package project3;

public class Transform {
    private char[] left = new char[65536];
    private char[] right = new char[65536];

    public Transform(){
        char x1 = 0xffff;
        char x2 = 0xffff;
        char x3 = 0xffff;
        char x4 = 0xffff;

    }

    public static char moveLeft(char n){
        char m1 = 0xf000;
        char m2 = 0xf000;
        for(int i = 0; i < 3; i++){
            if((n & m1)==0 || (n&(m1>>4))<<4==0){
                n = (char) ((n & m2) | ((n&~m2)<<4));
            }else{
                if((n&m1)==(n&(m1>>4))<<4){
                    n = (char) ((n & m2) + ((n&~m2)<<4));
                }
                m1 = (char) (m1 >> 4);
                m2 |= m2 >> 4;
            }
        }
        return n;
    }

    public static char moveRight(char n){
        char m1 = 0x000f;
        char m2 = 0x000f;
        for(int i = 0; i < 3; i++){
            if((n & m1)==0 || (n&(m1<<4))>>4==0){
                n = (char) ((n & m2) | ((n&~m2)>>4));
            }else{
                if((n&m1)==(n&(m1<<4))>>4){
                    n = (char) ((n & m2) + ((n&~m2)>>4));
                }
                m1 = (char) (m1 << 4);
                m2 |= m2 << 4;
            }
        }
        return n;
    }
}