전가산기, 반가산기 만들어보기

Adder.java

public class Adder {

    public boolean[] byteadder(boolean[] byteA, boolean[] byteB) {
        boolean[] answer = new boolean[9];
        boolean carry = false;

        for (int i = 0; i < answer.length - 1; i++) {
            boolean[] value = fulladder(byteA[i], byteB[i], carry);
            answer[i] = value[1];
            carry = value[0];
        }

        answer[8] = carry;
        return answer;
    }

    public boolean[] fulladder(boolean bitA, boolean bitB, boolean c) {
        boolean sum = ((bitA != bitB) != c);
        boolean carry = (bitA && bitB) || (bitA && c) || (bitB && c);

        return new boolean[]{carry, sum};
    }
    
    public boolean[] halfadder(boolean bitA, boolean bitB) {
        boolean sum = (bitA != bitB);
        boolean carry = (bitA && bitB);

        return new boolean[]{carry, sum};
    }
}