Igneaalis · Igneaalis · May 9, 2020 · May 13, 2020 · May 13, 2020 · May 13, 2020
diff --git a/README.md b/README.md
diff --git a/arrays.md b/arrays.md
@@ -0,0 +1,24 @@
+# Arrays
+
++ [Two Sum](#two-sum)
+
+## Two sum
+
+https://leetcode.com/problems/two-sum/
+
+```python
+class Solution(object):
+    def twoSum(self, nums, target):
+        """
+        :type nums: List[int]
+        :type target: int
+        :rtype: List[int]
+        """
+
+        indices = {}
+        for index in range(len(nums)):
+            if target - nums[index] in indices:
+                return [indices[target - nums[index]], index]
+            indices[nums[index]] = index
+
+```