2

solutions/lc1.py

@@ -0,0 +1,9 @@
+class Solution:
+    def twoSum(self, nums: List[int], target: int) -> List[int]:
+        seen = {}
+        for i, x in enumerate(nums):
+            need = target - x
+
+            if need in seen:
+                return [seen[need], i]
+            seen[x] = i