Tasks not implemented in jq
Awareness
If jq is a language you like, or are interested in, please inform your fellow members of the jq community; this page can't be emptied without your and their participation.
If jq is a language you like, or are interested in, please inform your fellow members of the jq community; this page can't be emptied without your and their participation.
Tasks not implemented in jq
1
2
A
- ADFGVX cipher
- ASCII art diagram converter
- AVL tree
- Accumulator factory
- Active Directory/Connect
- Active Directory/Search for a user
- Active object
- Address of a variable
- 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
- Atomic updates
- Average loop length
- Averages/Simple moving average
B
- Barnsley fern
- 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
- Boyer-Moore string search
- Break OO privacy
- Brownian tree
- Bulls and cows/Player
- Bézier curves/Intersections
C
- CRC-32
- Calendar - for "REAL" programmers
- Call a foreign-language function
- Call a function in a shared library
- Call an object method
- Canny edge detector
- Carmichael 3 strong pseudoprimes
- Catmull–Clark subdivision surface
- Chaocipher
- Chaos game
- Chat server
- Check Machin-like formulas
- Check input device is a terminal
- Check output device is a terminal
- Check that file exists
- Checkpoint synchronization
- Chernick's Carmichael numbers
- Classes
- Closures/Value capture
- Color of a screen pixel
- Color quantization
- Color wheel
- Colour bars/Display
- Colour pinstripe/Display
- Colour pinstripe/Printer
- Compare sorting algorithms' performance
- Compile-time calculation
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Composite numbers k with no single digit factors whose factors are all substrings of k
- Concurrent computing
- Constrained genericity
- Continued fraction/Arithmetic/Construct from rational number
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Create a file
- Create a file on magnetic tape
- Create an object at a given address
D
- DNS query
- Deal cards for FreeCell
- Death Star
- Deconvolution/2D+
- Delegates
- Delete a file
- Determine if only one instance is running
- Dining philosophers
- Display an outline as a nested table
- Distributed programming
- Documentation
- Dominoes
- Doubly-linked list/Definition
- Doubly-linked list/Element definition
- Doubly-linked list/Element insertion
- Doubly-linked list/Traversal
- Draw a clock
- Draw a cuboid
- Draw a pixel
- Draw a rotating cube
E
- Echo server
- Eertree
- Elliptic Curve Digital Signature Algorithm
- Empty directory
- Erdös-Selfridge categorization of primes
- Events
- Executable library
- Execute Brain****
- Execute HQ9+
- Execute SNUSP
- Execute a system command
- Exponentiation with infix operators in (or operating on) the base
F
- FTP
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factors of a Mersenne number
- Fermat pseudoprimes
- File modification time
- Find Chess960 starting position identifier
- Find largest left truncatable prime in a given base
- Flipping bits game
- Forest fire
- Fork
- Four is the number of letters in the ...
- Fraction reduction
- Fractran
- French Republican calendar
- Function frequency
- Functional coverage tree
G
- GUI component interaction
- GUI enabling/disabling of controls
- GUI/Maximum window dimensions
- Galton box animation
- General FizzBuzz
- Generate random chess position
- Get system command output
- Go Fish
- Graph colouring
- Grayscale image
- Greedy algorithm for Egyptian fractions
- Greyscale bars/Display
H
- HTTP
- HTTPS
- HTTPS/Authenticated
- HTTPS/Client-authenticated
- Handle a signal
- Hello world/Line printer
- Hello world/Web server
- History variables
- Home primes
- Honeycombs
- Host introspection
- Hough transform
- Huffman coding
- Hunt the Wumpus
I
- I'm a software engineer, get me out of here
- Image convolution
- Image noise
- Imaginary base numbers
- Inheritance/Multiple
- Inheritance/Single
- Interactive programming (repl)
J
K
- Keyboard input/Flush the keyboard buffer
- Keyboard input/Keypress check
