From 4cb96fd264008e0cdd0ef9e098c98dfacc1f5f6c Mon Sep 17 00:00:00 2001
From: Angelos Chalaris <chalarangelo@gmail.com>
Date: Mon, 27 Sep 2021 15:28:26 +0300
Subject: [PATCH] Update powerset.md

---
 snippets/powerset.md | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/snippets/powerset.md b/snippets/powerset.md
index e05b57578..108d3b0d4 100644
--- a/snippets/powerset.md
+++ b/snippets/powerset.md
@@ -2,7 +2,7 @@
 title: powerset
 tags: math,algorithm,beginner
 firstSeen: 2017-12-07T14:41:33+02:00
-lastUpdated: 2020-12-28T13:49:24+02:00
+lastUpdated: 2021-09-27T15:27:07+02:00
 ---
 
 Returns the powerset of a given array of numbers.
@@ -11,9 +11,9 @@ Returns the powerset of a given array of numbers.
 
 ```js
 const powerset = arr =>
-  arr.reduce((a, v) => a.concat(a.map(r => [v].concat(r))), [[]]);
+  arr.reduce((a, v) => a.concat(a.map(r => r.concat(v))), [[]]);
 ```
 
 ```js
-powerset([1, 2]); // [[], [1], [2], [2, 1]]
+powerset([1, 2]); // [[], [1], [2], [1, 2]]
 ```