Answer to Question #198303 in Python for Hari nadh babu

Question

Rotate Matrix Rings

The below url contains code for Rotate Matrix Rings

https://drive.google.com/file/d/1Kn65dh5pVUlIQShr4w7aHSZVNPPpCASF/view?usp=sharing

In the above url link it contains code while running code this error was showing as below

Enter M: 

Traceback (most recent call last):

 File "main.py", line 1, in <module>

  M = int(input("Enter M: "))

ValueError: invalid literal for int() with base 10: '3 4\r'

And also not coming expected test cases. The test cases are below

Test case 1

Input:-

4 4

1 2 3 4

5 6 7 8

9 10 11 12

13 14 15 16

3

Output:-

13 9 5 1

14 7 11 2

15 6 10 3

16 12 8 4

Test case 2

Input:-

3 4

1 2 3 4

10 11 12 5

9 8 7 6

2

Output:-

9 10 1 2

8 11 12 3

7 6 5 4

We need all test cases can be came when code was run. I want exact outputs for all test cases

Answer 1

Use this code:

M, N = input('Enter M, N: ').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('Enter K: '))

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
for i, j in idxs:
	output[i][j] = values[idx]
	idx += 1

for i in output:
        for j in i:
            print(j, end=' ')
        print()