- Keyboard input/Obtain a Y or N response
- Keyboard macros
- Knight's tour
- Kronecker product based fractals
L
M
- MAC vendor lookup
- MD4
- MD5
- MD5/Implementation
- Machine code
- Mad Libs
- Magic 8-ball
- Main step of GOST 28147-89
- Make directory path
- Man or boy test
- Mastermind
- Matrix digital rain
- Mayan calendar
- Maze solving
- Median filter
- Meissel–Mertens constant
- Memory allocation
- Memory layout of a data structure
- Metaprogramming
- Metered concurrency
- Metronome
- Miller–Rabin primality test
- Mind boggling card trick
- Minesweeper game
- Minimal steps down to 1
- Minkowski question-mark function
- Modified random distribution
- Monads/Maybe monad
- Monads/Writer monad
- Morse code
- Mouse position
- Multi-base primes
- Musical scale
- Mutex
N
- Narcissist
- Nautical bell
- Non-decimal radices/Output
- Non-transitive dice
- Nonoblock
- Nonogram solver
- Numeric error propagation
- Numerical and alphabetical suffixes
O
- OLE automation
- Object serialization
- Odd word problem
- One-time pad
- OpenGL
- OpenWebNet password
- Ormiston triples
P
- P-Adic numbers, basic
- P-Adic square roots
- P-value correction
- Padovan n-step number sequences
- Palindromic gapful numbers
- Pan base non-primes
- Pancake numbers
- Parallel brute force
- Parallel calculations
- Parameterized SQL statement
- Parametric polymorphism
- Parsing/Shunting-yard algorithm
- Particle fountain
- Pell numbers
- Penney's game
- Pentomino tiling
- Percentage difference between images
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Peripheral drift illusion
- Perlin noise
- Pig the dice game
- Pig the dice game/Player
- Pinstripe/Display
- Pinstripe/Printer
- Pisano period
- Plasma effect
- Play recorded sounds
- Playfair cipher
- Poker hand analyser
- Polymorphic copy
- Polyspiral
- Pragmatic directives
- Prime numbers whose neighboring pairs are tetraprimes
- Program name
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star
Q
R
- RCRPG
- RIPEMD-160
- Ramanujan primes/twins
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Random number generator (included)
- Random sentence from book
- Rare numbers
- Ray-casting algorithm
- Record sound
- Reflection/Get source
- Reflection/List methods
- Rename a file
- Rendezvous
- Repunit primes
- Respond to an unknown method call
- Retrieve and search chat history
- Rosetta Code/Fix code tags
- Rosetta Code/Rank languages by number of users
- Runtime evaluation
- Runtime evaluation/In an environment
- Ruth-Aaron numbers
S
- SHA-1
- SHA-256
- SHA-256 Merkle tree
- SOAP
- SQL-based authentication
- Safe addition
- Secure temporary file
- Send an unknown method call
- Send email
- Sequence of primorial primes
- Set puzzle
- Set right-adjacent bits
- Set, the card game
- Sierpinski pentagon
- Sieve of Pritchard
- Simple database
- Simple turtle graphics
- Simple windowed application
- Simulate input/Keyboard
- Simulate input/Mouse
- Singleton
- Singular value decomposition
- Sleeping Beauty problem
- Smallest number k such that k+2^m is composite for all m less than k
- Smarandache-Wellin primes
- Snake
- Sockets
- Sokoban
- Solve a Hidato puzzle
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Sort an outline at every level
- Sorting algorithms/Bogosort
- Sorting algorithms/Cocktail sort with shifting bounds
- Soundex
- Speech synthesis
- Stack traces
- Straddling checkerboard
- Strassen's algorithm
- Stream merge
- Suffixation of decimal numbers
- Super-Poulet numbers
- Superpermutation minimisation
- Sutherland-Hodgman polygon clipping
- Synchronous concurrency
T
- Table creation/Postal addresses
- Take notes on the command line
- Terminal control/Dimensions
- Terminal control/Positional read
- Terminal control/Preserve screen
- Terminal control/Ringing the terminal bell
- Thiele's interpolation formula
- Tic-tac-toe
- Time a function
- Tree from nesting levels
- Tupper's self-referential formula
- Two bullet roulette
- Two's complement
U
- Ukkonen’s suffix tree construction
- Ultra useful primes
- Universal Lambda Machine
- Universal Turing machine
