commit c564f14dd149ad2de45cf157b87b5b3cb3364b95
Author: Xevion <xevioni@yandex.com>
Date:   Tue Jan 12 19:26:40 2021 -0600

    two-sum solution java

diff --git a/two-sum/Solution.java b/two-sum/Solution.java
new file mode 100644
index 0000000..a4705e1
--- /dev/null
+++ b/two-sum/Solution.java
@@ -0,0 +1,18 @@
+// Accepted
+// Runtime: 0 ms
+// Memory Usage: 39.7 MB
+// Submitted: January 12th, 2021
+
+class Solution {
+    public int[] twoSum(int[] nums, int target) {
+        Map<Integer, Integer> map = new HashMap<>();
+        for (int i = 0; i < nums.length; i++) {
+            int complement = target - nums[i];
+            if (map.containsKey(complement)) {
+                return new int[] { map.get(complement), i };
+            }
+            map.put(nums[i], i);
+        }
+        throw new IllegalArgumentException("No two sum solution");
+    }
+}
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