Question

In Java write a method called wordCount that accepts a String as its parameter and returns the number of words in the String. A word is a sequence of one or more nonspace characters (any character other than ' '). For example, the call wordCount("hello") should return 1, the call wordCount("how are you?") should return 3, the call wordCount(" this string has wide spaces ") should return 5, and the call wordCount(" ") should return 0.

Answer 1

// here is code in java.

import java.util.*;

// class definition

class Main

{

// method that return the number of words in the string

public static int wordCount(String st)

{

/* split the string by space " " delimiter

and save them into string array*/

String[] no_words=st.split(" ");

// find the length of array

int len= no_words.length;

//return the length

return len;

}

// driver function

public static void main (String[] args) throws java.lang.Exception

{

try{

// scanner object to read input string

Scanner s=new Scanner(System.in);

// string variable

String str;

//ask user to enter string

System.out.print("please enter the string: ");

// read the string from user

str=s.nextLine();

// call the function with string parameter

int tot_words= wordCount(str);

// print the number of word in string

System.out.println("total words in the string is : "+tot_words);

}catch(Exception ex){

return;}

}

}

Step-by-step explanation:

Read a string from user with the help of scanner class object.Call the function

wordCount() with string parameter.Here split the string by space " " delimiter.

Save the words into a string array.Find the length of the array and return it.

Then in the main print the number of words in the input string.

Output:

please enter the string: this string has wide spaces

total words in the string is : 5