- Unix/ls
- Untouchable numbers
- Update a configuration file
- Use another language to call a function
- User input/Graphical
V
- Variable size/Get
- Variable size/Set
- Variadic fixed-point combinator
- Verify distribution uniformity/Naive
- Video display modes
- Vigenère cipher/Cryptanalysis
- Vogel's approximation method
- Voronoi diagram
W
- Wagstaff primes
- Walk a directory/Non-recursively
- Walk a directory/Recursively
- War card game
- Wasteful, equidigital and frugal numbers
- Window creation
- Window creation/X11
- Window management
- Word search
- Wordiff
- World Cup group stage
- Write entire file
- Write to Windows event log
X
Y
Z
Draft tasks not implemented in jq
1
3
A
- A* search algorithm
- Addition chains
- Addition-chain exponentiation
- Apéry's constant
- Arithmetic coding/As a generalized change of radix
- Aspect oriented programming
- Audio alarm
- Audio frequency generator
- Audio overlap loop
- Autogram checker
B
- B-spline
- Banker's algorithm
- Bilinear interpolation
- Binary coded decimal
- Birthday problem
- Black box
- Blackjack strategy
- Boids
C
- CLI-based maze-game
- Calmo numbers
- CalmoSoft primes
- Carmichael lambda function
- Checksumcolor
- Chess player
- Code segment unload
- Color separation
- Compiler/Preprocessor
- Compiler/Simple file inclusion pre processor
- Consistent overhead byte stuffing
- Continued fraction convergents
- Countdown
- Create your own text control codes
- Cross compilation
- Curve that touches three points
D
- Data Encryption Standard
- Dating agency
- Decimal floating point number to binary
- Diophantine linear system solving
- Divide a rectangle into a number of unequal triangles
- Doubly-linked list/Element removal
- Draw pixel 2
E
- Elevator simulation
- Engel expansion
- English cardinal anagrams
- Erdős–Woods numbers
- Execute CopyPasta Language
- External sort
F
G
- Generalised floating point addition
- Generalised floating point multiplication
- Geometric algebra
- Greed
H
I
K
L
- L-system
- 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
- Line circle intersection
- Linux CPU utilization
- Lucas-Carmichael numbers
M
- Make a backup file
- Marching squares
- Markov chain text generator
- Mersenne primes
- Modulinos
- Montgomery reduction
- Morpion solitaire
- Multidimensional Newton-Raphson method
- Multiplicatively perfect numbers
- Multiton
N
- N-queens minimum and knights and bishops
- NYSIIS
- Nimber arithmetic
- Number triplets game
- Numerical integration/Adaptive Simpson's method
O
P
- Parse EBNF
- Particle swarm optimization
- Posit numbers/decoding
- Posit numbers/encoding
- Powerful numbers
- Prime reciprocal sum
- Process SMIL directives in XML data
- Proof
- Protecting Memory Secrets
R
- Railway circuit
- 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
- Rice coding
- Robots
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service
S
- Safe mode
- Sealed classes and methods
- Segmentation fault protection
- Selection bias in clinical sciences
- Selective file copy
- Self-hosting compiler
- Simulated annealing
- Simulated optics experiment/Data analysis
- Simulated optics experiment/Simulator
- Sine wave
- Snake and ladder
- Solve a Rubik's cube
- Solve triangle solitare puzzle
- Solving coin problems
- Sorting algorithms/Tree sort on a linked list
- Spoof game
- Starting a web browser
- Suffix tree
- Sum data type
- Syntax highlighting using Mediawiki formatting
- 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 to HTML
- The ISAAC cipher
- Time-based one-time password algorithm
- Transportation problem
U
- URL shortener
- Unicode polynomial equation
- Uno (card game)
- Untrusted environment
- Use a REST API
- User defined pipe and redirection operators
- Using a speech engine to highlight words
V
W
- Wave function collapse
- Waveform analysis/Doh ray me
- Waveform analysis/Top and tail
- Weather routing
- WebGL rotating F
- WiktionaryDumps to words
- Worthwhile task shaving
X
Tasks omitted from jq
End of List
Again, feel free to try your hand at any of the tasks listed on this page.