Tasks not implemented in Ruby
Awareness
If Ruby is a language you like, or are interested in, please inform your fellow members of the Ruby community; this page can't be emptied without your and their participation.
If Ruby is a language you like, or are interested in, please inform your fellow members of the Ruby community; this page can't be emptied without your and their participation.
Tasks not implemented in Ruby
1
A
- ADFGVX cipher
- AVL tree
- Abbreviations, easy
- Abelian sandpile model
- Active object
- Algebraic data types
- Almkvist-Giullera formula for pi
- Anagram generator
- Animated Spinners
- Apéry's constant
- Arena storage pool
- Arithmetic derivative
- Arithmetic numbers
- Autogram checker
B
- Babylonian spiral
- Bernstein basis polynomials
- Binomial transform
- Bioinformatics/Global alignment
- Boustrophedon transform
- Boyer-Moore string search
- Brilliant numbers
- Bézier curves/Intersections
C
- Camel case and snake case
- Canny edge detector
- Catmull–Clark subdivision surface
- Centre and radius of a circle passing through 3 points in a plane
- Chaos game
- Check Machin-like formulas
- Check if a polygon overlaps with a rectangle
- Check if two polygons overlap
- Chernick's Carmichael numbers
- Color quantization
- Colour pinstripe/Display
- Colour pinstripe/Printer
- Commatizing numbers
- Compiler/AST interpreter
- Compiler/Simple file inclusion pre processor
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Cycles of a permutation
- Cyclotomic polynomial
D
- Dating agency
- Death Star
- Deconvolution/1D
- Deconvolution/2D+
- Determine sentence type
- Display an outline as a nested table
- Dominoes
- Doomsday rule
- Draw a rotating cube
E
- EKG sequence convergence
- Earliest difference between prime gaps
- Elliptic Curve Digital Signature Algorithm
- Elliptic curve arithmetic
- Engel expansion
- Equal prime and composite sums
- Erdös-Selfridge categorization of primes
- Erdős-Nicolas numbers
- Erdős-primes
- Events
- Execute Computer/Zero
- Exponential digital sums
F
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorize string into Lyndon words
- Fermat pseudoprimes
- File size distribution
- Four is the number of letters in the ...
- French Republican calendar
- Function frequency
- Function prototype
- Functional coverage tree
G
- GSTrans string conversion
- GUI/Maximum window dimensions
- Gabow's algorithm
- Gaussian primes
- Gotchas
- Graph colouring
- Greatest prime dividing the n-th cubefree number
- Greyscale bars/Display
H
I
- I'm a software engineer, get me out of here
- Iccanobif primes
- Idiomatically determine all the characters that can be used for symbols
- Idoneal numbers
- Inconsummate numbers in base 10
- Inner classes
J
K
- K-d tree
- K-means++ clustering
- Klarner-Rado sequence
- Knuth's power tree
- Kosaraju
- Kronecker product
- Kronecker product based fractals
L
M
- MD5/Implementation
- Machine code
- Magic constant
- Magic numbers
- Main step of GOST 28147-89
- Mastermind
- Matrix chain multiplication
- Matrix digital rain
- Mayan calendar
- Meissel–Mertens constant
- Merge and aggregate datasets
- Minimal steps down to 1
- Minkowski question-mark function
- Multi-base primes
- Multi-dimensional array
- Musical scale
N
- Nested templated data
- Non-transitive dice
- Nonogram solver
- Numbers k such that the last letter of k is the same as the first letter of k+1
- Numbers which are not the sum of distinct squares
- Numerical and alphabetical suffixes
- Numerical integration/Gauss-Legendre Quadrature
O
P
- P-Adic numbers, basic
- P-Adic square roots
- Parallel brute force
- Parallel calculations
- Particle fountain
- Partition function P
- Penholodigital squares
- Pentagram
- Pentomino tiling
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Periodic table
- Peripheral drift illusion
- Perlin noise
- Pinstripe/Display
- Pinstripe/Printer
- Pisano period
- Polyspiral
- Pragmatic directives
- Prime numbers whose neighboring pairs are tetraprimes
- Prime reciprocal sum
- Prime triangle
- Primes - allocate descendants to their ancestors
- Primes: n*2^m+1
Q
R
- Ramanujan primes/twins
- Ramer-Douglas-Peucker line simplification
- Random sentence from book
- Range consolidation
- Ray-casting algorithm
- Record sound
- Rendezvous
- Resistor mesh
- Rhonda numbers
- Riordan numbers
- Rosetta Code/Rank languages by number of users
- Ruth-Aaron numbers
S
- SHA-256 Merkle tree
- Same fringe
- Sealed classes and methods
- Search in paragraph's text
- Self numbers
- Set right-adjacent bits
- Sierpinski square curve
- Sieve of Pritchard
- Simple turtle graphics
- Simulate input/Keyboard
- Simulate input/Mouse
- Singular value decomposition
- Snake
- Sorensen–Dice coefficient
- Sort an outline at every level
- Sorting algorithms/Cocktail sort with shifting bounds
- Spelling of ordinal numbers
- Square form factorization
- Steffensen's method
- Strassen's algorithm
- Sub-unit squares
- Suffixation of decimal numbers
- Superellipse
- Sync subtitles
- Syntax highlighting using Mediawiki formatting
T
- Tarjan
- Terminal control/Positional read
- Terminal control/Preserve screen
- Thiele's interpolation formula
- Tonelli-Shanks algorithm
- Tree datastructures
- Tree from nesting levels
- Triangular numbers
- Tropical algebra overloading
- Tupper's self-referential formula
U
V
- Variable declaration reset
- Variadic fixed-point combinator
- Verhoeff algorithm
- Video display modes
