diff --git a/leetCode/array/two-sum.py b/leetCode/array/two-sum.py
new file mode 100644
index 0000000..a0c9fc4
--- /dev/null
+++ b/leetCode/array/two-sum.py
@@ -0,0 +1,15 @@
+# https://leetcode.com/problems/two-sum/
+class Solution:
+    def twoSum(self, nums: List[int], target: int) -> List[int]:
+        num_index = {}
+        for i in range(len(nums)):
+            num_index[nums[i]] = i
+        
+        for i in range(len(nums)):
+            num = nums[i]
+            other = target - num
+            other_index = num_index.get(other)
+            if other_index and other_index != i:
+                return [i, other_index]
+        
+        return []