advent-of-code/2015/python/matrix.py
2022-12-18 23:55:45 -05:00

139 lines
3.6 KiB
Python

split_word_to_int_list = lambda y: [int(w) for w in y]
split_line_to_int_list = lambda y: [int(w) for w in y.split(" ") if w]
def rotate(m, right=True): # -90
x = list(zip(*m[::-1]))
if right:
return x
return [list(reversed(y)) for y in x]
def load_matrix_file(name, func=None):
with open(name, "r") as f:
my_file = []
for line in f:
my_file.append(line.rstrip())
if func:
return [func(x) for x in my_file]
return [split_word_to_int_list(x) for x in my_file]
def get_neighbors(matrix, x, y):
neighbors = []
# left
try:
if x - 1 >= 0:
neighbors.append([(x - 1, y), matrix[y][x - 1]])
except IndexError:
pass
# right
try:
neighbors.append([(x + 1, y), matrix[y][x + 1]])
except IndexError:
pass
# up
try:
if y - 1 >= 0:
neighbors.append([(x, y - 1), matrix[y - 1][x]])
except IndexError:
pass
# down
try:
neighbors.append([(x, y + 1), matrix[y + 1][x]])
except IndexError:
pass
return neighbors
def get_neighbor_coords(matrix, c, r, diagonals=True):
height = len(matrix)
width = len(matrix[0])
if diagonals:
coords = (
(-1, -1), (0, -1), (1, -1),
(-1, 0), (1, 0),
(-1, 1), (0, 1), (1, 1),
)
else:
coords = (
(0, -1),
(-1, 0), (1, 0),
(0, 1),
)
neighbors = []
for _c, _r in coords:
try:
value = matrix[r + _r][c + _c] # Try to get a value error
if (r+_r>=0 and c+_c >= 0):
neighbors.append(
[{"c": c + _c, "r": r + _r}, value]
) # woo, no error, this coord is valid
except IndexError:
pass # okay we out of bounds boizzzz
return neighbors
def get_column(matrix, col):
pass
def matrix_of_size(width, height):
return [[0] * width for x in range(height)]
def get_size(matrix):
height = len(matrix)
width = len(matrix[0])
return height, width
def pmx(*matrices, _or='.', pad=True, space=True):
if len(matrices) > 1:
matrices = list(zip(*matrices))
for row in matrices:
r = []
for col in row:
r.append("".join([f"{int(x)or _or}".rjust(3) for x in col]))
print(" ".join(r))
else:
for row in matrices:
for c in row:
if pad:
f = lambda x: f"{int(x)or _or}".rjust(2)
if space:
f = lambda x: f"{int(x)or _or}".rjust(3)
else:
f = lambda x: f"{int(x)or _or}"
if space:
f = lambda x: f"{int(x)or _or} "
print("".join([f(x) for x in c]))
def ppmx(*matrices, _or=".", pad=True, space=True):
if len(matrices) > 1:
matrices = list(zip(*matrices))
for row in matrices:
r = []
for col in row:
r.append("".join([f"{x or '.'}".rjust(3) for x in col]))
print(" ".join(r))
else:
for row in matrices:
for c in row:
if pad:
f = lambda x: f"{x or '.'}".rjust(2)
if space:
f = lambda x: f"{x or '.'}".rjust(3)
else:
f = lambda x: f"{x or '.'}"
if space:
f = lambda x: f"{x or '.'} "
print("".join([f(x) for x in c]))
def p(*matrices):
pmx(*matrices, _or=" ", pad=False, space=False)