public class Shift implements ShiftInterface {
    @Override
    public void shift(SwapStoreInterface ss) {
        for (int i = 0; i < ss.length(); i++) {
            ss.setShifts(i, circularShifts(ss.lineIndices(i)));
        }

    }
    private int[][] circularShifts(int[] indices) {
        int[][] result = new int[indices.length][indices.length];
        for (int i = 0; i < indices.length; i++) {
            for (int j = 0; j < indices.length; j++) {
                result[i][j] = indices[(j+i)%indices.length];
            }
        }
        return result;
    }
}