Create missingnumber.java

Author: Trmpsanjay

missingnumber.java

@@ -0,0 +1,16 @@
+/*
+try to implement using xor operation
+*/
+
+class Solution {
+    public int missingNumber(int[] nums) {
+        int sum = 0;
+        for(int i=0;i<nums.length;i++){
+            sum = sum + nums[i];
+        }
+         int ans = (nums.length*(nums.length+1))/2;
+        return ans-sum;
+        
+        
+    }
+}