diff --git a/competive.java b/competive.java
new file mode 100644
index 00000000..68817da3
--- /dev/null
+++ b/competive.java
@@ -0,0 +1,14 @@
+// two sum
+class Solution {
+    public int[] twoSum(int[] nums, int target) {
+         HashMap<Integer,Integer> map=new HashMap<>();
+       for(int i=0;i<nums.length;i++){
+        int res=target-nums[i];
+        if(map.containsKey(res)){
+            return new int[]{map.get(res),i};
+        }
+        map.put(nums[i],i);
+       }
+       return new int[]{};
+    }
+}