XOR swap algorithm

The XOR swap algorithm is a method for swapping the values of two variables using the bitwise XOR operator. The key idea is to use XOR to manipulate the bits of the two variables without needing a temporary variable. Here's how it works step by step: Suppose we have two variables, `a` and `b`. 1. **Step 1:** Perform the XOR operation on `a` and `b`, and store the result back in `a`.