From d88b6bd1346552b4e69ed96e414c5eba813b6a21 Mon Sep 17 00:00:00 2001
From: Oleh Ridchenko <olehridchenko@gmail.com>
Date: Thu, 26 Sep 2024 16:28:54 +0300
Subject: [PATCH] filter out only the words starting with w

---
 src/main/java/core/basesyntax/FileWork.java | 42 ++++++++++++++++++++-
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/src/main/java/core/basesyntax/FileWork.java b/src/main/java/core/basesyntax/FileWork.java
index ba2d8396..1abe7663 100644
--- a/src/main/java/core/basesyntax/FileWork.java
+++ b/src/main/java/core/basesyntax/FileWork.java
@@ -1,8 +1,46 @@
 package core.basesyntax;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Arrays;
+
 public class FileWork {
     public String[] readFromFile(String fileName) {
-        //write your code here
-        return null;
+        StringBuilder stringBuilder = new StringBuilder();
+        File myFile = new File(fileName);
+
+        try (BufferedReader bufferedWriter = new BufferedReader(new FileReader(myFile))) {
+            String line;
+            while ((line = bufferedWriter.readLine()) != null) {
+                stringBuilder.append(line.toLowerCase()).append(" ");
+            }
+        } catch (IOException e) {
+            throw new RuntimeException("Can't run this file", e);
+        }
+
+        String[] splitArray = stringBuilder.toString().split("\\W+");
+
+        int count = 0;
+        for (String word : splitArray) {
+            if (word.startsWith("w")) {
+                count++;
+            }
+        }
+
+        if (count == 0) {
+            return new String[0];
+        }
+
+        String[] sortedArray = new String[count];
+        int index = 0;
+        for (int i = 0; i < splitArray.length; i++) {
+            if (splitArray[i].startsWith("w")) {
+                sortedArray[index++] = splitArray[i];
+            }
+        }
+        Arrays.sort(sortedArray);
+        return sortedArray;
     }
 }