docs: add 288

src/288.Unique-Word-Abbreviation.py

@@ -0,0 +1,27 @@
+class ValidWordAbbr:
+
+    def __init__(self, dictionary: List[str]):
+        # a map between abbreviation and a set of words of this abbreviation
+        self.t = defaultdict(set)
+
+        for word in dictionary:
+            abbrev = self.getAbbrev(word)
+            self.t[abbrev].add(word)
+
+    def getAbbrev(self, word: str) -> str:
+        if len(word) < 3:
+            return word
+
+        return word[0] + str(len(word) - 2) + word[-1]
+
+    def isUnique(self, word: str) -> bool:
+        abbrev = self.getAbbrev(word)
+        if abbrev not in self.t or (len(self.t[abbrev]) == 1 and word in self.t[abbrev]):
+            return True
+
+        return False
+
+
+# Your ValidWordAbbr object will be instantiated and called as such:
+# obj = ValidWordAbbr(dictionary)
+# param_1 = obj.isUnique(word)