It is working perfectly but still is not passing

Question about the task

Searching for the right lines

Java Core, Level 9, Lesson 11

Under discussion

Verification system getting annoying

Read a file name from the console.
Display all of the file's lines that contain only 2 words in the words list.
Close the streams.

Example:
words contains the words A, B, and C

Lines:
C B A D // 3 words from words, rejected
A B A D // 3 words from words, rejected
D A D // 1 word from words, rejected
D A B D // 2 words from words, accepted, display it
D A A D // 2 words from words, accepted, display it

Requirements:

The Solution class must have a public static List<String> field called words that is initialized immediately.
The Solution class must have a static block that adds three or more words to the words list.
The program must read the file name from the console (use BufferedReader).
The BufferedReader used for reading input from the console must be closed after use.
The program must read the file's contents (use FileReader).
The file input stream (FileReader) must be closed.
The program should display all of the file's lines that contain only 2 words in the words list.

package com.codegym.task.task19.task1922; import java.util.*; import java.io.*; public class Solution { public static List<String> words = new ArrayList<>(); static { words.add("file"); words.add("view"); words.add("In"); } public static void main(String[] args) throws IOException{ BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); BufferedReader fileReader = new BufferedReader(new FileReader(reader.readLine())); reader.close(); int count = 0; while(fileReader.ready()){ String data = fileReader.readLine(); String [] arr = data.split(" "); ArrayList<String> list = new ArrayList<>(Arrays.asList(arr)); for(int i =0;i<list.size();i++){ for(int j =0;j<words.size();j++){ if(list.get(i).equals(words.get(j))){ count++; } } } if(count == 2){ System.out.println(data); } } fileReader.close(); } }

Comments (3)

Popular
New
Old

You must be signed in to leave a comment

TaoLu

Level 20 , 泾县, China

28 May 2021, 06:14

public static void main(String[] args) throws Exception {
    try (BufferedReader sIn = new BufferedReader(new InputStreamReader(System.in));
         BufferedReader r = new BufferedReader(new FileReader(sIn.readLine()))
    ) {
        for (String line; (line = r.readLine()) != null; ) {
            String[] words = line.split("\\s", 0);
            long count = Solution.words.stream().flatMap(word -> Arrays.stream(words).map(w -> w.equals(word))).filter(Boolean::booleanValue).count();
            if (count == 2) System.out.println(line);
        }

    }
}

Egerd

Level 22 , Tallinn, Estonia

29 April 2020, 10:39

You must set your count 0 again, because if you count is 0 and you read one line and you get count for example 2, then when you read next line your start count is no longer 0 but 2.

Roman

Level 41

7 October 2019, 08:17

Try to test your code with the file:

1234 1234
file view test
test qwerty
file file test

your output isn't correct:

file view test
test qwerty

correct output is:

file view test
file file test

there is a small error in your code