Tasks not implemented in Quackery
Awareness
If Quackery is a language you like, or are interested in, please inform your fellow members of the Quackery community; this page can't be emptied without your and their participation.
If Quackery is a language you like, or are interested in, please inform your fellow members of the Quackery community; this page can't be emptied without your and their participation.
Tasks not implemented in Quackery
2
4
A
- Abbreviations, simple
- Abelian sandpile model
- Abstract type
- Active Directory/Search for a user
- Active object
- Align columns
- Aliquot sequence classifications
- Amb
- Angles (geometric), normalization and conversion
- Animate a pendulum
- Animation
- Append a record to the end of a text file
- Apply a digital filter (direct form II transposed)
- Arena storage pool
- Arithmetic evaluation
- Arithmetic-geometric mean/Calculate Pi
- Arithmetic/Complex
- Assertions
- Associative array/Iteration
- Atomic updates
- Averages/Mean time of day
- Averages/Median
B
- Babylonian spiral
- Balanced ternary
- Benford's law
- Binary strings
- Biorhythms
- Bitcoin/address validation
- Bitcoin/public point to address
- Bitmap
- Bitmap/Bresenham's line algorithm
- Bitmap/Bézier curves/Cubic
- Bitmap/Bézier curves/Quadratic
- Bitmap/Flood fill
- Bitmap/Histogram
- Bitmap/Midpoint circle algorithm
- Bitmap/PPM conversion through a pipe
- Bitmap/Read a PPM file
- Bitmap/Read an image through a pipe
- Bitmap/Write a PPM file
- Bitwise IO
- Blum integer
- Boyer-Moore string search
- Brace expansion
- Break OO privacy
- Brownian tree
- Bulls and cows
- Bulls and cows/Player
- Burrows–Wheeler transform
C
- CSV to HTML translation
- Calendar
- Calendar - for "REAL" programmers
- Call a foreign-language function
- Call a function in a shared library
- Canonicalize CIDR
- Chaocipher
- Check Machin-like formulas
- Check if a polygon overlaps with a rectangle
- Check if two polygons overlap
- Checkpoint synchronization
- Chernick's Carmichael numbers
- Chinese remainder theorem
- Chowla numbers
- Circular primes
- Classes
- Closest-pair problem
- Collections
- Color of a screen pixel
- Color quantization
- Color wheel
- Colour bars/Display
- Combinations and permutations
- Commatizing numbers
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Composite numbers k with no single digit factors whose factors are all substrings of k
- Concurrent computing
- Conjugate transpose
- Constrained genericity
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Conway's Game of Life
- Cramer's rule
- Create a file on magnetic tape
- Create an object at a given address
- Cumulative standard deviation
- Cut a rectangle
D
- DNS query
- Date manipulation
- De Bruijn sequences
- Deal cards for FreeCell
- Deconvolution/1D
- Deepcopy
- Define a primitive data type
- Delegates
- Detect division by zero
- Determinant and permanent
- Determine if a string has all unique characters
- Determine if only one instance is running
- Determine if two triangles overlap
- Determine sentence type
- Dining philosophers
- Display an outline as a nested table
- Distributed programming
- Diversity prediction theorem
- Documentation
- Dominoes
- Doomsday rule
- Doubly-linked list/Definition
- Doubly-linked list/Traversal
- Draw a clock
- Draw a pixel
- Draw a rotating cube
E
- EKG sequence convergence
- Earliest difference between prime gaps
- Echo server
- Eertree
- Elementary cellular automaton/Infinite length
- Elementary cellular automaton/Random number generator
- Elliptic Curve Digital Signature Algorithm
- Elliptic curve arithmetic
- Entropy
- Entropy/Narcissist
- Environment variables
- Euclid-Mullin sequence
- Euler's constant 0.5772...
- Euler's identity
- Euler's sum of powers conjecture
- Events
- Evolutionary algorithm
- Execute a Markov algorithm
- Extreme floating point values
F
- FTP
- Faces from a mesh
- Factors of a Mersenne number
- Fast Fourier transform
- Faulhaber's formula
- Faulhaber's triangle
- Feigenbaum constant calculation
- File modification time
- Find Chess960 starting position identifier
- Find duplicate files
- Find if a point is within a triangle
- Find the intersection of a line with a plane
- First class environments
- First perfect square in base n with n unique digits
- First-class functions/Use numbers analogously
- Fivenum
- Flipping bits game
- Forest fire
- Fork
- Formal power series
- Fortunate numbers
- Four bit adder
- Four is magic
- Four is the number of letters in the ...
