Skip to main content

Java String Tokens | Regex expression

Given a string, , matching the regular expression [A-Za-z !,?._'@]+, split the string into tokens. We define a token to be one or more consecutive English alphabetic letters. Then, print the number of tokens, followed by each token on a new line.
Note: You may find the String.split method helpful in completing this challenge.
Input Format
A single string, .
Constraints
  •  is composed of any of the following: English alphabetic letters, blank spaces, exclamation points (!), commas (,), question marks (?), periods (.), underscores (_), apostrophes ('), and at symbols (@).
Output Format
On the first line, print an integer, , denoting the number of tokens in string  (they do not need to be unique). Next, print each of the  tokens on a new line in the same order as they appear in input string .
Sample Input
He is a very very good boy, isn't he?
Sample Output
10
He
is
a
very
very
good
boy
isn
t
he
Explanation
We consider a token to be a contiguous segment of alphabetic characters. There are a total of  such tokens in string , and each token is printed in the same order in which it appears in string .
import java.io.*;
import java.util.*;

public class Solution {

   public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s = scan.nextLine();
        // Write your code here.
       // s = s.replaceAll("\\", "");
        s=s.trim();
        if(s.isEmpty()) {
         System.out.println(0);
        }else {
         
            String[] a = s.split("[ !,?._'@]+");
            System.out.println(a.length);
            s=s.replaceAll("[ !,?._'@]+", "\n");
            System.out.println(s);
            
        }
        scan.close();
        
    }
}

Labels:

Comments

Post a Comment

Popular posts from this blog

Java Currency Formatter Solution

Given a  double-precision  number,  , denoting an amount of money, use the  NumberFormat  class'  getCurrencyInstance  method to convert   into the US, Indian, Chinese, and French currency formats. Then print the formatted values as follows: US: formattedPayment India: formattedPayment China: formattedPayment France: formattedPayment where   is   formatted according to the appropriate  Locale 's currency. Note:  India does not have a built-in Locale, so you must  construct one  where the language is  en  (i.e., English). Input Format A single double-precision number denoting  . Constraints Output Format On the first line, print  US: u  where   is   formatted for US currency.  On the second line, print  India: i  where   is   formatted for Indian currency.  On the third line...
7 comments
Read more

Java Stdin and Stdout II Code

In this challenge, you must read an  integer , a  double , and a  String  from stdin, then print the values according to the instructions in the  Output Format  section below. To make the problem a little easier, a portion of the code is provided for you in the editor. Note:  We recommend completing  Java Stdin and Stdout I  before attempting this challenge. Input Format There are three lines of input: The first line contains an  integer . The second line contains a  double . The third line contains a  String . Output Format There are three lines of output: On the first line, print  String:  followed by the unaltered  String  read from stdin. On the second line, print  Double:  followed by the unaltered  double  read from stdin. On the third line, print  Int:  followed by the unaltered  integer  read from stdin. To make the pr...
2 comments
Read more

Java Date and Time Solution | Returns the day on that date.

The  Calendar class  is an abstract class that provides methods for converting between a specific instant in time and a set of calendar fields such as YEAR, MONTH, DAY_OF_MONTH, HOUR, and so on, and for manipulating the calendar fields, such as getting the date of the next week. You are given a date. To simplify your task, we have provided a portion of the code in the editor. You just need to write the method,  , which returns the  day  on that date. For example, if you are given the date  , the method should return   as the day on that date. Input Format A single line of input containing the space separated month, day and year, respectively, in      format. Constraints Output Format Output the correct day in capital letters. Sample Input 08 05 2015 Sample Output WEDNESDAY Explanation The day on August  th    was  WEDNESDAY . impo...
8 comments
Read more