- simple linked list
- two fer
- resistor color
- rna transcription
- word count
- bob
- nucleotide count
- secret handshake
- rotational cipher
- strain
- protein translation
- pig latin
- space age
- accumulate
- acronym
- series
- raindrops
- run length encoding
- sublist
- scrabble score
- sum of multiples
- pangram
- anagram
- nth prime
- all your base
- hamming
- triangle
- etl
- collatz conjecture
- armstrong numbers
- roman numerals
- grep
- beer song
- twelve days
- matrix
- matching brackets
- phone number
- isogram
- grade school
- leap
- grains
- change
- binary
- gigasecond
- pascals triangle
- he adecimal
- binary search
- binary search tree
- prime factors
- perfect numbers
- atbash cipher
- simple cipher
- say
- isbn verifier
- dnd character
- flatten array
- kindergarten garden
- list ops
- tournament
- meetup
- parallel letter frequency
- diffie hellman
- largest series product
- crypto square
- allergies
- difference of squares
- dominoes
- spiral matrix
- markdown
- luhn
- saddle points
- diamond
- sieve
- pythagorean triplet
- palindrome products
- custom set
- transpose
- alphametics
- clock
- scale generator
- robot simulator
- wordy
- rail fence cipher
- ocr numbers
- bank account
- queen attack
- minesweeper
- connect
- poker
- zipper
- bowling
- dot dsl
- forth