- Fraction reduction
- French Republican calendar
G
- GUI component interaction
- GUI enabling/disabling of controls
- Galton box animation
- Gamma function
- Gauss-Jordan matrix inversion
- Gaussian elimination
- Generate Chess960 starting position
- Globally replace text in several files
- Go Fish
- Goldbach's comet
- Graph colouring
- Grayscale image
- Greedy algorithm for Egyptian fractions
H
- HTTPS
- HTTPS/Client-authenticated
- Handle a signal
- Hash from two arrays
- Hello world/Graphical
- Hello world/Standard error
- Heronian triangles
- Hickerson series of almost integers
- Hofstadter Figure-Figure sequences
- Home primes
- Honeycombs
- Horizontal sundial calculations
- Hough transform
- Hunt the Wumpus
I
- I before E except after C
- I'm a software engineer, get me out of here
- Image noise
- Imaginary base numbers
- Infinity
- Inheritance/Single
- Inverted index
J
K
- K-d tree
- K-means++ clustering
- Kernighans large earthquake problem
- Keyboard input/Obtain a Y or N response
- Keyboard macros
- Knapsack problem/0-1
- Knapsack problem/Bounded
- Knuth's algorithm S
- Kosaraju
- Kronecker product
- Kronecker product based fractals
L
- LZW compression
- Last letter-first letter
- Latin Squares in reduced form
- Legendre prime counting function
- Levenshtein distance
- List comprehensions
- List rooted trees
- Longest common subsequence
- Longest common substring
- Longest increasing subsequence
- Longest string challenge
- Loops/With multiple ranges
- Lychrel numbers
M
- MAC vendor lookup
- MD4
- MD5
- MD5/Implementation
- Magic squares of odd order
- Magic squares of singly even order
- Main step of GOST 28147-89
- Make directory path
- Mandelbrot set
- Mastermind
- Matrix chain multiplication
- Matrix-exponentiation operator
- Mayan numerals
- Maze generation
- Maze solving
- Median filter
- Meissel–Mertens constant
- Memory allocation
- Memory layout of a data structure
- Menu
- Merge and aggregate datasets
- Metered concurrency
- Metronome
- Minesweeper game
- Minimal steps down to 1
- Minimum positive multiple in base 10 using only 0 and 1
- Modified random distribution
- Monads/Maybe monad
- Morse code
- Mouse position
- Multi-base primes
- Multiple distinct objects
- Multiple regression
- Multiplicative order
- Munching squares
- Mutex
N
- Named parameters
- Nautical bell
- Nested function
- Nth root
- Numbers which are not the sum of distinct squares
- Numerical integration
- Numerical integration/Gauss-Legendre Quadrature
O
- Old Russian measure of length
- Old lady swallowed a fly
- OpenWebNet password
- Optional parameters
- Ormiston triples
P
- Padovan n-step number sequences
- Paraffins
- Parallel brute force
- Parameterized SQL statement
- Parse an IP Address
- Particle fountain
- Pascal matrix generation
- Pascal's triangle/Puzzle
- Pathological floating point problems
- Penney's game
- Pentomino tiling
- Percolation/Bond percolation
- Periodic table
- Peripheral drift illusion
- Perlin noise
- Pinstripe/Printer
- Play recorded sounds
- Playfair cipher
- Plot coordinate pairs
- Pointers and references
- Polymorphic copy
- Polynomial long division
- Polynomial regression
- Pragmatic directives
- Prime numbers whose neighboring pairs are tetraprimes
- Primes - allocate descendants to their ancestors
- Problem of Apollonius
- Program name
- Pythagoras tree
Q
R
- RIPEMD-160
- RSA code
- Radical of an integer
- Ramanujan primes/twins
- Ramanujan's constant
- Rate counter
- Ray-casting algorithm
- Real constants and functions
- Reduced row echelon form
- Reflection/List methods
- Rendezvous
- Resistor mesh
- Respond to an unknown method call
- Retrieve and search chat history
- Roots of a function
- Roots of a quadratic function
- Rosetta Code/Count examples
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Fix code tags
- Rosetta Code/Rank languages by number of users
- Rosetta Code/Rank languages by popularity
- Round-robin tournament schedule
S
- S-expressions
- SHA-1
- SHA-256
- SHA-256 Merkle tree
- SOAP
- SQL-based authentication
- Safe addition
- Safe primes and unsafe primes
- Sailors, coconuts and a monkey problem
- Scope modifiers
- Scope/Function names and labels
- Search a list
- Search a list of records
- Search in paragraph's text
- Secure temporary file
- Send email
- Set consolidation
- Set right-adjacent bits
- Shoelace formula for polygonal area
- Shortest common supersequence
- Show the epoch
- Simple database
- Simple windowed application
- Simulate input/Keyboard
- Simulate input/Mouse
- Singleton
- Singly-linked list/Element definition
- Singular value decomposition
