Count-of-Equal-Bit-Pairs

import java.util.Scanner;

public class _08_CountOfEqualBitPairs {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        int number = input.nextInt();

        int count = 0;

        for (int i = 0; i < Integer.toBinaryString(number).length(); i++) {

            if (isFindPair(number, i, "11")) {
                count++;
            }

            if (isFindPair(number, i, "00")) {
                count++;
            }

        }

        System.out.println(count);
    }

    public static boolean isFindPair(int number, int position, String bits) {

        if (number == 0) {
            return false;
        }

        boolean isFindPair = false;

        int bitsAsInt = Integer.parseInt(bits, 2);

        int shift = position;

        int mask = Integer.parseInt(bits.replace("0", "1"), 2);

        int lastBits = (number >> shift) & mask;

        if (bitsAsInt == lastBits) {
            isFindPair = true;
        }

        return isFindPair;
    }

}