🔢 Day 17

Author: AkashRajpurohit

README.md

@@ -25,6 +25,7 @@
 ## Week 3 🚧
 1. [Range Sum of BST](https://leetcode.com/explore/challenge/card/november-leetcoding-challenge/566/week-3-november-15th-november-21st/3532/) ➡️ [CPP Solution](Week3/rangeSumBST.cpp)
 2. [Longest Mountain in Array](https://leetcode.com/explore/challenge/card/november-leetcoding-challenge/566/week-3-november-15th-november-21st/3533/) ➡️ [CPP Solution](Week3/longestMountain.cpp)
+3. [Mirror Reflection](https://leetcode.com/explore/challenge/card/november-leetcoding-challenge/566/week-3-november-15th-november-21st/3534/) ➡️ [CPP Solution](Week3/mirrorReflection.cpp)
 
 ## Week 4 🚧
 Coming soon...

Week3/mirrorReflection.cpp

@@ -0,0 +1,19 @@
+// Ref: https://www.youtube.com/watch?v=_xIBOUWEq1c
+
+class Solution {
+public:
+    int mirrorReflection(int p, int q) {
+        int reflection = p, extension = q;
+        
+        while(reflection % 2 == 0 && extension % 2 == 0) {
+            reflection /= 2;
+            extension /= 2;
+        }
+        
+        if(extension % 2 == 0 && reflection % 2 == 1) return 0;
+        if(extension % 2 == 1 && reflection % 2 == 0) return 2;
+        if(extension % 2 == 1 && reflection % 2 == 1) return 1;
+        
+        return -1;
+    }
+};