28 lines
463 B
Go
28 lines
463 B
Go
package main
|
|
|
|
type TreeNode struct {
|
|
Val int
|
|
Left *TreeNode
|
|
Right *TreeNode
|
|
}
|
|
|
|
func main() {
|
|
|
|
}
|
|
func kthSmallest(root *TreeNode, k int) int {
|
|
var helper func(root *TreeNode) []int
|
|
helper = func(root *TreeNode) []int {
|
|
if root == nil {
|
|
return []int{}
|
|
}
|
|
tmp := make([]int, 0)
|
|
tmp = append(tmp, helper(root.Left)...)
|
|
tmp = append(tmp, root.Val)
|
|
tmp = append(tmp, helper(root.Right)...)
|
|
|
|
return tmp
|
|
}
|
|
res := helper(root)
|
|
return res[k-1]
|
|
}
|