Create reverse-bits.cpp

Author: kamyu104

C++/reverse-bits.cpp

@@ -0,0 +1,16 @@
+// Time:  O(logn) = O(32)
+// Space: O(1)
+
+class Solution {
+public:
+    uint32_t reverseBits(uint32_t n) {
+        uint32_t result = 0;
+        int count = 32;
+        while (count--) {
+            result <<= 1;
+            result |= n & 1;
+            n >>= 1;
+        }
+        return result;
+    }
+};