Ready for push, passed tests and checkstyle

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

@@ -3,17 +3,50 @@
 import core.basesyntax.Storage;
 
 public class StorageImpl<K, V> implements Storage<K, V> {
+    private static final int MAX_CAPACITY = 10;
+    private K [] key;
+    private V [] value;
+    private int size;
+
+    public StorageImpl() {
+        this.key = (K[]) new Object[MAX_CAPACITY];
+        this.value = (V[]) new Object[MAX_CAPACITY];
+        this.size = 0;
+    }
+
+    private int findIndex(K key) {
+        for (int i = 0; i < size; i++) {
+            if (key == null ? this.key[i] == null : key.equals(this.key[i])) {
+                return i;
+            }
+        }
+        return -1;
+    }
+
     @Override
     public void put(K key, V value) {
+        int index = findIndex(key);
+        if (index != -1) {
+            this.value[index] = value;
+            return;
+        }
+        if (size < MAX_CAPACITY) {
+            this.key[size] = key;
+            this.value[size] = value;
+            size++;
+        } else {
+            System.out.println("Array is full");
+        }
     }
 
     @Override
     public V get(K key) {
-        return null;
+        int index = findIndex(key);
+        return index != -1 ? this.value[index] : null;
     }
 
     @Override
     public int size() {
-        return -1;
+        return size;
     }
 }