix elements
show_data(matrix, size)
{
var i = 0;
var j = 0;
for (i = 0; i < size; ++i)
{
for (j = 0; j < size; ++j)
{
process.stdout.write(" " + matrix[i][j]);
}
process.stdout.write("\n");
}
process.stdout.write("\n");
}
}
function main()
{
var obj = new MyMatrix();
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, 26, 27, 28, 29, 30] ,
[31, 32, 33, 34, 35, 36]
];
var size = matrix[0].length;
process.stdout.write("\n Before rotate \n");
obj.show_data(matrix, size);
obj.rotate_90_degree(matrix, size);
process.stdout.write("\n After rotate \n");
obj.show_data(matrix, size);
}
main();Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
# Python 3 Program
# Inplace rotate square matrix by 90 degrees
class MyMatrix :
# Rotate the square matrix element in 90 degrees
def rotate_90_degree(self, matrix, size) :
# Define loop control variables
i = 1
j = 0
temp = 0
#
# Diagonal transform the elements of upper triangular matrix
# Example
# ----------------------------
# / / /
# / / Upper Triangular
# /
# ----------------------------
# 1 2 3
# 4 5 Element Like this
# 6
# -----------------------------
# 1 4 6
# 2 5 After transform
# 3
# --------------------------------
#
i = 1
while (i < size) :
j = 0
while (j < i) :
temp = matrix[j][i - j]
matrix[j][i - j] = matrix[i - j][j]
matrix[i - j][j] = temp
j += 1
i += 1
#
# Diagonal transform the elements of lower triangular matrix
# Example
# ---------------------------
# /
# / /
# / / / Lower Triangular
# ---------------------------
# 1
# 2 3 Element Like this
# 4 5 6
#
# ------------------------------
# 4
# 2 5 After transform
# 1 3 6
# ------------------------------
#
i = 1
while (i < size - 1) :
j = 0
while (j < i) :
temp = matrix[i - j][(size - 1) - j]
matrix[i - j][(size - 1) - j] = matrix[(size - 1) - j][i - j]
matrix[(size - 1) - j][i - j] = temp
j += 1
i += 1
#
# Invert column values
# | | | |
# | | | | pattern
# | | | |
# | | | |
#
# -------
# 1 5 9 13
# 2 6 10 14 Element Like this
# 3 7 11 15
# 4 9 12 16
# -------------
# 4 9 12 16
# 3 7 11 15 After transform
# 2 6 10 14
# 1 5 9 13
# -------------
#
i = 0
while (i < size) :
j = 0
while (j < int(size / 2)) :
temp = matrix[j][i]
matrix[j][i] = matrix[(size - 1) - j][i]
matrix[(size - 1) - j][i] = temp
j += 1
i += 1
# Display matrix elements
def show_data(self, matrix, size) :
i = 0
j = 0
i = 0
while (i < size) :
j = 0
while (j < size) :
print(" ", matrix[i][j], end = "")
j += 1
print("\n", end = "")
i += 1
print("\n", end = "")
def main() :
obj = MyMatrix()
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, 26, 27, 28, 29, 30] ,
[31, 32, 33, 34, 35, 36]
]
size = len(matrix[0])
print("\n Before rotate \n", end = "")
obj.show_data(matrix, size)
obj.rotate_90_degree(matrix, size)
print("\n After rotate \n", end = "")
obj.show_data(matrix, size)
if __name__ == "__main__": main()Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
#
# Ruby Program
# Inplace rotate square matrix by 90 degrees
class MyMatrix
# Rotate the square matrix element in 90 degrees
def rotate_90_degree(matrix, size)
# Define loop control variables
i = 1
j = 0
temp = 0
#
# Diagonal transform the elements of upper triangular matrix
# Example
# ----------------------------
# / / /
# / / Upper Triangular
# /
# ----------------------------
# 1 2 3
# 4 5 Element Like this
# 6
# -----------------------------
# 1 4 6
# 2 5 After transform
# 3
# --------------------------------
#
i = 1
while (i < size)
j = 0
while (j < i)
temp = matrix[j][i - j]
matrix[j][i - j] = matrix[i - j][j]
matrix[i - j][j] = temp
j += 1
end
i += 1
end
#
# // Diagonal transform the elements of lower triangular matrix
# // Example
# ---------------------------
# /
# / /
# / / / Lower Triangular
# ---------------------------
# 1
# 2 3 Element Like this
# 4 5 6
#
# ------------------------------
# 4
# 2 5 After transform
# 1 3 6
# ------------------------------
#
i = 1
while (i < size - 1)
j = 0
while (j < i)
temp = matrix[i - j][(size - 1) - j]
matrix[i - j][(size - 1) - j] = matrix[(size - 1) - j][i - j]
matrix[(size - 1) - j][i - j] = temp
j += 1
end
i += 1
end
#
# Invert column values
# | | | |
# | | | | pattern
# | | | |
# | | | |
#
# -------
# 1 5 9 13
# 2 6 10 14 Element Like this
# 3 7 11 15
# 4 9 12 16
# -------------
# 4 9 12 16
# 3 7 11 15 After transform
# 2 6 10 14
# 1 5 9 13
# -------------
#
i = 0
while (i < size)
j = 0
while (j < size / 2)
temp = matrix[j][i]
matrix[j][i] = matrix[(size - 1) - j][i]
matrix[(size - 1) - j][i] = temp
j += 1
end
i += 1
end
end
# Display matrix elements
def show_data(matrix, size)
i = 0
j = 0
i = 0
while (i < size)
j = 0
while (j < size)
print(" ", matrix[i][j])
j += 1
end
print("\n")
i += 1
end
print("\n")
end
end
def main()
