Reports:Tasks not implemented in Prolog
From Rosetta Code
Awareness
If Prolog is a language you like, or are interested in, please inform your fellow members of the Prolog community; this page can't be emptied without your and their participation.
If Prolog is a language you like, or are interested in, please inform your fellow members of the Prolog community; this page can't be emptied without your and their participation.
Contents
Not implemented[edit]
These are currently not implemented in Prolog. Please implement some if you can. If any tasks are not possible or too complex in Prolog, they should not be on this list. To mark a task as such, add {{omit from|Prolog}}, preserving the capitalization of the language, to that task. It will appear below under the "Not Considered" section.
A
- ASCII art diagram converter
- AVL tree
- Abbreviations, automatic
- Abbreviations, easy
- Abbreviations, simple
- Abelian sandpile model
- Abstract type
- Abundant odd numbers
- Active Directory/Connect
- Active Directory/Search for a user
- Active object
- Add a variable to a class instance at runtime
- Address of a variable
- Aliquot sequence classifications
- Angle difference between two bearings
- Angles (geometric), normalization and conversion
- Append a record to the end of a text file
- Apply a digital filter (direct form II transposed)
- Approximate Equality
- Archimedean spiral
- Arena storage pool
- Arithmetic-geometric mean/Calculate Pi
- Arithmetic/Complex
- Arithmetic/Rational
- Associative array/Merging
- Atomic updates
- Attractive numbers
- Average loop length
- Averages/Mean angle
- Averages/Mean time of day
- Averages/Mode
- Averages/Pythagorean means
- Averages/Root mean square
- Averages/Simple moving average
B
- Barnsley fern
- Bell numbers
- Bernoulli numbers
- Bioinformatics/Sequence mutation
- Bioinformatics/base count
- Bitcoin/address validation
- Bitcoin/public point to address
- Bitmap
- 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
- Bitwise operations
- Boolean values
- Brace expansion
- Brazilian numbers
- Break OO privacy
- Brownian tree
C
- CRC-32
- CUSIP
- Calendar - for "REAL" programmers
- Call a function
- Call a function in a shared library
- Call an object method
- Canny edge detector
- Cantor set
- Cartesian product of two or more lists
- Casting out nines
- Catalan numbers/Pascal's triangle
- Catmull–Clark subdivision surface
- Chaocipher
- Chaos game
- Check Machin-like formulas
- Checkpoint synchronization
- Chernick's Carmichael numbers
- Chinese zodiac
- Cholesky decomposition
- Chowla numbers
- Circles of given radius through two points
- Classes
- Color of a screen pixel
- Color quantization
- Colour bars/Display
- Colour pinstripe/Display
- Colour pinstripe/Printer
- Combinations and permutations
- Combinations with repetitions
- Command-line arguments
- Commatizing numbers
- Compare a list of strings
- Compare sorting algorithms' performance
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Conjugate transpose
- Constrained genericity
- Continued fraction/Arithmetic/Construct from rational number
- Convert decimal number to rational
- Convex hull
- Count in factors
- Create a file
- Create a file on magnetic tape
- Create a two-dimensional array at runtime
- Create an object at a given address
- Cuban primes
- Cumulative standard deviation
- Currency
- Cut a rectangle
D
- DNS query
- Date manipulation
- De Bruijn sequences
- Deal cards for FreeCell
- Death Star
- Deconvolution/1D
- Deconvolution/2D+
- Deepcopy
- Define a primitive data type
- Delegates
- Delete a file
- Deming's Funnel
- Determinant and permanent
- Determine if a string has all the same characters
- Determine if only one instance is running
- Digital root
- Digital root/Multiplicative digital root
- Discordian date
- Distributed programming
- Documentation
- Doubly-linked list/Definition
- Doubly-linked list/Element definition
- Doubly-linked list/Element insertion
- Doubly-linked list/Traversal
- Draw a clock
- Draw a pixel
- Draw a rotating cube
- Draw a sphere
- Dynamic variable names
E
- EKG sequence convergence
- Eban numbers
- Echo server
- Eertree
- Egyptian division
- Egyptian fractions
- Element-wise operations
- Emirp primes
- Empty program
- Enforced immutability
- Entropy/Narcissist
- Euler's identity
- Euler method
- Evaluate binomial coefficients
- Events
- Exceptions/Catch an exception thrown in a nested call
- Executable library
- Execute HQ9+
- Execute SNUSP
- Exponentiation order
- Extend your language
- Extensible prime generator
- Extreme floating point values
F
- FASTA format
- FTP
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Fairshare between two and more
- Fermat numbers
- Fibonacci n-step number sequences
- Fibonacci word
- Fibonacci word/fractal
- File extension is in extensions list
- File input/output
- File modification time
- File size
- Find common directory path
- Find largest left truncatable prime in a given base
- Find limit of recursion
- Find palindromic numbers in both binary and ternary bases
- Find the intersection of two lines
- Find the last Sunday of each month
- Find the missing permutation
- First-class functions/Use numbers analogously
- First class environments
- First perfect square in base N with N unique digits
- First power of 2 that has leading decimal digits of 12
- Fixed length records
- Flipping bits game
- Flow-control structures
- Forest fire
- Fork
- Formal power series
- Formatted numeric output
- Forward difference
- Four is magic
- Four is the number of letters in the ...