- Sisyphus sequence
- Sleep
- Smarandache-Wellin primes
- Snake
- Sockets
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve the no connection puzzle
- Sort a list of object identifiers
- Sort an array of composite structures
- Sorting algorithms/Bead sort
- Soundex
- Speech synthesis
- Spelling of ordinal numbers
- Spinning rod animation/Text
- Square form factorization
- Stable marriage problem
- State name puzzle
- Statistics/Normal distribution
- Steffensen's method
- Straddling checkerboard
- Strassen's algorithm
- Stream merge
- Strip block comments
- Strip control codes and extended characters from a string
- Subtractive generator
- Successive prime differences
- Sudoku
- Sum and product puzzle
- Summarize and say sequence
- Super-d numbers
- Superellipse
- Superpermutation minimisation
- Sutherland-Hodgman polygon clipping
- Synchronous concurrency
T
- Tarjan
- Taxicab numbers
- Terminal control/Preserve screen
- Text processing/1
- The Name Game
- The sieve of Sundaram
- Tic-tac-toe
- Tonelli-Shanks algorithm
- Top rank per group
- Topic variable
- Topological sort
- Topswops
- Tree datastructures
- Tropical algebra overloading
- Tupper's self-referential formula
- Twelve statements
- Two bullet roulette
U
- UPC
- URL decoding
- URL parser
- Ulam spiral (for primes)
- Ultra useful primes
- Undefined values
- Unicode variable names
- Universal Turing machine
- Update a configuration file
- Use another language to call a function
V
- Vampire number
- Variable declaration reset
- Variable size/Get
- Variable size/Set
- Vector
- Verhoeff algorithm
- Verify distribution uniformity/Chi-squared test
- Video display modes
- Vigenère cipher/Cryptanalysis
- Visualize a tree
- Vogel's approximation method
- Voronoi diagram
W
- Wagstaff primes
- Walk a directory/Non-recursively
- Walk a directory/Recursively
- War card game
- Wilson primes of order n
- Window creation
- Window management
- Wireworld
- Word search
- Wordiff
- World Cup group stage
- Write entire file
- Write float arrays to a text file
X
Y
Z
Draft tasks not implemented in Quackery
1
3
A
- A* search algorithm
- ASCII control characters
- Addition chains
- Addition-chain exponentiation
- Air mass
- Anadromes
- Anagram generator
- Anaprimes
- Apéry's constant
- Arithmetic coding/As a generalized change of radix
- Aspect oriented programming
- Assertions in design by contract
- Audio alarm
- Audio frequency generator
- Audio overlap loop
- Autogram checker
B
- B-spline
- Banker's algorithm
- Base64 encode data
- Bilinear interpolation
- Binary coded decimal
- Binomial transform
- Bioinformatics/Subsequence
- Birthday problem
- Black box
- Blackjack strategy
- Boids
- Boustrophedon transform
- Brace expansion using ranges
C
- CLI-based maze-game
- CORDIC
- CalmoSoft primes
- Card shuffles
- Centroid of a set of N-dimensional points
- Changeable words
- Chebyshev coefficients
- Checksumcolor
- Chemical calculator
- Chess player
- Cipolla's algorithm
- Code segment unload
- Color separation
- Combinations with repetitions/Square digit chain
- Compiler/Preprocessor
- Compiler/Simple file inclusion pre processor
- Compiler/Verifying syntax
- Conjugate a Latin verb
- Consistent overhead byte stuffing
- Convert CSV records to TSV
- Count the coins/0-1
- Countdown
- Create an executable for a program in an interpreted language
- Create an object/Native demonstration
- Create your own text control codes
- Cross compilation
- Cubic special primes
- Curve that touches three points
D
- Data Encryption Standard
- Dating agency
- Days between dates
- De Polignac numbers
- Decimal floating point number to binary
- Diophantine linear system solving
- Discrete Fourier transform
- Distinct palindromes within decimal numbers
- Divide a rectangle into a number of unequal triangles
- Double Twin Primes
- Doubly-linked list/Element removal
- Draw pixel 2
E
- Eisenstein primes
- Elevator simulation
- English cardinal anagrams
- Erdős-primes
- Erdős–Woods numbers
- Even numbers which cannot be expressed as the sum of two twin primes
- Execute CopyPasta Language
- Exponential digital sums
- External sort
- Extreme primes
F
- Factor-perfect numbers
- Fibonacci heap
- Fibonacci matrix-exponentiation
- Find URI in text
- Find minimum number of coins that make a given value
- Find words which contain the most consonants
- Finite state machine
- Forbidden numbers
- Free polyominoes enumeration
G
- Generalised floating point addition
- Generalised floating point multiplication
- Geohash
- Geometric algebra
- Getting the number of decimal places
- Gradient descent