obj = MyMatrix.new()
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, 26, 27, 28, 29, 30] ,
[31, 32, 33, 34, 35, 36]
]
size = matrix[0].length
print("\n Before rotate \n")
obj.show_data(matrix, size)
obj.rotate_90_degree(matrix, size)
print("\n After rotate \n")
obj.show_data(matrix, size)
end
main()Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
/*
Scala Program
Inplace rotate square matrix by 90 degrees
*/
class MyMatrix
{
// Rotate the square matrix element in 90 degrees
def rotate_90_degree(matrix: Array[Array[Int]], size: Int): Unit = {
// Define loop control variables
var i: Int = 1;
var j: Int = 0;
var temp: Int = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
i = 1;
while (i < size)
{
j = 0;
while (j < i)
{
temp = matrix(j)(i - j);
matrix(j)(i - j) = matrix(i - j)(j);
matrix(i - j)(j) = temp;
j += 1;
}
i += 1;
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
i = 1;
while (i < size - 1)
{
j = 0;
while (j < i)
{
temp = matrix(i - j)((size - 1) - j);
matrix(i - j)((size - 1) - j) = matrix((size - 1) - j)(i - j);
matrix((size - 1) - j)(i - j) = temp;
j += 1;
}
i += 1;
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
i = 0;
while (i < size)
{
j = 0;
while (j < (size / 2).toInt)
{
temp = matrix(j)(i);
matrix(j)(i) = matrix((size - 1) - j)(i);
matrix((size - 1) - j)(i) = temp;
j += 1;
}
i += 1;
}
}
// Display matrix elements
def show_data(matrix: Array[Array[Int]], size: Int): Unit = {
var i: Int = 0;
var j: Int = 0;
i = 0;
while (i < size)
{
j = 0;
while (j < size)
{
print(" " + matrix(i)(j));
j += 1;
}
print("\n");
i += 1;
}
print("\n");
}
}
object Main
{
def main(args: Array[String]): Unit = {
var obj: MyMatrix = new MyMatrix();
var matrix: Array[Array[Int]] = Array(
Array(1, 2, 3, 4, 5, 6),
Array(7, 8, 9, 10, 11, 12),
Array(13, 14, 15, 16, 17, 18),
Array(19, 20, 21, 22, 23, 24),
Array(25, 26, 27, 28, 29, 30),
Array(31, 32, 33, 34, 35, 36)
);
var size: Int = matrix(0).length;
print("\n Before rotate \n");
obj.show_data(matrix, size);
obj.rotate_90_degree(matrix, size);
print("\n After rotate \n");
obj.show_data(matrix, size);
}
}Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
/*
Swift 4 Program
Inplace rotate square matrix by 90 degrees
*/
class MyMatrix
{
// Rotate the square matrix element in 90 degrees
func rotate_90_degree(_ matrix: inout[[Int]], _ size: Int)
{
// Define loop control variables
var i: Int = 1;
var j: Int = 0;
var temp: Int = 0;
/*
Diagonal transform the elements of upper triangular matrix
Example
----------------------------
/ / /
/ / Upper Triangular
/
----------------------------
1 2 3
4 5 Element Like this
6
-----------------------------
1 4 6
2 5 After transform
3
--------------------------------
*/
i = 1;
while (i < size)
{
j = 0;
while (j < i)
{
temp = matrix[j][i - j];
matrix[j][i - j] = matrix[i - j][j];
matrix[i - j][j] = temp;
j += 1;
}
i += 1;
}
/*
// Diagonal transform the elements of lower triangular matrix
// Example
---------------------------
/
/ /
/ / / Lower Triangular
---------------------------
1
2 3 Element Like this
4 5 6
------------------------------
4
2 5 After transform
1 3 6
------------------------------
*/
i = 1;
while (i < size - 1)
{
j = 0;
while (j < i)
{
temp = matrix[i - j][(size - 1) - j];
matrix[i - j][(size - 1) - j] = matrix[(size - 1) - j][i - j];
matrix[(size - 1) - j][i - j] = temp;
j += 1;
}
i += 1;
}
/*
Invert column values
| | | |
| | | | pattern
| | | |
| | | |
-------
1 5 9 13
2 6 10 14 Element Like this
3 7 11 15
4 9 12 16
-------------
4 9 12 16
3 7 11 15 After transform
2 6 10 14
1 5 9 13
-------------
*/
i = 0;
while (i < size)
{
j = 0;
while (j < size / 2)
{
temp = matrix[j][i];
matrix[j][i] = matrix[(size - 1) - j][i];
matrix[(size - 1) - j][i] = temp;
j += 1;
}
i += 1;
}
}
// Display matrix elements
func show_data(_ matrix: [[Int]], _ size: Int)
{
var i: Int = 0;
var j: Int = 0;
i = 0;
while (i < size)
{
j = 0;
while (j < size)
{
print(" ", matrix[i][j], terminator: "");
j += 1;
}
print("\n", terminator: "");
i += 1;
}
print("\n", terminator: "");
}
}
func main()
{
let obj: MyMatrix = MyMatrix();
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, 26, 27, 28, 29, 30] ,
[31, 32, 33, 34, 35, 36]
];
let size: Int = matrix[0].count;
print("\n Before rotate \n", terminator: "");
obj.show_data(matrix, size);
obj.rotate_90_degree(&matrix, size);
print("\n After rotate \n", terminator: "");
obj.show_data(matrix, size);
}
main();Output
Before rotate
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 26 27 28 29 30
31 32 33 34 35 36
After rotate
6 12 18 24 30 36
5 11 17 23 29 35
4 10 16 22 28 34
3 9 15 21 27 33
2 8 14 20 26 32
1 7 13 19 25 31
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