update lab5

src/lab5/Letter.java

@@ -1,9 +1,24 @@
 package lab5;
 
+import java.util.Objects;
+
 public class Letter {
     private char symbol;
 
     public Letter(char symbol) {
         this.symbol = symbol;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Letter letter = (Letter) o;
+        return symbol == letter.symbol;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(symbol);
+    }
 }

src/lab5/Main.java

@@ -2,8 +2,17 @@ package lab5;
 
 public class Main {
     public static void main(String[] args) {
+        Word word = new Word("Hello");
+        Word word2 = new Word(new Letter[]{
+            new Letter('H'),
+            new Letter('e'),
+            new Letter('l'),
+            new Letter('l'),
+            new Letter('o'),
+        });
 
-
+        System.out.println(word.equals(word2));
+        System.out.println(word == word2);
 
         System.out.println("Done!");
     }

src/lab5/Word.java

@@ -1,5 +1,7 @@
 package lab5;
 
+import java.util.Arrays;
+
 public class Word {
     private Letter[] letters;
 
@@ -15,4 +17,17 @@ public class Word {
             letters[i] = new Letter(chars[i]);
         }
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Word word = (Word) o;
+        return Arrays.equals(letters, word.letters);
+    }
+
+    @Override
+    public int hashCode() {
+        return Arrays.hashCode(letters);
+    }
 }