solve 1207

Author: mkdiryuko

problems/python/1207.unique-number-of-occurrences.py

@@ -0,0 +1,16 @@
+#
+# @lc app=leetcode id=1207 lang=python3
+#
+# [1207] Unique Number of Occurrences
+#
+from typing import List
+# @lc code=start
+class Solution:
+    def uniqueOccurrences(self, arr: List[int]) -> bool:
+        count_dic = {}
+        for num in arr:
+            count_dic[num] = count_dic.get(num, 0) + 1
+        return len(count_dic) == len(set(count_dic.values()))
+        
+# @lc code=end
+