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booktree.go
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32 lines (29 loc) · 722 Bytes
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package main
type Book struct {
Id string`json:"id"`
Title string`json:"title"`
ParentId string`json:"pid"`
Child []*Book`json:"child"`
}
func hasChild(SubNodeList []*Book, node *Book) (childs []*Book, ok bool) {
for _, v:= range SubNodeList{
if v.ParentId == node.Id{
childs = append(childs,v)
}
}
if childs != nil {
ok = true
}
return
}
func MakeTree(nodes []*Book, ParentNode *Book) {
if childs,ok := hasChild(nodes,ParentNode); ok {
ParentNode.Child = append(ParentNode.Child,childs...) // 把存在的child列表关联到parent里
// 递归子节点列表，查看是否还有下级子节点
for _,v := range childs{
if _,ok := hasChild(nodes,v);ok{
MakeTree(nodes,v)
}
}
}
}