Reports:Tasks not implemented in J
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Contents
Not implemented[edit]
These are currently not implemented in J. Please implement some if you can. If any tasks are not possible or too complex in J, they should not be on this list. To mark a task as such, add {{omit from|J}}, preserving the capitalization of the language, to that task. It will appear below under the "Not Considered" section.
2
A
B
C
- Calkin-Wilf sequence
- Canonicalize CIDR
- Chaocipher
- Chat server
- Check input device is a terminal
- Chernick's Carmichael numbers
- Church numerals
- Cistercian numerals
- Color of a screen pixel
- Color wheel
- Colour pinstripe/Printer
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Copy stdin to stdout
- Create a file on magnetic tape
- Create an object at a given address
- Cyclotomic polynomial
D
I
K
M
N
P
- P-value correction
- Palindrome dates
- Parallel brute force
- Parametrized SQL statement
- Partition function P
- Peaceful chess queen armies
- Percolation/Bond percolation
- Pierpont primes
- Pinstripe/Printer
- Play recorded sounds
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star
R
S
- SHA-256 Merkle tree
- SOAP
- SQL-based authentication
- Secure temporary file
- Self numbers
- Send email
- Sequence: nth number with exactly n divisors
- Sexy primes
- Shortest common supersequence
- Sierpinski pentagon
- Simulate input/Keyboard
- Simulate input/Mouse
- Sokoban
- Solve a Hidato puzzle
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Sort an outline at every level
- Sorting algorithms/Cocktail sort with shifting bounds
- Sorting algorithms/Sleep sort
- Speech synthesis
- Spelling of ordinal numbers
- Spinning rod animation/Text
- Stream merge
- Suffixation of decimal numbers
- Sum and product puzzle
- Sunflower fractal
T
Draft tasks without implementation[edit]
These tasks are drafts, meaning they largely need more work to turn them into full tasks. Perhaps you can help by trying to implement them in J (after all, one of the key requirements for a task being non-draft is multiple implementations, preferably in widely different languages) but be aware that this may be difficult because of lack of definition of the task itself.
A
C
E
F
G
L
M
N
P
- Pancake numbers
- Parse EBNF
- Penrose tiling
- Pentomino tiling
- Perceptron
- Permutations with some identical elements
- Pisano period
- Powerful numbers
- Price list behind API
- Prime words
- Print debugging statement
- Print itself
- Process SMIL directives in XML data
- Product of divisors
- Pseudo-random numbers/Splitmix64
- Pseudorandom number generator image
R
- Railway circuit
- Random Latin squares
- Range modifications
- Raster bars
- Readline interface
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Remove vowels from a string
- Resistance calculator
- Resistance network calculator
- Robots
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Rank languages by number of users
- Rosetta Code/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service
S
- Safe mode
- Selective file copy
- Sierpinski arrowhead curve
- Sierpinski curve
- Sierpinski square curve
- Sine wave
- Singly-linked list/Element removal
- Smallest enclosing circle problem
- Snake
- Solve a Rubik's Cube
- Solving coin problems
- Spoof game
- Square root by hand
- Starting a web browser
- Strassen's algorithm
- Sum data type
- Sum of divisors
T
U
W
Requiring Attention[edit]
Examples[edit]
These tasks have implementations in J, but somebody, somewhere, decided that the example implementation was faulty or in some other way requiring attention. If you're familiar with the task and language, please consider reviewing/correcting the example and removing the notice.
Other pages[edit]
These are other pages related to J which require attention; with your knowledge and assistance, we can improve the quality of the site's content.
No pages found.
Not Considered[edit]
These tasks are not generally counted toward "unimplemented", as somebody, somewhere, decided that J was inappropriate for these tasks, or implementations of them would be unenlightening. Feel free to try your hand at them anyway.
End of List[edit]
Again, feel free to try your hand at any of the tasks listed on this page.