- Greed
H
I
- IPC via named pipe
- IRC gateway
- Iccanobif primes
- Idoneal numbers
- Implicit type conversion
- Inconsummate numbers in base 10
- Inner classes
- Input/Output for lines of text
- Input/Output for pairs of numbers
- Integer long division
- Interactive help
- Inventory sequence
- Iterators
J
K
L
- Lagrange Interpolation
- Largest difference between adjacent primes
- Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique
- Launch rocket with countdown and acceleration in stdout
- Least m such that n! + m is prime
- Length of an arc between two angles
- Line circle intersection
- Linux CPU utilization
- Long stairs
- Longest palindromic substrings
- Longest substrings without repeating characters
M
- Magic numbers
- Make a backup file
- Marching squares
- Markov chain text generator
- Maximum difference between adjacent elements of list
- Mersenne primes
- Minimum number of cells after, before, above and below NxN squares
- Minimum primes
- Modulinos
- Montgomery reduction
- Morpion solitaire
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Multiline shebang
- Multiplicatively perfect numbers
- Multiton
N
- N-body problem
- N-grams
- N-queens minimum and knights and bishops
- NYSIIS
- Native shebang
- Neighbour primes
- Next special primes
- Number triplets game
- Numbers k such that the last letter of k is the same as the first letter of k+1
- Numbers with prime digits whose sum is 13
- Numerical integration/Adaptive Simpson's method
O
- O'Halloran numbers
- One-two primes
- OpenGL pixel shader
- OpenGL/Utah teapot
- Orbital elements
- Ormiston pairs
- Overloaded operators
P
- Pairs with common factors
- Pan base non-primes
- Parse EBNF
- Parse command-line arguments
- Particle swarm optimization
- Penholodigital squares
- Penrose tiling
- Penta-power prime seeds
- Perceptron
- Polynomial derivative
- Polynomial synthetic division
- Posit numbers/decoding
- Posit numbers/encoding
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers p for which the sum of primes less than or equal to p is prime
- Prime numbers which contain 123
- Prime reciprocal sum
- Primes whose first and last number is 3
- Primes with digits in nondecreasing order
- Primes: n*2^m+1
- Print debugging statement
- Process SMIL directives in XML data
- Proof
- Protecting Memory Secrets
- Pseudorandom number generator image
Q
R
- Railway circuit
- Rainbow
- Ramanujan primes
- Ramsey's theorem
- Range modifications
- Raster bars
- Readline interface
- 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
- Reverse the order of lines in a text file while preserving the contents of each line
- Rice coding
- Robots
- Rodrigues’ rotation formula
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service
S
- SEND + MORE = MONEY
- Safe mode
- Sanitize user input
- Sealed classes and methods
- Segmentation fault protection
- Selection bias in clinical sciences
- Selective file copy
- Separate the house number from the street name
- 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
- Snake and ladder
- Solve a Rubik's cube
- Solve equations with substitution method
- Solve hanging lantern problem
- Solve triangle solitare puzzle
- Solving coin problems
- Sorensen–Dice coefficient
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Special divisors
- Special factorials
- Special neighbor primes
- Special pythagorean triplet
- Spoof game
- Square root by hand
- Starting a web browser
- Statistics/Chi-squared distribution
- Sub-unit squares
- Subset sum problem
- Substring primes
- Suffix tree
- Sum data type
- Sunflower fractal
- Super-Poulet numbers
- Szymański's algorithm
T
- Table creation
- Tamagotchi emulator
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Tetris
- Text between
- Text completion
- Text to HTML
- The ISAAC cipher
- Three word location
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Triangular numbers
- Type detection
U
- URL shortener
- Ulam numbers
- Undulating numbers
- Unicode polynomial equation
- Unique characters
- Unique characters in each string
- Unit testing
- Uno (card game)
- Untrusted environment
- Use a REST API
- User defined pipe and redirection operators
- Using a speech engine to highlight words
V
W
- Walsh matrix
- Wave function collapse
- Waveform analysis/Doh ray me
- Waveform analysis/Top and tail
- Weather routing
- WebGL rotating F
- Welch's t-test
- WiktionaryDumps to words
- Wolstenholme numbers
- Word break problem
- Worthwhile task shaving
X
Z
Tasks omitted from Quackery
End of List[edit]
Again, feel free to try your hand at any of the tasks listed on this page.