- Vigenère cipher/Cryptanalysis
W
- Walsh matrix
- War card game
- Window creation/X11
- Window management
- Word search
- Wordiff
- Wordle comparison
- Worthwhile task shaving
Z
Draft tasks not implemented in Ruby
1
3
A
- A* search algorithm
- ABC incremental counts
- ASCII control characters
- Addition-chain exponentiation
- Air mass
- Aspect oriented programming
- Audio frequency generator
- Audio overlap loop
B
- B-spline
- Banker's algorithm
- Bilinear interpolation
- Binary coded decimal
- Bioinformatics/Subsequence
- Black box
- Blackjack strategy
- Boids
- Brace expansion using ranges
- Brzozowski algebraic method
C
- CLI-based maze-game
- CORDIC
- Calmo numbers
- CalmoSoft primes
- Carmichael lambda function
- Centroid of a set of N-dimensional points
- Checksumcolor
- Chess player
- Cipolla's algorithm
- Code segment unload
- Color separation
- Compiler/Preprocessor
- Compiler/Verifying syntax
- Consistent overhead byte stuffing
- Continued fraction convergents
- Convert CSV records to TSV
- Count the coins/0-1
- Count the occurrence of each digit in e
- Countdown
- Create an executable for a program in an interpreted language
- Create your own text control codes
- Cross compilation
- Curve that touches three points
D
- Data Encryption Standard
- Decreasing contiguous subsequences
- Diophantine linear system solving
- Discrete Fourier transform
- Divide a rectangle into a number of unequal triangles
- Doubly-linked list/Element removal
- Draw pixel 2
E
- Eisenstein primes
- Elevator simulation
- English cardinal anagrams
- Erdős–Woods numbers
- Even numbers which cannot be expressed as the sum of two twin primes
- Execute CopyPasta Language
- Extended Straddling Checkerboard
- External sort
F
- Factor-perfect numbers
- Fibonacci heap
- Find minimum number of coins that make a given value
- Finite state machine
G
- Generalised floating point multiplication
- Geohash
- Geometric algebra
- Getting the number of decimal places
- Goodstein Sequence
- Gradient descent
- Greed
H
I
J
K
L
- L-system
- Lagrange Interpolation
- Largest palindrome product
- Launch rocket with countdown and acceleration in stdout
- Long stairs
- Longest palindromic substrings
- Longest substrings without repeating characters
- Lucas-Carmichael numbers
- Lunar arithmetic
M
- Marching squares
- Markov chain text generator
- McNaughton-Yamada-Thompson algorithm
- Montgomery reduction
- Morpion solitaire
- Mosaic matrix
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Multiplicatively perfect numbers
- Multiton
N
- N-body problem
- N-grams
- N-queens minimum and knights and bishops
- NYSIIS
- Next special primes
- Nimber arithmetic
- Number triplets game
- Numbers k whose divisor sum is equal to the divisor sum of k + 1
- Numerical integration/Adaptive Simpson's method
O
P
- Particle swarm optimization
- Penrose tiling
- Perceptron
- Permuted multiples
- Pollard's rho algorithm
- Polynomial derivative
- Polynomial synthetic division
- Posit numbers/decoding
- Posit numbers/encoding
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers of measurement
- Prime numbers p for which the sum of primes less than or equal to p is prime
- Print debugging statement
- Process SMIL directives in XML data
- Protecting Memory Secrets
- Pseudorandom number generator image
R
- Railway circuit
- Rainbow
- Ramanujan primes
- Range modifications
- Raster bars
- Recursive descent parser generator
- Red black tree sort
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Resistance calculator
- Resistance network calculator
- Reverse the gender of a string
- Rice coding
- Robots
- Rodrigues’ rotation formula
- Roots of a cubic polynomial
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service
S
- Safe and Sophie Germain primes
- Safe mode
- Sanitize user input
- Segmentation fault protection
- Selection bias in clinical sciences
- Selective file copy
- Self-hosting compiler
- Separate the house number from the street name
- Shape-Machine
- Sierpinski curve
- Sign of an integer (signum)
- Simulated annealing
- Simulated optics experiment/Data analysis
- Simulated optics experiment/Simulator
- Sine wave
- Singly-linked list/Element removal
- Singly-linked list/Reversal
- Smallest enclosing circle problem
- Solve a Rubik's cube
- Solve equations with substitution method
- Solving coin problems
- Sort the letters of string in alphabetical order
- Sorting algorithms/Tree sort on a linked list
- Special factorials
- Special pythagorean triplet
- Spoof game
- Square root by hand
- Starting a web browser
- Statistics/Chi-squared distribution
- Sturmian word
- Substring primes
- Suffix tree
- Sum data type
- Sunflower fractal
- Szymański's algorithm
T
- Tamagotchi emulator
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Tetris
- Text completion
- Text to HTML
- The ISAAC cipher
- Three word location
- Time conventions and conversions
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Type detection
U
- URL shortener
- Ulam numbers
- Unescape a string
- Unicode polynomial equation
- Uno (card game)
- Use a REST API
- Useless instructions
- User defined pipe and redirection operators
V
W
- Wave function collapse
- Waveform analysis/Doh ray me
- Waveform analysis/Top and tail
- Weather routing
- WebGL rotating F
- WiktionaryDumps to words
X
Tasks omitted from Ruby
C
P
V
End of List
Again, feel free to try your hand at any of the tasks listed on this page.