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package implement_trie_prefix_tree
type Trie struct {	children map[rune]*Trie	isEnd    bool
	words map[string]bool}
func Constructor() Trie {	return Trie{children: make(map[rune]*Trie),		words: make(map[string]bool)}}
func (t *Trie) Insert(word string) {
	t.words[word] = true	node := t	for _, ch := range word {
		if node.children[ch] == nil {			var nt = Constructor()			node.children[ch] = &nt		}		node = node.children[ch]	}	node.isEnd = true}
func (t *Trie) SearchPrefix(prefix string) *Trie {	node := t	for _, ch := range prefix {
		if node.children[ch] == nil {			return nil		}		node = node.children[ch]	}	return node}
func (t *Trie) Search(word string) bool {	return t.words[word]}
func (t *Trie) StartsWith(prefix string) bool {
	if t.words[prefix] {
		return true	}	return t.SearchPrefix(prefix) != nil}