A string containing text and possibly delimiters has been split into tokens and stored in String[] tokens. Each token is either an open delimiter, a close delimiter, or a substring that is not a delimiter. You will write the method getDelimitersList, which returns an ArrayList containing all the open and close delimiters found in tokens in their original order. Eg) (,), , import java.util.*; public class Delimiters { /** The open and close delimiters **/ private String openDel; private String closeDel; /** Constructs a Delimiters object were open is the open delimiter and close is the * close delimiter. * Precondition: open and close are non-empty strings */ public Delimiters (String open, String close) { openDel = open; closeDel = close; } /** Returns an ArrayList of delimiters from the array tokens, as described in part (a). */ public ArrayList getDelimitersList(String[] tokens) { /* to be implemented in part a */ } public static void main(String[] args) { Delimiters d1 = new Delimiters("(", ")"); String[] tokens = {"(", "x + y", ")", " * 5" }; ArrayList res1 = d1.getDelimitersList(tokens); System.out.println("It should print [(, )] and it prints" + res1); Delimiters d2 = new Delimiters("", ""); String[] tokens2 = {"", "yy", "", "zz", ""}; ArrayList res2 = d2.getDelimitersList(tokens2); System.out.println("It should print [, , ] and it prints " + res2); } }
A string containing text and possibly delimiters has been split into tokens and stored in String[] tokens. Each token is either an open delimiter, a close delimiter, or a substring that is not a delimiter. You will write the method getDelimitersList, which returns an ArrayList containing all the open and close delimiters found in tokens in their original order.
Eg) (,),<q> , </q>
import java.util.*;
public class Delimiters
{
/** The open and close delimiters **/
private String openDel;
private String closeDel;
/** Constructs a Delimiters object were open is the open delimiter and close is the
* close delimiter.
* Precondition: open and close are non-empty strings
*/
public Delimiters (String open, String close)
{
openDel = open;
closeDel = close;
}
/** Returns an ArrayList of delimiters from the array tokens, as described in part (a). */
public ArrayList<String> getDelimitersList(String[] tokens)
{
/* to be implemented in part a */
}
public static void main(String[] args)
{
Delimiters d1 = new Delimiters("(", ")");
String[] tokens = {"(", "x + y", ")", " * 5" };
ArrayList<String> res1 = d1.getDelimitersList(tokens);
System.out.println("It should print [(, )] and it prints" + res1);
Delimiters d2 = new Delimiters("<q>", "</q>");
String[] tokens2 = {"<q>", "yy", "</q>", "zz", "</q>"};
ArrayList<String> res2 = d2.getDelimitersList(tokens2);
System.out.println("It should print [<q>, </q>, </q>] and it prints " + res2);
}
}
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