# Go

One of the easiest ways to add new exercises to the Go track is to translate them from other language tracks on Exercism. This page lists all of the problem specifications in the common pool of exercises which have not yet been implemented in Go.

The icon links to the language-independent description of the problem.

The icon links to the canonical test data.

We also link to all the implementations of each exercise in other languages, which you can use for inspiration.

Once you've picked an exercise, follow the instructions in this guide and submit your pull request to the Go track repository on GitHub.

### Flatten Array

Take a nested list and return a single list with all values except nil/null

### List Ops

Implement basic list operations

### Run Length Encoding

Implement run-length encoding and decoding.

### Sublist

Write a function to determine if a list is a sublist of another list.

### Collatz Conjecture

Calculate the number of steps to reach 1 using the Collatz conjecture

### Rotational Cipher

Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.

### Alphametics

Write a function to solve alphametics puzzles.

### Dominoes

Make a chain of dominoes.

### Book Store

To try and encourage more sales of different books from a popular 5 book series, a bookshop has decided to offer discounts of multiple-book purchases.

### Proverb

For want of a horseshoe nail, a kingdom was lost, or so the saying goes. Output the full text of this proverbial rhyme.

### Rail Fence Cipher

Implement encoding and decoding for the rail fence cipher.

### Zipper

Creating a zipper for a binary tree.

### Rectangles

Count the rectangles in an ASCII diagram.

### Spiral Matrix

Given the size, return a square matrix of numbers in spiral order.

### Complex Numbers

Implement complex numbers.

### Grep

Search a file for lines matching a regular expression pattern. Return the line number and contents of each matching line.

### Scale Generator

Generate musical scales, given a starting note and a set of intervals.

### Two Bucket

Given two buckets of different size, demonstrate how to measure an exact number of liters.

### Zebra Puzzle

Solve the zebra puzzle.

### Markdown

Refactor a Markdown parser

### Sgf Parsing

Parsing a Smart Game Format string.

### Dot Dsl

Write a Domain Specific Language similar to the Graphviz dot language

### Go Counting

Count the scored points on a Go board.

### Hangman

Implement the logic of the hangman game using functional reactive programming.

### Lens Person

Use lenses to update nested records (specific to languages with immutable data).