[Bit Manipulation] Reverse bits of a 32-bit unsigned integer

Author: shivansh

Diff for: BitManipulation/reverse_bits/reverseBits.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+using namespace std;
+
+uint32_t reverseBits(uint32_t n) {
+    int retval = 0;
+
+    for (int i = 0; i < 32; i++) {
+        retval <<= 1;
+        retval |= (n & 1);
+        n >>= 1;
+    }
+
+    return retval;
+}
+
+int main() {
+    // (Input)  12345678:    00000000 10111100 01100001 01001110
+    // (Output) 1921400064:  01110010 10000110 00111101 00000000
+    cout << reverseBits(12345678) << endl;
+    return 0;
+}