homework solution

src/main/java/core/basesyntax/FileWork.java

@@ -1,8 +1,41 @@
 package core.basesyntax;
 
+import java.io.BufferedReader;
+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;
+        char targetLetter = 'w';
+        StringBuilder stringBuilder = new StringBuilder();
+        try (BufferedReader reader = new BufferedReader(new FileReader(fileName))) {
+            String value;
+            while ((value = reader.readLine()) != null) {
+                stringBuilder.append(value).append(" ");
+            }
+        } catch (IOException e) {
+            throw new RuntimeException("Can't read the file", e);
+        }
+        String fileContent = stringBuilder.toString().toLowerCase();
+        String[] arrayOfWords = fileContent.split("\\s+");
+        int count = 0;
+        for (String word : arrayOfWords) {
+            if (word.toLowerCase().startsWith(String.valueOf(targetLetter))) {
+                count++;
+            }
+        }
+        String[] resultArray = new String[count];
+        int index = 0;
+        for (String word : arrayOfWords) {
+            if (word.toLowerCase().startsWith(String.valueOf(targetLetter))) {
+                while (word.length() > 0 && !Character.isLetter(word.charAt(word.length() - 1))) {
+                    word = word.substring(0, word.length() - 1);
+                }
+                resultArray[index++] = word;
+            }
+        }
+        Arrays.sort(resultArray);
+        return resultArray;
     }
 }