ColorHSB.java

public class ColorHSB {
    private final int hue, sat, bri;

    // Creates a color with hue h, saturation s, and brightness b.
    public ColorHSB(int h, int s, int b) {
        if (h < 0 || h > 359)
            throw new IllegalArgumentException("the hue must be between 0 and 359");
        if (s < 0 || s > 100)
            throw new IllegalArgumentException("the saturation must be between 0 and 100");
        if (b < 0 || b > 100)
            throw new IllegalArgumentException("the brightness must be between 0 and 100");

        hue = h;
        sat = s;
        bri = b;
    }

    // Returns a string representation of this color, using the format (h, s, b).
    public String toString() {
        return "(" + hue + ", " + sat + ", " + bri + ")";
    }

    // Is this color a shade of gray?
    public boolean isGrayscale() {
        if (sat == 0 || bri == 0) return true;
        return false;
    }

    // Returns the squared distance between the two colors.
    public int distanceSquaredTo(ColorHSB that) {
        if (that == null)
            throw new IllegalArgumentException("argument shouldn't be null!");
        int dh = hue - that.hue;
        int ds = sat - that.sat;
        int db = bri - that.bri;
        int x = 360 - Math.abs(dh);
        int rtrn = Math.min((dh * dh), (x * x)) + (ds * ds) + (db * db);
        return rtrn;
    }

    public static void main(String[] args) {
        int h1 = Integer.parseInt(args[0]);
        int s1 = Integer.parseInt(args[1]);
        int b1 = Integer.parseInt(args[2]);
        int f = Integer.MAX_VALUE;
        String colorName = "";
        ColorHSB colorHSB1 = new ColorHSB(h1, s1, b1);
        while (!StdIn.isEmpty()) {
            String string = StdIn.readString();
            int h2 = StdIn.readInt();
            int s2 = StdIn.readInt();
            int b2 = StdIn.readInt();
            ColorHSB colorHSB2 = new ColorHSB(h2, s2, b2);
            if (colorHSB1.distanceSquaredTo(colorHSB2) < f) {
                f = colorHSB1.distanceSquaredTo(colorHSB2);
                colorName = string + " " + colorHSB2;
            }
        }
        System.out.println(colorName);
    }
}