class ST
{
    private String star[];
    private int index =0;
    private int numtokens;

    public String nextToken()
    {
        index++;
        return star[index-1];
    }


    public int countTokens()
    {

        return numtokens-index;
    }

    public boolean hasMoreTokens()
    {
        if(numtokens-index>0)
        {
            return true;
        }
        else
        {
            return false;

         }
     }


    public boolean isDelim(char c3, String str)
    {

        for(int i =0; i<str.length();i++)
        {
            if(c3 == str.charAt(i))
            {
                return true;
            }
        }
            return false;
    }


    public ST(String str)
    {
        this(str," ");
    }


    public ST(String str, String delim)
    {
        star = new String[50];
        String s;

        int start =0;
        int end =1;
        char c1;
        char c2;

        for(int i =0;i<str.length()-1;i++)
        {

            s=str.substring(i,i+2);
            c1 = s.charAt(0);
            c2 = s.charAt(1);

            if((isDelim(c1,delim) && isDelim(c2,delim)==false))
            {
                start = i+1;
            }
            else if((isDelim(c2,delim))&&(isDelim(c1,delim)==false))
            {
                end = i+1;
                star[numtokens] = str.substring(start,end);
                numtokens++;
            }
          }

            if(end< start)
            {
                star[numtokens] = str.substring(start,str.length());
                numtokens++;
            }
         }
       }


public class ZachLab6
{


    public static void main(String argv[])
    {

        String str;


        str = "Hello World";
        ST stok= new ST(str);

        System.out.println("[" + str + "]");

        while (stok.hasMoreTokens())
        {
            System.out.println("#tokens = " + stok.countTokens());
            System.out.println("token: " + stok.nextToken());
        }
        System.out.println("#tokens = " + stok.countTokens());
        System.out.println("token: " + stok.nextToken());
        System.out.println("\n\n");


        str = "    Hello    world   ";
        stok= new ST(str);


        while (stok.hasMoreTokens())
        {
            System.out.println("#tokens = " + stok.countTokens());
            System.out.println("token: " + stok.nextToken());
        }
        System.out.println("#tokens = " + stok.countTokens());
        System.out.println("\n\n");

    //3)
        str = "root:x:0:0:root:/root:/bin/bash";
        stok = new ST(str, ":");

        System.out.println(str);


        int n = stok.countTokens();
        System.out.println("#tokens = " + n);

        for (int i=0; i<n; i++)
        {
            System.out.println("token " + stok.nextToken());
        }
       System.out.println("username = " + stok.nextToken());
        System.out.println("password = " + stok.nextToken());
        System.out.println("userid   = " + stok.nextToken());
        System.out.println("groupid  = " + stok.nextToken());
        System.out.println("comment  = " + stok.nextToken());
        System.out.println("home dir = " + stok.nextToken());
        System.out.println("shell    = " + stok.nextToken());
        System.out.println("\n\n");

    //4)
        str = "Hello-world.It is!a nice day,today";
        stok= new ST(str,"-.!, ");

        System.out.println(str);

        while (stok.hasMoreTokens())
        {
            System.out.println("#tokens = " + stok.countTokens());
            System.out.println("token: " + stok.nextToken());
        }
        System.out.println("#tokens = " + stok.countTokens());
    }
}