51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package binarysearchtree
|
|
|
|
// SearchTreeData is a Binary Search Tree node
|
|
type SearchTreeData struct {
|
|
data int
|
|
left *SearchTreeData
|
|
right *SearchTreeData
|
|
}
|
|
|
|
// Bst creates a node from an int
|
|
func Bst(n int) *SearchTreeData {
|
|
return &SearchTreeData{data: n}
|
|
}
|
|
|
|
// Insert finds the correct location for a new node and inserts it there.
|
|
func (s *SearchTreeData) Insert(n int) *SearchTreeData {
|
|
if s == nil {
|
|
return Bst(n)
|
|
}
|
|
if s.data < n {
|
|
s.right = s.right.Insert(n)
|
|
} else {
|
|
s.left = s.left.Insert(n)
|
|
}
|
|
return s
|
|
}
|
|
|
|
// MapString maps a function to every node in the search tree and returns
|
|
// the []string result of it.
|
|
func (s *SearchTreeData) MapString(f func(int) string) []string {
|
|
var ret []string
|
|
if s != nil {
|
|
ret = append(ret, s.left.MapString(f)...)
|
|
ret = append(ret, f(s.data))
|
|
ret = append(ret, s.right.MapString(f)...)
|
|
}
|
|
return ret
|
|
}
|
|
|
|
// MapInt maps a function to every node in the search tree and returns
|
|
// the []int result of it.
|
|
func (s *SearchTreeData) MapInt(f func(int) int) []int {
|
|
var ret []int
|
|
if s != nil {
|
|
ret = append(ret, s.left.MapInt(f)...)
|
|
ret = append(ret, f(s.data))
|
|
ret = append(ret, s.right.MapInt(f)...)
|
|
}
|
|
return ret
|
|
}
|