字数统计java

Question

So my code is supposed to return the amount of words (words being lengths of letters) and it works except for when i enter anything 0 or less can some pplease help spot the error??

Edited Code:

public class WordCount {
    public static int countWords(String original, int minLength){

        String[] s1 = original.split("\\s+");

        for(int i = 0; i < s1.length; i++){
            s1[i] = s1[i].replaceAll("^\\W]", "");
        }


        int count = 0;
        for(int i = 0; i < s1.length; i++){
            String str = s1[i];
            int len = 0;
            for(int x = 0; x < str.length(); x++){
                char c = str.charAt(x);

                if(Character.isLetter(c) == true){
                    len ++;
                }
            }
            if(len >= minLength){
                count ++;
            }
        }

        return count;
    }

    public static void main(String[] args){
        System.out.println("enter string: ");
        String s = IO.readString();

        System.out.println("min length: ");
        int m = IO.readInt();

        System.out.println(countWords(s, m));


    }

}

Answer 1

Try this :

 String s = original.replaceAll("[\\W]", " ").replaceAll("[\\s]+", " ");

because you have to replace spaces more than 1 here as well.

Answer 2

I would apply a solution that uses a regular expression to process the text.

I prepared a sketch of code, which can be summarized as follows:

String[] words = myString.replaceAll("[^a-zA-Z ]", " ").split("\\s+");

What this code does is to:

• replace whatever is not a letter (since you said just letters) with a space
• split the results on the spaces

The resulting array words contains all the words (ie, sequences of letters) which were contained in the original string.

A full example can be found here . In this example I just print the words as a list. In case you want just the count of words, you just have to return the count of elements in the array.