From 012954ebbf67b5afba8ef74c07e434852be90e44 Mon Sep 17 00:00:00 2001
From: Lucas Hosseini <lucas.hosseini@gmail.com>
Date: Tue, 23 Apr 2019 16:52:39 +0200
Subject: [PATCH] Fix HNSW.fill_with_random_links. (#801)

---
 HNSW.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/HNSW.cpp b/HNSW.cpp
index b3d76dc86..96db6af01 100644
--- a/HNSW.cpp
+++ b/HNSW.cpp
@@ -173,7 +173,7 @@ void HNSW::fill_with_random_links(size_t n)
   int max_level = prepare_level_tab(n);
   RandomGenerator rng2(456);
 
-  for (int level = max_level - 1; level >= 0; level++) {
+  for (int level = max_level - 1; level >= 0; --level) {
     std::vector<int> elts;
     for (int i = 0; i < n; i++) {
       if (levels[i] > level) {