From 4a27eb03386843ac7fd99444d64da725fe9525f5 Mon Sep 17 00:00:00 2001
From: Haifeng Li <haifeng.hli@gmail.com>
Date: Wed, 25 Dec 2024 20:24:57 -0500
Subject: [PATCH] Comparator.comparingDouble()

---
 base/src/main/java/smile/graph/NearestNeighborGraph.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/base/src/main/java/smile/graph/NearestNeighborGraph.java b/base/src/main/java/smile/graph/NearestNeighborGraph.java
index 8a6987366..03da54dc5 100644
--- a/base/src/main/java/smile/graph/NearestNeighborGraph.java
+++ b/base/src/main/java/smile/graph/NearestNeighborGraph.java
@@ -438,7 +438,7 @@ private static int[][] generateCandidates(List<PriorityQueue<Neighbor>> heapList
         int[][] result = new int[n][];
         for (int i = 0; i < n; i++) {
             List<Neighbor> list = new ArrayList<>(candidates.get(i));
-            list.sort((o1, o2) -> Double.compare(o1.distance, o2.distance));
+            list.sort(Comparator.comparingDouble(o -> o.distance));
             result[i] = list.stream().limit(maxCandidates).mapToInt(neighbor -> neighbor.index).toArray();
         }
         return result;