- Fraction reduction
- Function frequency
- Function prototype
- Functional coverage tree
- Fusc sequence
G
H
- HTTPS
- HTTPS/Authenticated
- HTTPS/Client-authenticated
- Handle a signal
- Haversine formula
- Hello world/Line printer
- Hello world/Newbie
- Hello world/Newline omission
- Hello world/Standard error
- Here document
- Heronian triangles
- Hickerson series of almost integers
- Hilbert curve
- History variables
- Hofstadter-Conway $10,000 sequence
- Hofstadter Q sequence
- Holidays related to Easter
- Horizontal sundial calculations
- Host introspection
- Hostname
- Hough transform
- Humble numbers
I
- IBAN
- I before E except after C
- Identity matrix
- Idiomatically determine all the characters that can be used for symbols
- Idiomatically determine all the lowercase and uppercase letters
- Image convolution
- Image noise
- Imaginary base numbers
- Increasing gaps between consecutive Niven numbers
- Index finite lists of positive integers
- Infinity
- Inheritance/Multiple
- Inheritance/Single
- Input loop
- Integer comparison
- Integer overflow
- Intersecting Number Wheels
- Introspection
- Inverted index
- Iterated digits squaring
J
K
- K-d tree
- K-means++ clustering
- Kernighans large earthquake problem
- Keyboard input/Flush the keyboard buffer
- Keyboard input/Keypress check
- Keyboard input/Obtain a Y or N response
- Keyboard macros
- Knuth's algorithm S
- Knuth's power tree
- Knuth shuffle
- Koch curve
- Kolakoski sequence
- Kosaraju
- Kronecker product
- Kronecker product based fractals
L
- LU decomposition
- LZW compression
- Lah numbers
- Last Friday of each month
- Latin Squares in reduced form
- Law of cosines - triples
- Left factorials
- Leonardo numbers
- Linear congruential generator
- Literals/Floating point
- Literals/Integer
- Long primes
- Longest string challenge
- Loops/Break
- Loops/Continue
- Loops/Increment loop index within loop body
- Loops/Nested
- Loops/Wrong ranges
- Lucky and even lucky numbers
- Ludic numbers
- Luhn test of credit card numbers
- Lychrel numbers
M
- MAC Vendor Lookup
- MD4
- MD5
- MD5/Implementation
- Machine code
- Mad Libs
- Magic squares of doubly even order
- Magic squares of odd order
- Magic squares of singly even order
- Main step of GOST 28147-89
- Make directory path
- Man or boy test
- Map range
- Matrix-exponentiation operator
- Matrix Digital Rain
- Matrix chain multiplication
- Mayan numerals
- McNuggets Problem
- Median filter
- Memory allocation
- Memory layout of a data structure
- Mertens function
- Metallic ratios
- Metered concurrency
- Metronome
- Mian-Chowla sequence
- Mind boggling card trick
- Minimal steps down to 1
- Modular exponentiation
- Monte Carlo methods
- Monty Hall problem
- Morse code
- Mouse position
- Move-to-front algorithm
- Multi-dimensional array
- Multifactorial
- Multiple distinct objects
- Multiple regression
- Multiplicative order
- Munchausen numbers
N
- N-smooth numbers
- Naming conventions
- Narcissist
- Narcissistic decimal number
- Natural sorting
- Nautical bell
- Negative base numbers
- Nested function
- Nested templated data
- Non-decimal radices/Convert
- Non-decimal radices/Input
- Non-decimal radices/Output
- Nonoblock
- Null object
- Numeric error propagation
- Numerical and alphabetical suffixes
- Numerical integration
- Numerical integration/Gauss-Legendre Quadrature
O
P
- P-value correction
- Palindromic gapful numbers
- Paraffins
- Parallel Brute Force
- Parametric polymorphism
- Parametrized SQL statement
- Parse an IP Address
- Parsing/RPN to infix conversion
- Parsing/Shunting-yard algorithm
- Partition an integer X into N primes
- Pascal matrix generation
- Pathological floating point problems
- Peaceful chess queen armies
- Peano curve
- Pell's equation
- Pentagram
- Percentage difference between images
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Perfect shuffle
- Perfect totient numbers
- Permutation test
- Permutations/Derangements
- Permutations/Rank of a permutation
- Permutations by swapping
- Pernicious numbers
- Phrase reversals
- Pi
- Pierpont primes
- Pig the dice game
- Pig the dice game/Player
- Pinstripe/Display
- Pinstripe/Printer
- Plasma effect
- Play recorded sounds
- Plot coordinate pairs
- Pointers and references
- Polymorphic copy
- Polynomial long division
- Polynomial regression
- Polyspiral
- Population count
- Pragmatic directives
- Price fraction
- Primes - allocate descendants to their ancestors
- Primorial numbers
- Probabilistic choice
- Problem of Apollonius
- Pythagoras tree
