Answer to Question #210450 in Python for sudheer

Question

M, N = input().split(' ')

M, N = int(M), int(N)

matrix = []

for _ in range(M):

row = [int(x) for x in input().split(' ')]

matrix.append(row)

K = int(input())

values = matrix[0][:-1] + [x[-1] for x in matrix][:-1] + matrix[-1][::-1][:-1] + [x[0] for x in matrix][::-1][:-1]

values = values[-K:] + values[:-K]

output = matrix

idxs = [(0, j) for j in range(N)][:-1] + [(i, N - 1) for i in range(M)][:-1] + [(M - 1, j) for j in range(N)][::-1][:-1] + [(i, 0) for i in range(M)][::-1][:-1]

idx =0

input:4 4

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

output:13 9 5 1 

14 6 7 2 

15 10 11 3 

16 12 8 4

the output should be like this :

13 9 5 1

14 7 11 2

15 6 10 3

16 12 8 4

Answer 1

class MyMatrix :
    
    def __init__(self, matrix) :
        # Get the size of matrix
        self.rows = len(matrix)
        self.cols = len(matrix[0])
    
    def change(self, matrix, row, col, index) :
        data = matrix[row][col]
        temp = 0
        # bottom right to botoom left
        i = col - 1
        while (i >= index) :
            temp = matrix[row][i]
            matrix[row][i] = data
            data = temp
            i -= 1  
        
        # botoom left to top right
        i = row - 1
        while (i >= index) :
            temp = matrix[i][index]
            matrix[i][index] = data
            data = temp
            i -= 1
            
        # top right to top left
        i = index + 1
        while (i <= col) :
            temp = matrix[index][i]
            matrix[index][i] = data
            data = temp
            i += 1
            
        # top left to bottom right
        i = index + 1
        while (i <= row) :
            temp = matrix[i][col]
            matrix[i][col] = data
            data = temp
            i += 1
    
    def rotate(self, matrix, size) :
        row = self.rows
        col = self.cols
        occurrence = self.cols
        if (row < col) :
            occurrence = row        
        i = 0
        while (i < int(occurrence / 2)) :
            row -= 1
            col -= 1
            self.change(matrix, row, col, i)
            i += 1
        
        if (size > 1) :
            self.rotate(matrix, size - 1)
        
    
    # Display matrix elements
    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() :
    M, N = input().split(' ')
    M, N = int(M), int(N)
    matrix = []
    for _ in range(M):
        row = [int(x) for x in input().split(' ')]
        matrix.append(row)
    K = int(input())
    obj = MyMatrix(matrix)
    size = K
    print("Before\n", end = "")
    obj.show_data(matrix)
    obj.rotate(matrix, size)
    print("After rotate ring in ", size ," times\n", end = "")
    obj.show_data(matrix)


if __name__ == "__main__":
    main()