Java String Tokens

Problem Statement :

Given a string, s, 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, s.


 1 <= length of s <= 4.10^5 
 s 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, n, denoting the number of tokens in string  s(they do not need to be unique). Next, print each of the n tokens on a new line in the same order as they appear in input string s.

Solution :


                            Solution in C :

import java.util.*;

class Solution {
    public static void main(String[] args) {
        Scanner scan = new Scanner(;
        String input = scan.nextLine().trim();
        String[] tokens = input.split("[^\\p{Alpha}]+");
        int size = (input.isEmpty()) ? 0 : tokens.length;
        for(String s : tokens) {

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