From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Helvetica Volubi <suisuroru@blue-millennium.fun>
Date: Tue, 28 Jul 2026 15:09:06 +0800
Subject: [PATCH] Anonymous Object: Lithium optimized collections for
 WeightedList

As requested by the original author, this patch will be anonymous and hide the original commit address.
This patch is used with permission from the original author.
Licensed under: GPL-3.0 (https://www.gnu.org/licenses/gpl-3.0.html)

diff --git a/net/minecraft/util/random/WeightedList.java b/net/minecraft/util/random/WeightedList.java
index a8481259e42aa116e29bccd1e30fdfd91f51a8cc..49a558d6021db2d57eb2596206ea459fd33485e0 100644
--- a/net/minecraft/util/random/WeightedList.java
+++ b/net/minecraft/util/random/WeightedList.java
@@ -23,7 +23,7 @@ public class WeightedList<E> { // Paper - non-final
     private final WeightedList.@Nullable Selector<E> selector;
 
     protected WeightedList(final List<? extends Weighted<E>> items) { // Paper - protected
-        this.items = List.copyOf(items);
+        this.items = items.size() > 4 ? new net.caffeinemc.mods.lithium.common.util.collections.HashedReferenceList(items) : new it.unimi.dsi.fastutil.objects.ReferenceArrayList<>(items); // Anonymous - Lithium optimized collections for WeightedList
         this.totalWeight = WeightedRandom.getTotalWeight(items, Weighted::weight);
         if (this.totalWeight == 0) {
             this.selector = null;