- Pythagorean quadruples
R
- RCRPG
- RIPEMD-160
- RPG Attributes Generator
- RSA code
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Random number generator (device)
- Random number generator (included)
- Random numbers
- Range consolidation
- Ranking methods
- Rare numbers
- Rate counter
- Ray-casting algorithm
- Read a configuration file
- Read a file line by line
- Read a specific line from a file
- Read entire file
- Real constants and functions
- Recaman's sequence
- Record sound
- Reduced row echelon form
- Reflection/Get source
- Reflection/List methods
- Reflection/List properties
- Regular expressions
- Remove lines from a file
- Rename a file
- Rendezvous
- Resistor mesh
- Respond to an unknown method call
- Retrieve and search chat history
- Return multiple values
- Reverse words in a string
- Roots of a function
- Roots of a quadratic function
- Rosetta Code/Count examples
- Rosetta Code/Find bare lang tags
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Fix code tags
- Rosetta Code/Rank languages by popularity
- Runge-Kutta method
- Runtime evaluation
- Runtime evaluation/In an environment
S
- S-Expressions
- SEDOLs
- SHA-1
- SHA-256
- SOAP
- SQL-based authentication
- Safe addition
- Safe primes and unsafe primes
- Sailors, coconuts and a monkey problem
- Same Fringe
- Scope/Function names and labels
- Scope modifiers
- Search a list of records
- Secure temporary file
- Self-referential sequence
- Semiprime
- Semordnilap
- Send an unknown method call
- Send email
- Sequence: nth number with exactly n divisors
- Sequence: smallest number greater than previous term with exactly n divisors
- Sequence: smallest number with exactly n divisors
- Sequence of non-squares
- Sequence of primes by trial division
- Sequence of primorial primes
- Set consolidation
- Set of real numbers
- Seven-sided dice from five-sided dice
- Sexy primes
- Shoelace formula for polygonal area
- Shortest common supersequence
- Show Ascii table
- Show the epoch
- Sierpinski carpet
- Sierpinski pentagon
- Simple database
- Simulate input/Keyboard
- Simulate input/Mouse
- Singleton
- Singly-linked list/Element definition
- Singly-linked list/Element insertion
- Singly-linked list/Traversal
- Smarandache prime-digital sequence
- Smith numbers
- Sokoban
- Solve a Holy Knight's tour
- Sort a list of object identifiers
- Sort an array of composite structures
- Sort disjoint sublist
- Sort numbers lexicographically
- Sort stability
- Sort three variables
- Sorting algorithms/Bead sort
- Sorting algorithms/Comb sort
- Sorting algorithms/Counting sort
- Sorting algorithms/Gnome sort
- Sorting algorithms/Heapsort
- Sorting algorithms/Pancake sort
- Sorting algorithms/Radix sort
- Sorting algorithms/Shell sort
- Sorting algorithms/Stooge sort
- Sorting algorithms/Strand sort
- Sparkline in unicode
- Special characters
- Special variables
- Speech synthesis
- Spelling of ordinal numbers
- Spinning rod animation/Text
- Split a character string based on change of character
- Square-free integers
- Square but not cube
- Stack traces
- Start from a main routine
- Statistics/Basic
- Statistics/Normal distribution
- Stem-and-leaf plot
- Stern-Brocot sequence
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Straddling checkerboard
- Stream Merge
- String append
- String case
- String comparison
- String concatenation
- String length
- String matching
- Strip block comments
- Strip control codes and extended characters from a string
- Strong and weak primes
- Subleq
- Subtractive generator
- Successive prime differences
- Suffixation of decimal numbers
- Sum and Product Puzzle
- Sum digits of an integer
- Sum to 100
- Sunflower fractal
- Super-d numbers
- Superellipse
- Superpermutation minimisation
- Sutherland-Hodgman polygon clipping
- Synchronous concurrency
- System time
T
- Table creation/Postal addresses
- Take notes on the command line
- Tarjan
- Taxicab numbers
- Temperature conversion
- Terminal control/Clear the screen
- Terminal control/Coloured text
- Terminal control/Cursor movement
- Terminal control/Cursor positioning
- Terminal control/Dimensions
- Terminal control/Display an extended character
- Terminal control/Hiding the cursor
- Terminal control/Inverse video
- Terminal control/Positional read
- Terminal control/Preserve screen
- Terminal control/Ringing the terminal bell
- Terminal control/Unicode output
- Ternary logic
- Test integerness
- Text processing/1
- Text processing/2
- Text processing/Max licenses in use
- Textonyms
