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authorCharles <sircharlesaze@gmail.com>2019-08-11 22:41:34 +0200
committerCharles <sircharlesaze@gmail.com>2019-08-11 22:41:34 +0200
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diff --git a/python/11-largest_product_in_a_grid.py b/python/11-largest_product_in_a_grid.py
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@@ -1,80 +0,0 @@
-from functools import reduce
-
-grid = [
- [8, 2, 22, 97, 38, 15, 0, 40, 0, 75, 4, 5, 7, 78, 52, 12, 50, 77, 91, 8],
- [49, 49, 99, 40, 17, 81, 18, 57, 60, 87, 17, 40, 98, 43, 69, 48, 4, 56, 62, 0],
- [81, 49, 31, 73, 55, 79, 14, 29, 93, 71, 40, 67, 53, 88, 30, 3, 49, 13, 36, 65],
- [52, 70, 95, 23, 4, 60, 11, 42, 69, 24, 68, 56, 1, 32, 56, 71, 37, 2, 36, 91],
- [22, 31, 16, 71, 51, 67, 63, 89, 41, 92, 36, 54, 22, 40, 40, 28, 66, 33, 13, 80],
- [24, 47, 32, 60, 99, 3, 45, 2, 44, 75, 33, 53, 78, 36, 84, 20, 35, 17, 12, 50],
- [32, 98, 81, 28, 64, 23, 67, 10, 26, 38, 40, 67, 59, 54, 70, 66, 18, 38, 64, 70],
- [67, 26, 20, 68, 2, 62, 12, 20, 95, 63, 94, 39, 63, 8, 40, 91, 66, 49, 94, 21],
- [24, 55, 58, 5, 66, 73, 99, 26, 97, 17, 78, 78, 96, 83, 14, 88, 34, 89, 63, 72],
- [21, 36, 23, 9, 75, 0, 76, 44, 20, 45, 35, 14, 0, 61, 33, 97, 34, 31, 33, 95],
- [78, 17, 53, 28, 22, 75, 31, 67, 15, 94, 3, 80, 4, 62, 16, 14, 9, 53, 56, 92],
- [16, 39, 5, 42, 96, 35, 31, 47, 55, 58, 88, 24, 0, 17, 54, 24, 36, 29, 85, 57],
- [86, 56, 0, 48, 35, 71, 89, 7, 5, 44, 44, 37, 44, 60, 21, 58, 51, 54, 17, 58],
- [19, 80, 81, 68, 5, 94, 47, 69, 28, 73, 92, 13, 86, 52, 17, 77, 4, 89, 55, 40],
- [4, 52, 8, 83, 97, 35, 99, 16, 7, 97, 57, 32, 16, 26, 26, 79, 33, 27, 98, 66],
- [88, 36, 68, 87, 57, 62, 20, 72, 3, 46, 33, 67, 46, 55, 12, 32, 63, 93, 53, 69],
- [4, 42, 16, 73, 38, 25, 39, 11, 24, 94, 72, 18, 8, 46, 29, 32, 40, 62, 76, 36],
- [20, 69, 36, 41, 72, 30, 23, 88, 34, 62, 99, 69, 82, 67, 59, 85, 74, 4, 36, 16],
- [20, 73, 35, 29, 78, 31, 90, 1, 74, 31, 49, 71, 48, 86, 81, 16, 23, 57, 5, 54],
- [1, 70, 54, 71, 83, 51, 54, 69, 16, 92, 33, 48, 61, 43, 52, 1, 89, 19, 67, 48]
-]
-
-
-def isCorrectIndex(x, y):
- if 0 <= x < 20 and 0 <= y < 20:
- return True
- return False
-
-
-def getAdjacentNumbers(x, y):
- adjacent = {
- 'vertical': [],
- 'horizontal': [],
- 'diagonal': [],
- 'anti-diagonal': []
- }
-
- for i in range(4):
- # vertical list
- modifiedX = x + i
- if isCorrectIndex(modifiedX, y):
- adjacent['vertical'].append(grid[modifiedX][y])
-
- # horizontal list
- modifiedY = y + i
- if isCorrectIndex(x, modifiedY):
- adjacent['horizontal'].append(grid[x][modifiedY])
-
- # diagonal list
- if isCorrectIndex(modifiedX, modifiedY):
- adjacent['diagonal'].append(grid[modifiedX][modifiedY])
-
- # anti-diagonal list
- for i, j in zip(range(4), range(4)):
- AntiDiagModifiedX = x - j
- modifiedY = y + i
- if isCorrectIndex(AntiDiagModifiedX, modifiedY):
- adjacent['anti-diagonal'].append(grid[AntiDiagModifiedX][modifiedY])
-
- # filtering
- for key in adjacent.keys():
- if len(adjacent[key]) != 4:
- adjacent[key] = []
-
- return adjacent
-
-
-largest_sum = 0
-positions = ((x, y) for x in range(20) for y in range(20))
-for x, y in positions:
- adjacent = getAdjacentNumbers(x, y)
- for key in adjacent.keys():
- multiplied = reduce(lambda acc, val: acc * val, adjacent[key], 1)
- if multiplied > largest_sum:
- largest_sum = multiplied
-
-print(largest_sum)