import java.util.List;

public class KonecnyAutomat {

    private List<Token> seznam;

    private enum vycetTokenu {

        OPERAND, OPERATOR, ZAVORKY
    }

    private enum vycetStavu {

        START, OPERAND, OPERATOR, ZAVORKY, TECKA
    }

    private class Token {

        vycetTokenu druh;
        String data;

        public Token(vycetTokenu druh, String data) {
            this.druh = druh;
            this.data = data;
        }
    }

    private Token vratToken(vycetTokenu druh, String data) {
        return new Token(druh, data);
    }

    private boolean jeCislo(String str) {
        return str == "0" || str == "1" || str == "2" || str == "3" || str == "4" || str == "5" || str == "6" || str == "7" || str == "8" || str == "9";
    }

    private boolean jeOperator(String str) {
        return str == "+" || str == "-" || str == "*" || str == "/";
    }

    private boolean jeZavorka(String str) {
        return str == "(" || str == ")";
    }

    private boolean jeTecka(String str){
        return str == ".";
    }

    private void rozsekej(String name) {
        String[] strArray = new String[]{name};
        String tmp = "";
        vycetStavu stav = vycetStavu.START;
        for (String znak : strArray) {
            switch (stav) {
                case START:
                    if (jeCislo(znak)) {
                        stav = vycetStavu.OPERATOR;

                    } else if(jeZavorka(znak)) {
                        stav = vycetStavu.ZAVORKY;

                    }else{
                        throw new NullPointerException("Spatny stav.");
                    }
                    break;
                case OPERAND:
                    if (jeCislo(znak)) {
                        stav = vycetStavu.OPERAND;

                    } else if (jeZavorka(znak)) {
                        stav = vycetStavu.ZAVORKY;

                    } else if (jeOperator(znak)) {
                        stav = vycetStavu.OPERATOR;

                    }else if(jeTecka(znak)){
                        stav = vycetStavu.TECKA;

                    }else{
                        throw new NullPointerException("Spatny stav.");
                    }
                    break;
                case OPERATOR:
                    if (jeCislo(znak)) {
                        stav = vycetStavu.OPERAND;

                    } else if (jeZavorka(znak)) {
                        stav = vycetStavu.ZAVORKY;

                    }else{
                        throw new NullPointerException("Spatny stav.");
                    }
                    break;
                case ZAVORKY:
                    if(jeCislo(znak)){
                        stav = vycetStavu.OPERAND;

                    }else if(jeOperator(znak)){
                        stav = vycetStavu.OPERATOR;

                    }else{
                        throw new NullPointerException("Spatny stav.");
                    }
                    break;
                case TECKA:
                    if(jeCislo(znak)){

                    }else{
                        throw new NullPointerException("Spatny stav.");
                    }
                    break;
            }
        }
    }
}