From daa711d5a3d7627afb990e42e45e526a2d15a075 Mon Sep 17 00:00:00 2001
From: maibin <michal.aibin@gmail.com>
Date: Mon, 19 Dec 2016 22:38:56 +0100
Subject: [PATCH] Simulated Annealing fix (#910)

* @Async and Spring Security

* @Async with SecurityContext propagated

* Spring and @Async

* Simulated Annealing algorithm

* Simulated Annealing algorithm

* Rebase

* Rebase

* SA further fixes
---
 .../main/java/com/baeldung/algorithms/SimulatedAnnealing.java | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/core-java/src/main/java/com/baeldung/algorithms/SimulatedAnnealing.java b/core-java/src/main/java/com/baeldung/algorithms/SimulatedAnnealing.java
index cf1dad098e..f2db61c3b1 100644
--- a/core-java/src/main/java/com/baeldung/algorithms/SimulatedAnnealing.java
+++ b/core-java/src/main/java/com/baeldung/algorithms/SimulatedAnnealing.java
@@ -17,11 +17,9 @@ public class SimulatedAnnealing {
             if (t > 0.1) {
                 currentSolution.swapCities();
                 double currentDistance = currentSolution.getDistance();
-                if (currentDistance == 0)
-                    continue;
                 if (currentDistance < bestDistance) {
                     bestDistance = currentDistance;
-                } else if (Math.exp((currentDistance - bestDistance) / t) < Math.random()) {
+                } else if (Math.exp((bestDistance - currentDistance) / t) < Math.random()) {
                     currentSolution.revertSwap();
                 }
                 t *= coolingRate;