CodeSignal Golfing Guide

Collection of code golf tips specific to CodeSignal (where whitespace is free and input/output is performed with functions).

Language Cheat Sheets (in progress/incomplete)

These pages contain golfing idioms and tips for each language.

• JavaScript
• Python
• Java
• C#
• R
• Lua
• Haskell
• Kotlin
• Erlang
• Common Lisp
• Clojure
• Elixir
• CoffeeScript

Example Challenges

These are simple challenges which showcase the shortest way to perform some operation.

• Array Iterate
• Power
• Log 2
• While Loop
• Transliterate
• Char at Index
• Regex Replace
• Regex Match
• String Concatenation
• Square Root
• Int to Str
• Hypotenuse
• Square