# Reports:Tasks not implemented in PureBasic

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## Contents

## Not implemented[edit]

These are currently not implemented in PureBasic. Please implement some if you can. If any tasks are not possible or too complex in PureBasic, they should not be on this list. To mark a task as such, add **{{omit from|PureBasic}}**, 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
- Abelian sandpile model/Identity
- Abstract type
- Accumulator factory
- Active Directory/Connect
- Active Directory/Search for a user
- 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
- Arena storage pool
- Arithmetic-geometric mean/Calculate Pi
- Arithmetic/Rational
- Arithmetic evaluation
- Associative array/Merging
- Attractive numbers
- Average loop length
- Averages/Mean angle
- Averages/Mean time of day

### B

### C

- CSV to HTML translation
- CUSIP
- Calculating the value of e
- Calendar
- Calendar - for "REAL" programmers
- Calkin-Wilf sequence
- Call a function
- Call an object method
- Canny edge detector
- Canonicalize CIDR
- Cantor set
- Carmichael 3 strong pseudoprimes
- Cartesian product of two or more lists
- Casting out nines
- Catamorphism
- 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
- Chernick's Carmichael numbers
- Cheryl's birthday
- Cholesky decomposition
- Chowla numbers
- Church numerals
- Circles of given radius through two points
- Circular primes
- Cistercian numerals
- Color wheel
- Colour pinstripe/Printer
- Combinations and permutations
- Commatizing numbers
- Compare sorting algorithms' performance
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Conjugate transpose
- Constrained genericity
- Continued fraction
- Continued fraction/Arithmetic/Construct from rational number
- Convex hull
- Copy stdin to stdout
- Count the coins
- Cramer's rule
- Create a file on magnetic tape
- Cuban primes
- Currency
- Currying
- Cut a rectangle
- Cyclotomic polynomial

### D

- DNS query
- Damm algorithm
- De Bruijn sequences
- Death Star
- Deconvolution/1D
- Deconvolution/2D+
- Define a primitive data type
- Delegates
- Deming's Funnel
- Department numbers
- Determinant and permanent
- Determine if a string has all the same characters
- Determine if a string has all unique characters
- Determine if a string is squeezable
- Determine if two triangles overlap
- Dice game probabilities
- Digital root/Multiplicative digital root
- Dijkstra's algorithm
- Display an outline as a nested table
- Distributed programming
- Diversity prediction theorem
- Draw a rotating cube
- Dutch national flag problem

### E

- EKG sequence convergence
- Eban numbers
- Eertree
- Egyptian division
- Egyptian fractions
- Element-wise operations
- Elementary cellular automaton
- Elementary cellular automaton/Infinite length
- Elementary cellular automaton/Random Number Generator
- Elliptic curve arithmetic
- Emirp primes
- Entropy/Narcissist
- Euler's identity
- Exceptions/Catch an exception thrown in a nested call
- Executable library
- Execute SNUSP
- Exponentiation order

### F

- FTP
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorions
- Factors of a Mersenne number
- Fairshare between two and more
- Fast Fourier transform
- Faulhaber's formula
- Faulhaber's triangle
- Feigenbaum constant calculation
- Fermat numbers
- Fibonacci word/fractal
- File extension is in extensions list
- File size distribution
- Find duplicate files
- Find largest left truncatable prime in a given base
- Find palindromic numbers in both binary and ternary bases
- Find the intersection of a line with a plane
- Find the intersection of two lines
- First class environments
- First perfect square in base n with n unique digits
- First power of 2 that has leading decimal digits of 12
- Fivenum
- Fixed length records
- Flipping bits game
- Floyd-Warshall algorithm
- Formal power series
- Four is magic
- Four is the number of letters in the ...
- Fraction reduction
- Fractran
- Function frequency
- Functional coverage tree
- Fusc sequence

### G

### H

### I

- ISBN13 check digit
- Idiomatically determine all the characters that can be used for symbols
- Idiomatically determine all the lowercase and uppercase letters
- Image convolution
- Imaginary base numbers
- Increasing gaps between consecutive Niven numbers
- Index finite lists of positive integers
- Intersecting number wheels
- Inverted index
- Inverted syntax
- Isqrt (integer square root) of X

