From 243b3ffcc05080a67115c863c2a5b1cc1c63fd31 Mon Sep 17 00:00:00 2001
From: Attila Bagossy <bagossyattila@outlook.com>
Date: Sun, 29 Jan 2017 17:55:01 +0100
Subject: [PATCH] permutation uses bigCombination for 31 elements or more

---
 combinatorics.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/combinatorics.js b/combinatorics.js
index fad089d..081e4ef 100644
--- a/combinatorics.js
+++ b/combinatorics.js
@@ -332,7 +332,13 @@
                 return size;
             },
             init: function() {
-                this.cmb = combination(ary, nelem);
+                /* combination can only be used for less than 31 elements */
+                if (ary.length < 31) {
+                    this.cmb = combination(ary, nelem);
+                } else {
+                    this.cmb = bigCombination(ary, nelem);
+                }
+                
                 this.per = _permutation(this.cmb.next());
             },
             next: function() {