Question

JAVA
How do I write a code that receive a string, detect the length of each token with array, save the frequency of the length and print it? If the token length is longer than 10, the length is considered to be 0. If the frequency of the lengtg is 0 the information will not be printed

ex)

If the input is "Count the length of the token tokenlongerthanten"

the output will be

Length0 : 1
Length2 : 1
Length3 : 2
Length5 : 3

Answer 1

I think you want the output to be length of token(0-10) and their frequency. This string  "Count the length of the token tokenlongerthanten" should result in output

length0-> tokenlongerthanten

length2-> of

length3-> the,the

length5-> count, token

length6-> length

I've used string tokenizer class for this operation. It extracts word by word from string as tokens. This extraction is defined by delimiter(to separate words)(here space is used). I've commented the code for better understanding.

Code

import java.util.ArrayList;

import java.util.StringTokenizer;

public class stringToken {

    //this function prints the desired output as in question

    static void findLength(String s){

        //frequency array

        int []freq=new int[11];

        //tokenizer set to input string which extract word seperated by space

        StringTokenizer tokenizer=new StringTokenizer(s," ");

        //while there are words left in string

        while(tokenizer.hasMoreTokens()){

            //extract word

            String token=tokenizer.nextToken();

            //check length

            if(token.length()>10)   //length greater than 10

                freq[0]++;

            else freq[token.length()]++;    //length smaller than 10

        }

        //printing output

        for(int i=0;i<=10;i++){

            if(freq[i]>0)

            System.out.println("Length"+i+":"+freq[i]);

        }

    }

    public static void main(String[] args) {

        String s="Count the length of the token tokenlongerthanten";

        findLength(s);  //calling function

    }

}

Output

For indentation purpose

.