### K

### L

- LU decomposition
- Lah numbers
- Largest int from concatenated ints
- Largest number divisible by its digits
- Last letter-first letter
- Latin Squares in reduced form
- Law of cosines - triples
- Left factorials
- Levenshtein distance/Alignment
- List comprehensions
- List rooted trees
- Long literals, with continuations
- Long primes
- Long year
- Longest increasing subsequence
- Loops/Increment loop index within loop body
- Loops/Wrong ranges
- Lucky and even lucky numbers
- Ludic numbers
- Lychrel numbers

### M

- MAC Vendor Lookup
- MD4
- MD5/Implementation
- Mad Libs
- Magic 8-ball
- Magic squares of singly even order
- Main step of GOST 28147-89
- Make directory path
- Man or boy test
- Mastermind
- Matrix-exponentiation operator
- Matrix chain multiplication
- Matrix digital rain
- Maximum triangle path sum
- Mayan numerals
- McNuggets problem
- Median filter
- Merge and aggregate datasets
- Mertens function
- Metallic ratios
- Metaprogramming
- Mian-Chowla sequence
- Mind boggling card trick
- Minimal steps down to 1
- Minkowski question-mark function
- Modular arithmetic
- Modular exponentiation
- Monads/List monad
- Monads/Maybe monad
- Monads/Writer monad
- Move-to-front algorithm
- Multi-dimensional array
- Multifactorial
- Multiple regression
- Multiplicative order
- Multisplit
- Musical scale

### N

- N'th
- N-smooth numbers
- Naming conventions
- Narcissist
- Narcissistic decimal number
- Natural sorting
- Nautical bell
- Negative base numbers
- Nested function
- Nested templated data
- Next highest int from digits
- Nim game
- Nimber arithmetic
- Non-continuous subsequences
- Non-transitive dice
- Nonoblock
- Nonogram solver
- Numeric error propagation
- Numerical and alphabetical suffixes
- Numerical integration/Gauss-Legendre Quadrature

### O

### P

- P-value correction
- Palindrome dates
- Palindromic gapful numbers
- Paraffins
- Parametric polymorphism
- Parse an IP Address
- Parsing/RPN calculator algorithm
- Parsing/RPN to infix conversion
- Parsing/Shunting-yard algorithm
- Partial function application
- Partition an integer x into n primes
- Partition function P
- Pathological floating point problems
- Pattern matching
- Peaceful chess queen armies
- Peano curve
- Pell's equation
- Penney's game
- Pentagram
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Perfect shuffle
- Perfect totient numbers
- Perlin noise
- Permutations/Rank of a permutation
- Permutations by swapping
- Pierpont primes
- Pig the dice game
- Pig the dice game/Player
- Pinstripe/Printer
- Plasma effect
- Playfair cipher
- Poker hand analyser
- Polynomial long division
- Polynomial regression
- Polyspiral
- Population count
- Pragmatic directives
- Primality by Wilson's theorem
- Prime conspiracy
- Primes - allocate descendants to their ancestors
- Primorial numbers
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star
- Pythagorean quadruples

### R

- RIPEMD-160
- RSA code
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Range consolidation
- Ranking methods
- Rare numbers
- Read a configuration file
- Read a file character by character/UTF8
- Recaman's sequence
- Record sound
- Reduced row echelon form
- Reflection/Get source
- Reflection/List methods
- Reflection/List properties
- Rendezvous
- Repeat
- Resistor mesh
- Retrieve and search chat history
- Roots of a quadratic function
- Rosetta Code/Find bare lang tags
- Rosetta Code/Find unimplemented tasks
- Runtime evaluation/In an environment

