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Diffstat (limited to 'python/018-max_path_sum_I.py')
| -rw-r--r-- | python/018-max_path_sum_I.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/python/018-max_path_sum_I.py b/python/018-max_path_sum_I.py new file mode 100644 index 0000000..f091782 --- /dev/null +++ b/python/018-max_path_sum_I.py @@ -0,0 +1,36 @@ +triangle = [ + [75], + [95, 64], + [17, 47, 82], + [18, 35, 87, 10], + [20, 4, 82, 47, 65], + [19, 1, 23, 75, 3, 34], + [88, 2, 77, 73, 7, 63, 67], + [99, 65, 4 , 28, 6, 16, 70, 92], + [41, 41, 26, 56, 83, 40, 80, 70, 33], + [41, 48, 72, 33, 47, 32, 37, 16, 94, 29], + [53, 71, 44, 65, 25, 43, 91, 52, 97, 51, 14], + [70, 11, 33, 28, 77, 73, 17, 78, 39, 68, 17, 57], + [91, 71, 52, 38, 17, 14, 91, 43, 58, 50, 27, 29, 48], + [63, 66, 4, 68, 89, 53, 67, 30, 73, 16, 69, 87, 40, 31], + [ 4, 62, 98, 27, 23, 9, 70, 98, 73, 93, 38, 53, 60, 4, 23] +] + +# très mauvaise récursion +def walk_through(triangle, paths=[], x=0, y=0, path=[]): + if x == len(triangle): + if y+1 == len(triangle[-1]): + return paths + return [*paths, path] + + new_path = [*path, triangle[x][y]] + return [ + *walk_through(triangle, paths, x+1, y, new_path), + *walk_through(triangle, paths, x+1, y+1, new_path) + ] + + +paths = walk_through(triangle) +max_path_sum = max([sum(x) for x in paths]) + +print(max_path_sum) |