diff --git a/Algorithm/Clustering/Kmeans.php b/Algorithm/Clustering/Kmeans.php
index 202bea746..11b04c2d0 100644
--- a/Algorithm/Clustering/Kmeans.php
+++ b/Algorithm/Clustering/Kmeans.php
@@ -100,6 +100,18 @@ final class Kmeans
         return $bestCluster;
     }
 
+    /**
+     * Get cluster centroids
+     *
+     * @return array
+     *
+     * @since 1.0.0
+     */
+    public function getCentroids() : array
+    {
+        return $this->clusterCenters;
+    }
+
     /**
      * Generate the clusters of the points
      *
@@ -149,7 +161,7 @@ final class Kmeans
 
                 if ($min !== $point->group) {
                     ++$changed;
-                    $point->group = ($min);
+                    $point->group = $min;
                 }
             }
 
@@ -159,7 +171,7 @@ final class Kmeans
         }
 
         foreach ($clusterCenters as $key => $center) {
-            $center->group = ($key);
+            $center->group = $key;
             $center->name  = (string) $key;
         }
 
diff --git a/Utils/StringUtils.php b/Utils/StringUtils.php
index e3024ee78..011c466ec 100644
--- a/Utils/StringUtils.php
+++ b/Utils/StringUtils.php
@@ -314,10 +314,6 @@ final class StringUtils
         $n1 = \count($from);
         $n2 = \count($to);
 
-        if ($n1 < 1 || $n2 < 1) {
-            throw new \Exception(); // @codeCoverageIgnore
-        }
-
         for ($j = -1; $j < $n2; ++$j) {
             $dm[-1][$j] = 0;
         }
@@ -328,14 +324,9 @@ final class StringUtils
 
         for ($i = 0; $i < $n1; ++$i) {
             for ($j = 0; $j < $n2; ++$j) {
-                if ($from[$i] === $to[$j]) {
-                    $ad         = $dm[$i - 1][$j - 1];
-                    $dm[$i][$j] = $ad + 1;
-                } else {
-                    $a1         = $dm[$i - 1][$j];
-                    $a2         = $dm[$i][$j - 1];
-                    $dm[$i][$j] = \max($a1, $a2);
-                }
+                $dm[$i][$j] = $from[$i] === $to[$j]
+                    ? $dm[$i - 1][$j - 1] + 1
+                    : \max($$dm[$i - 1][$j], $dm[$i][$j - 1]);
             }
         }