Removed Power of 2 and xor swap.

bit_manipulation/power_of_2.cpp

@@ -1,27 +0,0 @@
-/**
- * @file
- * @brief Finding if a number is a power of 2.
- *
- * @details
- * To find if a number is a power of 2, we can check if bitwise AND of number
- * and number - 1 is zero or not. Only for the numbers which are a power of 2,
- * bitwise AND(x, x-1) is zero.
- *
- * @author [Ravishankar Joshi](https://github.com/ravibitsgoa)
- */
-
-#include <iostream>
-#include <vector>
-using std::cout;
-using std::endl;
-using std::vector;
-
-bool ispower2(int x) { return x > 0 && (x & (x - 1)) == 0; }
-
-int main() {
-    vector<int> arr{1, 2, 3, 4, 8, 10};
-    for (int x : arr) {
-        cout << x << " is " << (ispower2(x) ? "" : "not ") << "a power of 2."
-             << endl;
-    }
-}

bit_manipulation/xor_swap.cpp

@@ -1,19 +0,0 @@
-/**
- * @file
- * @brief Swapping two integers using xor.
- *
- * @author [Ravishankar Joshi](https://github.com/ravibitsgoa)
- */
-
-#include <iostream>
-using std::cout;
-using std::endl;
-
-int main() {
-    int a = 1, b = 2;
-    cout << "a = " << a << ", b = " << b << endl;
-    a ^= b;
-    b ^= a;
-    a ^= b;
-    cout << "a = " << a << ", b = " << b << endl;
-}