extends: post.liquid
title: swap in double-linked lists
date: 07 May 2012 22:22:00 +0200
path: /:year/:month/:day/swap-in-double-linked-lists
route: blog
---

Yesterday I had to implement [Selection Sort](http://en.wikipedia.org/wiki/Selection_sort)
for double-linked lists and I had some trouble finding the correct solution
when it comes to swapping two elements.

But I finally figured out how to correctly swap the pointers and I'll drop the
code here so others can use it (or even tell me about hidden bugs)

I implemented it in Java, so see here:

<script src="https://gist.github.com/2630183.js"> </script>