Issue #10: Do not use a formula to compute the count.

drupol · May 29, 2018 · 318097b · 318097b
1 parent ff8a6e9
commit 318097b
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/src/Iterators/Combinations.php b/src/Iterators/Combinations.php
@@ -86,8 +86,13 @@ public function valid()
      */
     public function count()
     {
-        return $this->fact(count($this->getDataset())) /
-          ($this->fact($this->getLength()) * $this->fact(count($this->getDataset()) - $this->getLength()));
+        $i = 0;
+
+        for ($this->rewind(); $this->valid(); $this->next()) {
+            $i++;
+        }
+
+        return $i;
     }
 
     /**