Done simple linear search

src/phonebook/Main.java

@@ -1,7 +1,31 @@
 package phonebook;
 
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
+
 public class Main {
-    public static void main(String[] args) {
-        System.out.print("Hello world!");
+
+  public static void main(String[] args) throws IOException {
+    List<String> directoryLines = Files.readAllLines(Paths.get("data/directory.txt"));
+    List<String> names = new ArrayList<>();
+    List<String> numbers = new ArrayList<>();
+    directoryLines.forEach(line -> {
+      numbers.add(line.substring(0, line.indexOf(" ")));
+      names.add(line.substring(line.indexOf(" ") + 1));
+    });
+    List<String> requests = Files.readAllLines(Paths.get("data/find.txt"));
+    long start = System.currentTimeMillis();
+    for (String request : requests) {
+      for (int i = 0; i < names.size(); i++) {
+        if (request.equals(names.get(i))) {
+          System.out.printf("%s has number %s\n", request, numbers.get(i));
+          break;
+        }
+      }
     }
+    System.out.printf("To find all entries it taken %d ms\n", System.currentTimeMillis() - start);
+  }
 }