JAVA：計算字符串中的每個單詞，並計算單詞中的每個字母

Question

因此，我有一個Java作業，其中有一個帶短語的String。 我需要計算該短語具有的每個單詞，然后計算每個單詞有多少個字母。 我已經能夠使用Tokenizer將短語分解為單詞，然后使用.countTokens（）計數並打印單詞的數量。 但是，我無法計算每個單詞中的字母。

基本上，輸出應該是這樣的：

“ Nihil veritas est”
字數：3
Nihil：5個字母
Veritas：7個字母
Est：3個字母

到目前為止，這是我的代碼：

public class words {
public static void main(String[] args){
    Scanner in = new Scanner(System.in);
    System.out.println("Please type a phrase.");
    String phrase= in.nextLine();
    StringTokenizer stoken = new StringTokenizer(phrase);
    System.out.println("Your phrase has "+stoken.countTokens()+"words");


}

Answer 1

嘗試這個：

public class words {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        System.out.println("Please type a phrase.");
        String phrase= in.nextLine();

        String[] words = phrase.split(" ");

        System.out.println("The number of words is:"+words.length);

        for(int i=0; i<words.length; i++){
            System.out.println(words[i]+" is "+words[i].length()+" letters long.");

        }
    }
}

此代碼使用split()代替Tokenizer 。 在我看來，這似乎更容易。

Answer 2

嘗試這個：

import java.util.Scanner;
import java.util.StringTokenizer;

public class WordCount {

 public static void main(String[] args) {

    Scanner in = new Scanner(System.in);
    System.out.println("PLease enter your phrase");

    String phrase = in.nextLine();
    StringTokenizer st = new StringTokenizer(phrase);
    System.out.println("Your phrase has " + st.countTokens() + " words");
    // Loop thorough to count number of letters in each word.
    while (st.hasMoreTokens()) {
        String tokenName = st.nextToken();
        System.out.println(tokenName + ": has  " + tokenName.length() + " letters");
    }

 }

}

Answer 3

這是我為您解決的問題：

public static void main(String[]args) {
    Scanner in = new Scanner(System.in);
    System.out.println("Please type a phrase.");
    String phrase= in.nextLine();

    // get an array each having a word using split
    String[]words = phrase.split(" ");

    //print count of words?
    System.out.println("Words: "+words.length);

    //loop over the words
    for(int i = 0; i < words.length; i++)
    {
        System.out.println(words[i]+": "+words[i].length()+" letters");
    }  
} 

Answer 4

public class wordCount 
{
    public static void main(String[] args)
    {
    Scanner sc= new Scanner(System.in);
    System.out.println(" Enter a String1");
    String str=sc.nextLine();
    System.out.println(" Entered String : ");
    System.out.println(str);
    //logic
    char ch[]=str.toCharArray();
    str="";
    int count=0;
    for (int i = 0; i < ch.length; i++) 
    {
        if(ch[i]!=' ')
        {
            str=str+ch[i];
            count++;
        }
        else if(ch[i-1]!=' ')
        {
            /*str=str+"-->"+count +" ";*/
            System.out.println(str+"--->"+count);
            count=0;
            str="";
        }
    }
    System.out.println(str+"--->"+count);

sc.close();
    }
}