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Commit 5af694b

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author
Openset
committed
Add: Pascal's Triangle II
1 parent 43ce826 commit 5af694b

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2 files changed

+42
-0
lines changed

2 files changed

+42
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lines changed
Lines changed: 9 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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package pascals_triangle_ii
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func getRow(rowIndex int) []int {
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row := make([]int, rowIndex+1)
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row[0], row[rowIndex] = 1, 1
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for i := 1; i < rowIndex; i++ {
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row[i] = row[i-1] * (rowIndex - i + 1) / i
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}
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return row
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}
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package pascals_triangle_ii
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import (
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"reflect"
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"testing"
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)
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type caseType struct {
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input int
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expected []int
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}
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func TestGetRow(t *testing.T) {
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tests := [...]caseType{
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{
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input: 2,
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expected: []int{1, 2, 1},
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},
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{
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input: 3,
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expected: []int{1, 3, 3, 1},
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},
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{
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input: 5,
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expected: []int{1, 5, 10, 10, 5, 1},
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},
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}
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for _, tc := range tests {
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output := getRow(tc.input)
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if !reflect.DeepEqual(output, tc.expected) {
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t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)
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}
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}
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}

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