diff --git a/src/main/java/core/basesyntax/impl/StorageImpl.java b/src/main/java/core/basesyntax/impl/StorageImpl.java
index 455a7b080..3b1740b1f 100644
--- a/src/main/java/core/basesyntax/impl/StorageImpl.java
+++ b/src/main/java/core/basesyntax/impl/StorageImpl.java
@@ -3,17 +3,47 @@
 import core.basesyntax.Storage;
 
 public class StorageImpl<K, V> implements Storage<K, V> {
+    private static final int MAX_SIZE = 10;
+    private Object[] keys;
+    private Object[] values;
+    private int size;
+
+    public StorageImpl() {
+        keys = new Object[MAX_SIZE];
+        values = new Object[MAX_SIZE];
+        size = 0;
+    }
+
     @Override
     public void put(K key, V value) {
+        for (int i = 0; i < size; i++) {
+            if (keysEqual(keys[i], key)) {
+                values[i] = value;
+                return;
+            }
+        }
+        keys[size] = key;
+        values[size] = value;
+        size++;
     }
 
     @Override
     public V get(K key) {
+        for (int i = 0; i < size; i++) {
+            if (keysEqual(key, keys[i])) {
+                return (V) values[i];
+            }
+        }
         return null;
     }
 
     @Override
     public int size() {
-        return -1;
+        return size;
+    }
+
+    private boolean keysEqual(Object keyInStorage, Object keyToFind) {
+        return keyInStorage == keyToFind
+                || (keyInStorage != null && keyInStorage.equals(keyToFind));
     }
 }