https://leetcode.com/problems/divide-array-into-equal-pairs

easy/divide_array_into_equal_pairs.py

@@ -0,0 +1,14 @@
+# https://leetcode.com/problems/divide-array-into-equal-pairs
+
+from typing import List, Set
+
+class Solution:
+    def divideArray(self, nums: List[int]) -> bool:
+        s: Set[int] = set()
+        for num in nums:
+            if num in s:
+                s.remove(num)
+            else:
+                s.add(num)
+        return not bool(len(s))
+