From 8a6059268374270b1cfdd0a4a8c31180ab2e270a Mon Sep 17 00:00:00 2001
From: gfhe <90042648+gfhe@users.noreply.github.com>
Date: Tue, 22 Nov 2022 11:05:14 +0800
Subject: [PATCH] init each level connections problem

At line 215 of `HnswIndex.java`,  `randomLevel==0` may not meet expectations, which will reault in `maxM0` not working.

```
        for (int level = 0; level <= randomLevel; level++) {
            int levelM = level == 0 ? maxM0 : maxM;
            connections[level] = new IntArrayList(levelM);
        }
```
---
 .../src/main/java/com/github/jelmerk/knn/hnsw/HnswIndex.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hnswlib-core/src/main/java/com/github/jelmerk/knn/hnsw/HnswIndex.java b/hnswlib-core/src/main/java/com/github/jelmerk/knn/hnsw/HnswIndex.java
index cfbe6f10..fe3ddc89 100644
--- a/hnswlib-core/src/main/java/com/github/jelmerk/knn/hnsw/HnswIndex.java
+++ b/hnswlib-core/src/main/java/com/github/jelmerk/knn/hnsw/HnswIndex.java
@@ -212,7 +212,7 @@ public boolean add(TItem item) {
         IntArrayList[] connections = new IntArrayList[randomLevel + 1];
 
         for (int level = 0; level <= randomLevel; level++) {
-            int levelM = randomLevel == 0 ? maxM0 : maxM;
+            int levelM = level == 0 ? maxM0 : maxM;
             connections[level] = new IntArrayList(levelM);
         }