Time: 11 ms (81.28%), Space: 20.3 MB (57.1%) - LeetHub

Author: MishkatIT

0268-missing-number/0268-missing-number.cpp

@@ -0,0 +1,15 @@
+class Solution {
+public:
+    int missingNumber(vector<int>& nums) {
+
+        int missing = 0;
+        int n = nums.size();
+        for (int i = 0; i <= n; i++) {
+            missing ^= i;
+        }
+        for (int i = 0; i < n; i++) {
+            missing ^= nums[i];
+        }
+        return missing;
+    }
+};