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swap-nodes-in-pairs_test.go
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swap-nodes-in-pairs_test.go
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package Problem0024
import (
"fmt"
"testing"
"github.com/stretchr/testify/assert"
)
type question struct {
para
ans
}
// para 是参数
// one 代表第一个参数
type para struct {
one []int
}
// ans 是答案
// one 代表第一个答案
type ans struct {
one []int
}
func Test_Problem0024(t *testing.T) {
ast := assert.New(t)
qs := []question{
question{
para{[]int{}},
ans{[]int{}},
},
question{
para{[]int{1}},
ans{[]int{1}},
},
question{
para{[]int{1, 2, 3, 4}},
ans{[]int{2, 1, 4, 3}},
},
question{
para{[]int{1, 2, 3, 4, 5}},
ans{[]int{2, 1, 4, 3, 5}},
},
// 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, l2s(swapPairs(s2l(p.one))), "输入:%v", p)
}
}
// convert *ListNode to []int
func l2s(head *ListNode) []int {
res := []int{}
for head != nil {
res = append(res, head.Val)
head = head.Next
}
return res
}
// convert []int to *ListNode
func s2l(nums []int) *ListNode {
if len(nums) == 0 {
return nil
}
res := &ListNode{
Val: nums[0],
}
temp := res
for i := 1; i < len(nums); i++ {
temp.Next = &ListNode{
Val: nums[i],
}
temp = temp.Next
}
return res
}