implement FileWork method

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

@@ -1,8 +1,39 @@
 package core.basesyntax;
 
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.util.Arrays;
+
 public class FileWork {
     public String[] readFromFile(String fileName) {
-        //write your code here
-        return null;
+        File file = new File(fileName);
+        String result = "";
+        try {
+            result = Files.readString(file.toPath());
+        } catch (IOException e) {
+            throw new RuntimeException("Can't find the file");
+        }
+
+        String[] fromFile = result.split("\\W+");
+        int length = 0;
+        for (int i = 0; i < fromFile.length; i++) {
+            if (fromFile[i].toLowerCase().startsWith("w")) {
+                length++;
+            }
+        }
+
+        int index = 0;
+        String[] resultArray = new String[length];
+        for (int i = 0; i < fromFile.length; i++) {
+            if (fromFile[i].toLowerCase().startsWith("w")) {
+                resultArray[index] = fromFile[i].toLowerCase();
+                index++;
+            }
+        }
+
+        Arrays.sort(resultArray);
+
+        return resultArray;
     }
 }