1 files changed, 20 insertions, 0 deletions
diff --git a/TwoSum.java b/TwoSum.java
new file mode 100644
index 0000000..b285c60
--- /dev/null
+++ b/TwoSum.java
@@ -0,0 +1,20 @@
+import java.lang.*;
+import java.util.*;
+
+class TwoSum {
+	public static int[] twoSum(int[] nums, int target) {
+		HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
+		for (int i = 0; i < nums.length; i++) {
+			if (map.containsKey(target - nums[i]))
+				return new int[] {map.get(target - nums[i]), i};
+			map.put(nums[i], i);
+		}
+		return new int[] {-1, -1};
+	}
+
+	public static void main(String[] args) {
+		int[] nums = {2, 7, 11, 15};
+		int target = 9;
+		System.out.println(Arrays.toString(twoSum(nums, target)));
+	}
+}