product-of-array-except-self_test.go

package problem0238

import (
	"fmt"
	"testing"

	"github.com/stretchr/testify/assert"
)

type question struct {
	para
	ans
}

// para 是参数
type para struct {
	nums []int
}

// ans 是答案
type ans struct {
	one []int
}

func Test_Problem0238(t *testing.T) {
	ast := assert.New(t)

	qs := []question{

		question{
			para{
				[]int{1, 2, 3, 4},
			},
			ans{
				[]int{24, 12, 8, 6},
			},
		},

		question{
			para{
				[]int{0, 0, 0, 0},
			},
			ans{
				[]int{0, 0, 0, 0},
			},
		},

		question{
			para{
				[]int{1, 0},
			},
			ans{
				[]int{0, 1},
			},
		},
		// 如需多个测试，可以复制上方元素。
	}

	for _, q := range qs {
		a, p := q.ans, q.para
		fmt.Printf("~~%v~~\n", p)

		ast.Equal(a.one, productExceptSelf(p.nums), "输入:%v", p)
	}
}

func Benchmark_ProductExceptSelf(b *testing.B) {
	nums := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 2, 3, 4, 5, 6, 7, 8, 9}
	for i := 1; i < b.N; i++ {
		productExceptSelf(nums)
	}
}