add trie class

tries/README.md

@@ -18,6 +18,37 @@
 
 <br>
 
+```python
+class Trie:
+
+    def __init__(self):
+        self.root = {}
+
+    def insert(self, word: str) -> None:
+        node = self.root
+        for c in word:
+            if c not in node:
+                node[c] = {}
+            node = node[c]
+        node['$'] = None
+        
+    def match(self, seq, prefix=False):
+        node = self.root
+        for c in seq:
+            if c not in node:
+                return False
+            node = node[c]
+        return prefix or ('$' in node)
+        
+    def search(self, word: str) -> bool:
+        return self.match(word)
+        
+    def startsWith(self, prefix: str) -> bool:
+        return self.match(prefix, True)
+```
+
+<br>
+
 ----
 
 ### insertion