### S

- S-expressions
- SHA-256 Merkle tree
- SQL-based authentication
- Safe addition
- Safe primes and unsafe primes
- Sailors, coconuts and a monkey problem
- Same fringe
- Scope/Function names and labels
- Search a list of records
- Self numbers
- Semiprime
- Semordnilap
- Send an unknown method call
- 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 primorial primes
- Set consolidation
- Set of real numbers
- Set puzzle
- Shoelace formula for polygonal area
- Shortest common supersequence
- Sierpinski pentagon
- Sierpinski triangle/Graphical
- Simple database
- Smarandache prime-digital sequence
- Sokoban
- Solve a Hidato puzzle
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Solve the no connection puzzle
- Sort a list of object identifiers
- Sort an outline at every level
- Sort using a custom comparator
- Sorting Algorithms/Circle Sort
- Sorting algorithms/Cocktail sort with shifting bounds
- Sorting algorithms/Patience sort
- Sparkline in unicode
- Speech synthesis
- Spelling of ordinal numbers
- Spinning rod animation/Text
- Square-free integers
- Square but not cube
- State name puzzle
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Stream merge
- Strong and weak primes
- Subleq
- Substitution cipher
- Subtractive generator
- Successive prime differences
- Suffixation of decimal numbers
- Sum and product puzzle
- Sum to 100
- Summarize and say sequence
- Sunflower fractal
- Super-d numbers
- Superellipse
- Superpermutation minimisation

### T

- Tarjan
- Taxicab numbers
- Teacup rim text
- Terminal control/Cursor movement
- Terminal control/Positional read
- Terminal control/Preserve screen
- Terminal control/Unicode output
- Ternary logic
- Test integerness
- Textonyms
- The ISAAC Cipher
- The Name Game
- Thiele's interpolation formula
- Tic-tac-toe
- Tokenize a string with escaping
- Tonelli-Shanks algorithm
- Topic variable
- Topswops
- Total circles area
- Totient function
- Tree datastructures
- Truth table
- Twelve statements

### U

### V

### 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 PureBasic (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

### B

### C

- CLI-based maze-game
- Card shuffles
- Changeable words
- Chebyshev coefficients
- Checksumcolor
- Chemical calculator
- Chess player
- Cipolla's algorithm
- Code segment unload
- Combinations with repetitions/Square digit chain
- Compiler/Verifying syntax
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n)
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Count the coins/0-1
- Curve that touches three points
- Cycle detection

### D

### E

### F

### G

### I

### L

- Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique
- Launch rocket with countdown and acceleration in stdout
- Length of an arc between two angles
- Line circle intersection
- Linux CPU utilization
- Logistic curve fitting in epidemiology
- Longest common prefix
- Longest common suffix
- Longest palindromic substrings

### M

- Magnanimous numbers
- Make a backup file
- Markov chain text generator
- Mayan calendar
- Mersenne primes
- Minimum positive multiple in base 10 using only 0 and 1
- Modulinos
- Montgomery reduction
- Morpion solitaire
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Multiline shebang
- Möbius function

### N

### P

- Pancake numbers
- Parse EBNF
- Parse command-line arguments
- Particle swarm optimization
- Penrose tiling
- Pentomino tiling
- Perceptron
- Permutations with repetitions
- Permutations with some identical elements
- Pisano period
- Polynomial synthetic division
- 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
- Ramsey's theorem
- Random Latin squares
- Range modifications
- Raster bars
- Readline interface
- Recursive descent parser generator
- Remote agent/Agent interface
- Remote agent/Agent logic
- Remote agent/Simulation
- Remove vowels from a string
- 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 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
- Sierpinski arrowhead curve
- Sierpinski curve
- Sierpinski square curve
- Simulated annealing
- Sine wave
- Singly-linked list/Element removal
- Smallest enclosing circle problem
- Snake
- Snake and Ladder
- Solve a Rubik's Cube
- Solve triangle solitare puzzle
- Solving coin problems
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Spoof game
- Square root by hand
- Starting a web browser
- Strassen's algorithm
- Subset sum problem
- Suffix tree
- Sum data type
- Sum of divisors

### T

- Table creation
- Tamagotchi emulator
- Tau function
- Tau number
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Tetris
- Text between
- Text completion
- Text to HTML
- Three word location
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Twin primes
- Two bullet roulette
- Two sum
- Type detection

### U

### W

## Requiring Attention[edit]

### Examples[edit]

These tasks have implementations in PureBasic, 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 PureBasic 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 PureBasic 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.