Swap all odd and even bits Java

PROGRAM TO SWAP ALL ODD AND EVEN BITS

class MAIN{

      

    // Function to swap even

    // and odd bits

    static int swapBits(int x)

    {

        // Get all even bits of x

        int even_bits = x & 0xAAAAAAAA; 

      

        // Get all odd bits of x

        int odd_bits = x & 0x55555555; 

      

        // Right shift even bits

        even_bits >>= 1; 

          

        // Left shift even bits

        odd_bits <<= 1; 

          

        // Combine even and odd bits

        return (even_bits | odd_bits); 

    }

      

    // Driver program to test above function

    public static void main(String[] args)

    {

        int x = 23; // 00010111

      

        // Output is 43 (00101011)

        System.out.println(swapBits(x));

    }

}




OUTPUT:

 43 

CREDITS: https://www.geeksforgeeks.org/swap-all-odd-and-even-bits/