计算句子的单词数？

Question

我想计算我编写代码的每个句子的单词数，但是计算句子中每个单词的字符数这是我的代码

public static void main(String [] args){
    Scanner sca = new Scanner(System.in);
    System.out.println("Please type some words, then press enter: ");
    String sentences= sca.nextLine();
    String []count_words= sentences.split(" ");
    for(String count : count_words){
    System.out.println("number of word is "+count.length());}
}

Answer 1

方法调用 count.length() 返回每个单词的长度，因为循环将每个单词分配给变量 count。（这个变量名很混乱。）

想要句子的字数，需要count_words数组的大小，即count_words.length.

Answer 2

String[] count_words= sentences.split(" "); 将输入参数拆分为 " "，这意味着该数组的长度是单词数。简单地打印出长度。

public static void main(String[] args) {
    Scanner sca = new Scanner(System.in);
    System.out.println("Please type some words, then press enter: ");
    String sentences= sca.nextLine();
    String[] count_words= sentences.split(" ");
    System.out.println("number of word is "+ count_words.length);
}

示例：

oliverkoo@olivers-MacBook-Pro ~/Desktop/untitled folder $ java Main
Please type some words, then press enter: 
my name is oliver
number of word is 4

计算句子的单词数？

count words of sentences?

java

arrays

java-6