i have done

src/main/java/core/basesyntax/impl/StorageImpl.java

@@ -1,19 +1,53 @@
 package core.basesyntax.impl;
 
+import java.util.Objects;
+
 import core.basesyntax.Storage;
 
 public class StorageImpl<K, V> implements Storage<K, V> {
+
+    private final int MAX = 10;
+
+    Object[] keys = new Object[MAX];
+    Object[] values = new Object[MAX];
+    int size = 0;
+
     @Override
     public void put(K key, V value) {
+
+        for (int i = 0; i < size; i++) {
+
+            if (Objects.equals(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 (Objects.equals(keys[i], key)) {
+
+                return (V) values[i];
+            }
+
+        }
         return null;
+
     }
 
     @Override
     public int size() {
-        return -1;
+        return size;
     }
 }