153 lines
3.6 KiB
Elixir
153 lines
3.6 KiB
Elixir
defmodule PascalsTriangleTest do
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use ExUnit.Case
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test "one row" do
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assert PascalsTriangle.rows(1) == [[1]]
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end
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test "two rows" do
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assert PascalsTriangle.rows(2) == [[1], [1, 1]]
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end
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test "three rows" do
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assert PascalsTriangle.rows(3) == [[1], [1, 1], [1, 2, 1]]
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end
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test "four rows" do
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assert PascalsTriangle.rows(4) == [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1]]
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end
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test "five rows" do
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assert PascalsTriangle.rows(5) == [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1], [1, 4, 6, 4, 1]]
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end
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test "six rows" do
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assert PascalsTriangle.rows(6) == [
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[1],
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[1, 1],
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[1, 2, 1],
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[1, 3, 3, 1],
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[1, 4, 6, 4, 1],
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[1, 5, 10, 10, 5, 1]
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]
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end
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test "ten rows" do
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assert PascalsTriangle.rows(10) == [
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[1],
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[1, 1],
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[1, 2, 1],
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[1, 3, 3, 1],
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[1, 4, 6, 4, 1],
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[1, 5, 10, 10, 5, 1],
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[1, 6, 15, 20, 15, 6, 1],
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[1, 7, 21, 35, 35, 21, 7, 1],
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[1, 8, 28, 56, 70, 56, 28, 8, 1],
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[1, 9, 36, 84, 126, 126, 84, 36, 9, 1]
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]
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end
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test "20 rows" do
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assert PascalsTriangle.rows(20) == [
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[1],
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[1, 1],
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[1, 2, 1],
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[1, 3, 3, 1],
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[1, 4, 6, 4, 1],
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[1, 5, 10, 10, 5, 1],
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[1, 6, 15, 20, 15, 6, 1],
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[1, 7, 21, 35, 35, 21, 7, 1],
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[1, 8, 28, 56, 70, 56, 28, 8, 1],
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[1, 9, 36, 84, 126, 126, 84, 36, 9, 1],
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[1, 10, 45, 120, 210, 252, 210, 120, 45, 10, 1],
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[1, 11, 55, 165, 330, 462, 462, 330, 165, 55, 11, 1],
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[1, 12, 66, 220, 495, 792, 924, 792, 495, 220, 66, 12, 1],
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[1, 13, 78, 286, 715, 1287, 1716, 1716, 1287, 715, 286, 78, 13, 1],
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[1, 14, 91, 364, 1001, 2002, 3003, 3432, 3003, 2002, 1001, 364, 91, 14, 1],
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[1, 15, 105, 455, 1365, 3003, 5005, 6435, 6435, 5005, 3003, 1365, 455, 105, 15, 1],
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[
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1,
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16,
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120,
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560,
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1820,
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4368,
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8008,
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11440,
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12870,
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11440,
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8008,
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4368,
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1820,
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560,
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120,
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16,
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1
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],
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[
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1,
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17,
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136,
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680,
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2380,
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6188,
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12376,
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19448,
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24310,
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24310,
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19448,
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12376,
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6188,
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2380,
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680,
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136,
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17,
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1
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],
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[
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1,
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18,
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153,
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816,
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3060,
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8568,
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18564,
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31824,
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43758,
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48620,
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43758,
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31824,
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18564,
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8568,
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3060,
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816,
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153,
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18,
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1
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],
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[
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1,
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19,
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171,
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969,
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3876,
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11628,
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27132,
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50388,
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75582,
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92378,
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92378,
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75582,
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50388,
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27132,
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11628,
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3876,
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969,
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171,
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19,
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1
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]
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]
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end
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end
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