QuadroSolver

java.java

class QuadraticSolver {
    public static final int RESULT_BAD = 0;
    public static final int RESULT_ONE = 1;
    public static final int RESULT_TWO = 2;

    public static final Result solve(double a, double b, double c) {
        double d = b * b - 4 * a * c;
        if (d < 0)
            return new Result(RESULT_BAD, 0, 0);
        double sqd = Math.sqrt(d);
        double root1 = (-b + sqd) / (2 * a);
        double root2 = (-b - sqd) / (2 * a);
        return new Result(RESULT_TWO, root1, root2);
    }

    public static class Result {
        public int status;
        public double first;
        public double second;

        public Result(int status, double first, double second) {
            this.status = status;
            this.first = first;
            this.second = second;
        }
    }
}