Help please

Question about the task

Archived

I have no idea what am I doing wrong. The output is exactly the same as in the example when I test the code. I had to miss something… I tried without the try, catch statements in the main method, but it still doesn't verify. I also tried without the method correctLine(String line) and put all the code into the main method, but the result is the same...

1. In a static block, initialize map with (number, word) pairs from 0 to 12 inclusive.
For example, (0, "zero"), (1, "one"), (2, "two")
2. Read the file name from the console, and then read the contents of the file.
3. Use map to replace all of the numbers with words.
4. Display the result.
5. Close the streams.

Example file data:
This costs 1 dollar, but this is 12. The variable is called file1. 110 is a number.

Example console output:
This costs one dollar, but this is twelve. The variable is called file1. 110 is a number.

Requirements:

The Solution class must have a public static Map<Integer, String> field called words that is initialized immediately.
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 write all of the lines from the file to the console, but any numbers must be replaced with the corresponding words in map.
The Solution class must have a static block that adds thirteen pairs to map.

package com.codegym.task.task19.task1924; import java.io.*; import java.util.HashMap; import java.util.Map; /* Replacing numbers */ public class Solution { public static Map<Integer, String> map = new HashMap<Integer, String>(); static { String[] list = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten", "eleven", "twelve"}; for (int i = 0; i < list.length; i++) { map.put(i, list[i]); } } public static void main(String[] args) { try { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); String fileName = bufferedReader.readLine(); BufferedReader reader = new BufferedReader(new FileReader(fileName)); while (reader.ready()) { String line = reader.readLine(); correctLine(line); } bufferedReader.close(); reader.close(); } catch (Exception e) { e.printStackTrace(); } } private static void correctLine(String line) { String[] list = line.split(" "); StringBuilder builder = new StringBuilder(); for (int i = 0; i < list.length; i++) { String y = list[i].replaceAll("[a-zA-Z0-9]", ""); list[i] = list[i].replaceAll("[^a-zA-Z0-9]", ""); try { int x = Integer.parseInt(list[i]); if (x >= 0 && x <= 12) { list[i] = map.get(x); } } catch (Exception e) { } builder.append(list[i]); builder.append(y); builder.append(" "); } System.out.println(builder.toString().trim()); } }

Comments (3)

Popular
New
Old

You must be signed in to leave a comment

ジョーンズJ

Level 47 , United States

28 January 2022, 18:21

package com.codegym.task.task19.task1924;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

/*
Replacing numbers

*/

public class Solution {
    public static Map<Integer, String> map = new HashMap<>();

    static {
        map.put(12, "twelve");
        map.put(11, "eleven");
        map.put(10, "ten");
        map.put(9, "nine");
        map.put(8, "eight");
        map.put(7, "seven");
        map.put(6, "six");
        map.put(5, "five");
        map.put(4, "four");
        map.put(3, "three");
        map.put(2, "two");
        map.put(1, "one");
        map.put(0, "zero");
    }

    public static void main(String[] args) {
        String fileName = null;

        try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
            fileName = reader.readLine();
        } catch (IOException ignored) {
        }

        String fileLine;

        try (BufferedReader in = new BufferedReader(new FileReader(fileName))) {
            while ((fileLine = in.readLine()) != null) {
                for (Map.Entry<Integer, String> entry : map.entrySet()) {
                    fileLine = fileLine.replaceAll("\\b" + entry.getKey() + "\\b", entry.getValue());
                }
                System.out.println(fileLine);
            }
        } catch (IOException ignored) {
        }
    }
}

Jorge Sosa

Level 20 , Madrid, Spain

13 July 2019, 22:16

This is a tough one. Your solution moves any hyphen to the end of the word (for example, "file-1" becomes "file1-").

Sara

Level 23 , Maribor, Slovenia

14 July 2019, 10:17

Wow, I didn't even notice that… thanks for the help. I solved the task by first splitting the words by space and then by splitting every word by non-word characters, like this: private static void correctLine(String line) { String[] list = line.split(" "); StringBuilder builder = new StringBuilder(); for (int i = 0; i < list.length; i++) { String y = list[i]; String[] newLine = y.split("\\s+|(?=[,.])"); for (int j = 0; j < newLine.length; j++) { String h = newLine[j]; Scanner scanner = new Scanner(h); if (scanner.hasNextInt()) { int number = Integer.parseInt(h); if (map.containsKey(number)) { newLine[j] = map.get(number); builder.append(newLine[j]); } else { builder.append(h); } } else { builder.append(h); } } builder.append(" "); System.out.println(builder.toString().trim()); } }