From 83e97337a607bb514a10583d7f0d2f20eba808f3 Mon Sep 17 00:00:00 2001
From: Quan Yang <quanyang@live.com>
Date: Sat, 2 Oct 2021 02:33:25 -0700
Subject: [PATCH] Include a snippet for swapping two variables using bitwise
 operators (#229)

This swaps the two values in the two variables without needing a third variable.
---
 contents/algorithms/binary.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contents/algorithms/binary.md b/contents/algorithms/binary.md
index c11dd1f3..fa4ee73a 100644
--- a/contents/algorithms/binary.md
+++ b/contents/algorithms/binary.md
@@ -18,6 +18,7 @@ Some helpful utility snippets:
 - Turn off k<sup>th</sup> bit: `num &= ~(1 << k)`.
 - Toggle the k<sup>th</sup> bit: `num ^= (1 << k)`.
 - To check if a number is a power of 2, `(num & num - 1) == 0` or `(num & (-num)) == num`.
+- Swapping two variables: `num1 ^= num2; num2 ^= num1; num1 ^= num2` 
 
 ## Corner cases