- The ISAAC Cipher
- The Name Game
- Thiele's interpolation formula
- Thue-Morse
- Time a function
- Tokenize a string with escaping
- Tonelli-Shanks algorithm
- Topic variable
- Topological sort
- Topswops
- Total circles area
- Totient function
- Trabb Pardo–Knuth algorithm
- Trigonometric functions
- Truncatable primes
- Truncate a file
U
V
- Validate International Securities Identification Number
- Vampire number
- Van Eck sequence
- Variable-length quantity
- Variable size/Get
- Variable size/Set
- Verify distribution uniformity/Chi-squared test
- Verify distribution uniformity/Naive
- Video display modes
- Vigenère cipher
- Vigenère cipher/Cryptanalysis
- Vogel's approximation method
W
- Walk a directory/Non-recursively
- Walk a directory/Recursively
- Water collected between towers
- Web scraping
- Weird numbers
- Window creation/X11
- Window management
- Wireworld
- Word frequency
- Word search
- Word wrap
- World Cup group stage
- Write entire file
- Write float arrays to a text file
- Write language name in 3D ASCII
- Write to Windows event log
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 Prolog (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.
2
A
B
C
- Card shuffles
- Chebyshev coefficients
- Check input device is a terminal
- Check output device is a terminal
- Checksumcolor
- Chemical Calculator
- Cheryl's Birthday
- Chess player
- Chess player/Move generation
- Chess player/Program options and user interface
- Chess player/Search and evaluation
- Cipolla's algorithm
- Code segment unload
- Color wheel
- Combinations with repetitions/Square Digit Chain
- Compiler/ Verifying Syntax
- Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N)
- Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2)
- Create an object/Native demonstration
- Curve that touches three points
- Cycle detection
- Cyclotomic Polynomial
D
E
F
- Factorions
- Faulhaber's formula
- Feigenbaum constant calculation
- Fibonacci heap
- Fibonacci matrix-exponentiation
- File size distribution
- Find URI in text
- Find duplicate files
- Find first and last set bit of a long integer
- Find the intersection of a line with a plane
- Fivenum
- Free polyominoes enumeration
- French Republican calendar
G
H
I
L
M
N
P
- Palindrome dates
- Parse EBNF
- Particle Swarm Optimization
- Penrose tiling
- Pentomino tiling
- Perceptron
- Perlin noise
- Permutations with repetitions
- Permutations with some identical elements
- Playfair cipher
- Polynomial synthetic division
- Primalty by Wilson's theorem
- Print debugging statement
- Process SMIL directives in XML data
- Proof
R
- Railway circuit
- Ramsey's theorem
- Random Latin Squares
- Raster bars
- Read a file character by character/UTF8
- Readline interface
- Recursive descent parser generator
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Resistance Calculator
- Resistance Network Calculator
- Reverse the gender of a string
- Robots
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Rank languages by number of users
- Rosetta Code/Run examples
- Rosetta Code/Tasks sorted by average lines of code
- Rosetta Code/Tasks without examples
- Run as a daemon or service
S
- Safe mode
- Sattolo cycle
- Selective File Copy
- Self-hosting compiler
- Separate the house number from the street name
- Simulated annealing
- Sine wave
- Singly-linked list/Element removal
- Snake
- Snake And Ladder
- Solve a Rubik's Cube
- Solving coin problems
- Sorting Algorithms/Circle Sort
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Spoof game
- Starting a web browser
- Subset sum problem
- Suffix tree
- Sum data type
T
- Table creation
- Tamagotchi emulator
- Teacup rim text
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Tetris
- Text between
- Text to HTML
- Time-based One-time Password Algorithm
- Topological sort/Extracted top item
- Transportation problem
- Tree datastructures
- Two Sum
- Type detection
U
W
Requiring Attention[edit]
Examples[edit]
These tasks have implementations in Prolog, 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 Prolog which require attention; with your knowledge and assistance, we can improve the quality of the site's content.
Not Considered[edit]
These tasks are not generally counted toward "unimplemented", as somebody, somewhere, decided that Prolog was inappropriate for these tasks, or implementations of them would be unenlightening. Feel free to try your hand at them anyway.
No pages found.
End of List[edit]
Again, feel free to try your hand at any of the tasks listed on this page.
