fix: handle deleted slots

second-part/hw-01/src/app/src/main/java/org/example/MyHashMap.java

@@ -1,5 +1,7 @@
 package org.example;
 
+import java.util.Objects;
+
 public class MyHashMap<Key, Value> {
 
   private Key[] keys;
@@ -24,11 +26,22 @@ public class MyHashMap<Key, Value> {
       resize();
     }
 
-    int index = findEmptyIndex(key);
-    if (keys[index] != null) {
-      Value oldValue = values[index];
-      values[index] = value;
-      return oldValue;
+    int index = index(key);
+    int start = index;
+
+    while (keys[index] != null || deleted[index]) {
+      if (!deleted[index] && Objects.equals(keys[index], key)) {
+        Value oldValue = values[index];
+        values[index] = value;
+        return oldValue;
+      }
+
+      index = (index + 1) % keys.length;
+
+      if (index == start) {
+        resize();
+        return put(key, value);
+      }
     }
 
     keys[index] = key;
@@ -58,7 +71,7 @@ public class MyHashMap<Key, Value> {
     int start = index;
 
     while (keys[index] != null || deleted[index]) {
-      if (!deleted[index] && java.util.Objects.equals(keys[index], key)) {
+      if (!deleted[index] && Objects.equals(keys[index], key)) {
         return index;
       }
 
@@ -72,28 +85,8 @@ public class MyHashMap<Key, Value> {
     return -1;
   }
 
-  private int findEmptyIndex(Key key) {
-    int index = index(key);
-    int start = index;
-
-    while (keys[index] != null && !deleted[index]) {
-      if (java.util.Objects.equals(keys[index], key)) {
-        return index;
-      }
-
-      index = (index + 1) % keys.length;
-
-      if (index == start) {
-        resize();
-        return findEmptyIndex(key);
-      }
-    }
-
-    return index;
-  }
-
   private int index(Key key) {
-    return Math.floorMod(key == null ? 0 : key.hashCode(), keys.length);
+    return Math.floorMod(key.hashCode(), keys.length);
   }
 
   private void resize() {