package trak.datastructures;
import java.util.*;
import java.lang.Character;

public class TrakCheck {

    private TrakStack stack;
    private ArrayList<Object> list;

    public TrakCheck () {

        this.stack = new TrakStack ();
        this.list = new ArrayList<Object>();

    }

    public boolean check (String input) {

        for (int i=0; i < input.length(); i++){
             list.add (input.charAt(i));
    }
        for (int j=0; j < list.size(); j++) {
            if (isLetterOrDigit(list.get(j)) )
        }
    }
}