# Josh Berry's Blog

## Table of Contents

## 1 Random stuff.

- DancingLinks: In which I butcher an otherwise elegant technique.
- Sudoku: In which I use dancing links to solve Sudoku.
- sed: In which I make an overly complicated sed script.
- Change for a Dollar: In which I come up with a bad way to solve the change for a dollar problem.
- Luhn Checking: In which I switch doubling and adding digits with a lookup table.
- Playing with a Rubik's Cube: In which I confirm that a "permutations" view the toy works.

## 2 I'm probably wrong.

- Sum Types and Visitors: In which I make a bad argument with nobody.