I need a program for a wordcount [closed]

问题

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Closed 7 years ago.

I need to figure out how to make a program that counts the words in a sentence that the user inputs. The user also inputs the length that each word must be. So, if the user inputs 5 letter words, and the sentence includes a 4 letter word; that word won't be counted.

This is all I have...

public class wordcount {
  public static void main(String[] args) {
   int length = IO.readInt();
   String sentence = IO.readString();
   int full = sentence.length();
   int wordcount = 0;

   for(int i = 0; i < length; i++){
   }
   System.out.print(wordcount);
   }
 }

回答1:

return sentence.split("\\s+").length;

回答2:

This will read counts for an input line.

public static void main(String[] args) {
    Scanner scanner = new Scanner( System.in );
    int length = scanner.nextInt();
    String sentence = scanner.nextLine();
    scanner.close();

    int wordcount = 0;
    String[] words = sentence.split(" ");
    for(int i = 0; i < words.length; i++){
       if(words[i].length() >= length ){
          wordcount++;
       }
   }
   System.out.print(wordcount);
}

}

来源：https://stackoverflow.com/questions/12945357/i-need-a-program-for-a-wordcount