2019,12,4

Author: Terry-Ma

1-两数之和.py

@@ -0,0 +1,8 @@
+class Solution:
+    def twoSum(self, nums: List[int], target: int) -> List[int]:
+        nums_dict = {}
+        for i in range(len(nums)):
+            if nums_dict.get(target - nums[i]) is not None:
+                return [nums_dict[target - nums[i]], i]
+            else:
+                nums_dict[nums[i]] = i