sebse/python-aoc-2021
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Day 09 (glamorized)

Browse Source
This commit is contained in:
Sebastian Seedorf
2021-12-14 11:15:36 +01:00
parent 507987855f
commit de0a250ed9
2 changed files with 2 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
day09/part1.py
View File

@@ -2,13 +2,11 @@
import numpy as np
import scipy.ndimage.filters as filters
import scipy.ndimage.morphology as morphology
arr = np.array([[int(n) for n in line.strip()] for line in open("input.txt")])
# https://stackoverflow.com/questions/3986345/how-to-find-the-local-minima-of-a-smooth-multidimensional-array-in-numpy-efficie
neighborhood = morphology.generate_binary_structure(len(arr.shape), 1)
neighborhood = np.array([[0, 1, 0], [1, 1, 1], [0, 1, 0]])
local_min = filters.minimum_filter(arr, footprint=neighborhood) == arr
local_max = filters.maximum_filter(arr, footprint=neighborhood) == arr
local_min_without_plateau = np.logical_and(local_min, np.logical_not(local_max))