simplify rotate method

This commit is contained in:
Zafir Stojanovski 2025-02-11 13:54:54 +01:00
parent 767c34297f
commit 08d39bca81

View file

@ -60,22 +60,16 @@ class RotateMatrixDataset(ProceduralDataset):
matrix = [numbers[i * n : (i + 1) * n] for i in range(n)]
return matrix
def _rot90(self, matrix: list[list[int]]) -> list[list[int]]:
"""quarter clockwise rotation"""
return [list(row) for row in zip(*matrix[::-1])]
def _get_rotated(self, matrix: list[list[int]], num_rotations: int) -> list[list[int]]:
"""Rotate the matrix K times by 90 degrees clockwise"""
num_rotations %= 4
n = len(matrix)
output = deepcopy(matrix)
for _ in range(num_rotations):
for l in range(n // 2):
for i in range(l, n - 1 - l):
(output[l][i], output[i][n - 1 - l], output[n - 1 - l][n - 1 - i], output[n - 1 - i][l]) = (
output[n - 1 - i][l],
output[l][i],
output[i][n - 1 - l],
output[n - 1 - l][n - 1 - i],
)
output = self._rot90(output)
return output
def _matrix_to_str(self, matrix: list[list[int]]) -> str: