Spiral Matrix Traversal
Iterate over a 2-D matrix in a clockwise or counter-clockwise spiral path.
Usage
Installation
pipenv install tcollier-spiralClockwise Example
from spiral.spiral_matrix import SpiralMatrix
matrix = SpiralMatrix([
[1, 2, 3, 4],
[5, 6, 7, 8],
[9, 10, 11, 12]])
for item in matrix:
print(item)
# 1
# 2
# 3
# 4
# 8
# 12
# 11
# 10
# 9
# 5
# 6
# 7Counter-clockwise Example
from spiral.spiral_matrix import SpiralMatrix
ccw_matrix = SpiralMatrix([
[1, 2, 3, 4],
[5, 6, 7, 8],
[9, 10, 11, 12]],
clockwise=False)
# Alternatively:
#
# cw_matrix = SpiralMatrix([
# [1, 2, 3, 4],
# [5, 6, 7, 8],
# [9, 10, 11, 12]])
# ccw_matrix = reversed(cw_matrix)
for item in ccw_matrix:
print(item)
# 1
# 5
# 9
# 10
# 11
# 12
# 8
# 4
# 3
# 2
# 6
# 7
