50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
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package pascal
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import (
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"fmt"
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"reflect"
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"testing"
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)
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var t20 = [][]int{
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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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{1, 16, 120, 560, 1820, 4368, 8008, 11440, 12870, 11440, 8008, 4368, 1820, 560, 120, 16, 1},
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{1, 17, 136, 680, 2380, 6188, 12376, 19448, 24310, 24310, 19448, 12376, 6188, 2380, 680, 136, 17, 1},
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{1, 18, 153, 816, 3060, 8568, 18564, 31824, 43758, 48620, 43758, 31824, 18564, 8568, 3060, 816, 153, 18, 1},
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{1, 19, 171, 969, 3876, 11628, 27132, 50388, 75582, 92378, 92378, 75582, 50388, 27132, 11628, 3876, 969, 171, 19, 1},
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}
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func TestTriangle(t *testing.T) {
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for n := 1; n <= 20; n++ {
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res := Triangle(n)
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want := t20[:n]
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if !reflect.DeepEqual(res, want) {
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t.Fatalf("Triangle(%d) = %s,\nwant:%s\n",
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n, format(res), format(want))
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}
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}
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t.Log(format(Triangle(20)))
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}
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func format(t [][]int) (s string) {
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for _, r := range t {
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s = fmt.Sprintf("%s\n%v", s, r)
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}
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return
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}
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