Discussion on Java String Tokens Challenge

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1 day ago+ 0 comments

       Scanner scan = new Scanner(System.in);
        String s = scan.nextLine();
        // Write your code here.
        scan.close();
        
        s = s.trim();
        
        if (s.isEmpty()) 
        {
            System.out.println(0);
            return;    
        }
        
        String[] strs = s.split("[^A-Za-z0-9]+");
        
        System.out.println(strs.length);
        
        for (String string : strs) 
        {
            System.out.println(string);    
        }

3 days ago+ 0 comments

    Scanner scan = new Scanner(System.in);
    String s = scan.nextLine().trim();

    if (s.isEmpty()) {
        System.out.println("0");
    } else {
        String[] toReplace = {" ", ",", "'", "?", "@", "!", "[", "]", "-", "_", "+", "."};

        for (String toCarry: toReplace) {
            if (s.contains(toCarry)) {
                s = s.replace(toCarry, " ");
            }
        }

        String[] sArray = s.split(" ");

        ArrayList<String> sArrayList = new ArrayList<>();

        for (String sArray1: sArray) {
            sArrayList.add(sArray1);
        }

        for (int i=0; i<sArrayList.size(); i++) {
            while (sArrayList.get(i).isEmpty()) {
                sArrayList.remove(i);
            }
        }

        System.out.println(sArrayList.size());

        for (String sArray3: sArrayList) {
            System.out.println(sArray3);
        }
    }

    scan.close();

3 days ago+ 0 comments

	Scanner scan = new Scanner(System.in);
        String s = scan.nextLine().trim();
        
        if (!s.isEmpty()) {
            String[] sArray = s.split("[^A-Za-z0-9]+");
        
            System.out.println(sArray.length);
            
            for (String temp: sArray) {
                System.out.println(temp);
            }
        } else {
            System.out.println("0");
        }
        
        scan.close();

3 days ago+ 0 comments

why is the string.trim method used in this question i have tried running the code with the same test cases as custom input that failed without using the method and the result is exactly the same. Can anyone please explain?

2 weeks ago+ 0 comments

I feel this useDelimiter is also a good fit for this :

import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        sc.useDelimiter("[^a-zA-Z]+");
        String str = "";
        int cnt = 0;
        while(sc.hasNext()) {
            cnt++;
            str = str + "\n" + sc.next();
        }
        System.out.println(cnt + str);
        sc.close();
    }
}

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