Tasks not implemented in Delphi
Awareness
If Delphi is a language you like, or are interested in, please inform your fellow members of the Delphi community; this page can't be emptied without your and their participation.
If Delphi is a language you like, or are interested in, please inform your fellow members of the Delphi community; this page can't be emptied without your and their participation.
Tasks not implemented in Delphi
1
2
9
A
- ADFGVX cipher
- ASCII art diagram converter
- AVL tree
- Abelian sandpile model/Identity
- Active Directory/Connect
- Active Directory/Search for a user
- Algebraic data types
- Aliquot sequence classifications
- Almkvist-Giullera formula for pi
- Amb
- Anadromes
- Anagram generator
- Append a record to the end of a text file
- Apply a digital filter (direct form II transposed)
- Arithmetic derivative
- Atomic updates
B
- Babylonian spiral
- Balanced ternary
- Bernstein basis polynomials
- Bifid cipher
- Bin given limits
- Bioinformatics/Global alignment
- Bioinformatics/Sequence mutation
- Bitmap/Histogram
- Bitmap/PPM conversion through a pipe
- Bitmap/Read an image through a pipe
- Blum integer
- Boustrophedon transform
- Boyer-Moore string search
- Brace expansion
- Break OO privacy
- Bulls and cows/Player
- Burrows–Wheeler transform
- Bézier curves/Intersections
C
- Calendar - for "REAL" programmers
- Calkin-Wilf sequence
- Canny edge detector
- Canonicalize CIDR
- Carmichael 3 strong pseudoprimes
- Casting out nines
- Catmull–Clark subdivision surface
- Centre and radius of a circle passing through 3 points in a plane
- Chat server
- Check Machin-like formulas
- Check if a polygon overlaps with a rectangle
- Check if two polygons overlap
- Check input device is a terminal
- Check output device is a terminal
- Checkpoint synchronization
- Chernick's Carmichael numbers
- Cheryl's birthday
- Church numerals
- Cistercian numerals
- Color quantization
- Colour pinstripe/Printer
- Combinations and permutations
- Combinations with repetitions
- 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/G(matrix ng, continued fraction n)
- Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)
- Cramer's rule
- Curzon numbers
- Cycles of a permutation
- Cyclotomic polynomial
D
- De Bruijn sequences
- Deceptive numbers
- Deconvolution/1D
- Deconvolution/2D+
- Decorate-sort-undecorate idiom
- Deming's funnel
- Dice game probabilities
- Digital root/Multiplicative digital root
- Dinesman's multiple-dwelling problem
- Display a linear combination
- Display an outline as a nested table
- Distance and Bearing
- Distributed programming
- Distribution of 0 digits in factorial series
- Dominoes
- Doomsday rule
E
- EKG sequence convergence
- Earliest difference between prime gaps
- Eban numbers
- Eertree
- Element-wise operations
- Elementary cellular automaton
- Elementary cellular automaton/Infinite length
- Elementary cellular automaton/Random number generator
- Elliptic Curve Digital Signature Algorithm
- Elliptic curve arithmetic
- Entropy/Narcissist
- Erdös-Selfridge categorization of primes
- Euclid-Mullin sequence
- Euclidean rhythm
- Executable library
- Execute SNUSP
- Execute a Markov algorithm
- Exponentiation with infix operators in (or operating on) the base
F
- FTP
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorize string into Lyndon words
- Faulhaber's formula
- Faulhaber's triangle
- Fermat numbers
- Fermat pseudoprimes
- Find Chess960 starting position identifier
- 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
- First class environments
- First-class functions/Use numbers analogously
- Flatten a list
- Flipping bits game
- Flow-control structures
- Floyd-Warshall algorithm
- Forest fire
- Formal power series
- Fortunate numbers
- Four is the number of letters in the ...
- French Republican calendar
- Function frequency
- Functional coverage tree
G
- GSTrans string conversion
- Galton box animation
- Gauss-Jordan matrix inversion
- Gaussian primes
- General FizzBuzz
- Generate Chess960 starting position
- Generate random chess position
- Get system command output
- Go Fish
- Golden ratio/Convergence
- Gotchas
- Graph colouring
- Greatest prime dividing the n-th cubefree number
- Greedy algorithm for Egyptian fractions
H
- HTTPS/Client-authenticated
- Handle a signal
- Hash join
- Hashtron inference
- Hex dump
- Hex words
- Hickerson series of almost integers
- Hofstadter Figure-Figure sequences
- Hofstadter-Conway $10,000 sequence
- Home primes
- Hough transform
- Huffman coding
- Hunt the Wumpus
I
- I'm a software engineer, get me out of here
- IBAN
- Idoneal numbers
- Image convolution
- Imaginary base numbers
- Index finite lists of positive integers
- Inner classes
- Intersecting number wheels
- Introspection
- Isograms and heterograms
J
K
- K-d tree
- Knapsack problem/Bounded
- Knapsack problem/Unbounded
- Knuth's algorithm S
- Knuth's power tree
- Kolakoski sequence
- Kronecker product
- Kronecker product based fractals
L
- LU decomposition
- LZW compression
- Lah numbers
- Langton's ant
- Latin Squares in reduced form
- Left factorials
- Legendre prime counting function
- Levenshtein distance/Alignment
- List comprehensions
- List rooted trees
- Logistic curve fitting in epidemiology
- Longest common subsequence
- Longest increasing subsequence
- Longest string challenge
- Lucky and even lucky numbers
- Lychrel numbers
- Lyndon word
M
- Mad Libs
- Magic squares of doubly even order
- Magic squares of singly even order
- Main step of GOST 28147-89
- Mastermind
- Matrix chain multiplication
- Matrix digital rain
- Maximum triangle path sum
- Mayan calendar
- Mayan numerals
- McNuggets problem
- Merge and aggregate datasets
- Metallic ratios
- Metaprogramming
- Metered concurrency
- Mian-Chowla sequence
- Miller–Rabin primality test
- Mind boggling card trick
- Minesweeper game
- Minimal steps down to 1
- Minimum positive multiple in base 10 using only 0 and 1
- Minkowski question-mark function
- Modified random distribution
- Modular arithmetic
- Monads/Writer monad
- Motzkin numbers
- Move-to-front algorithm
- Multi-base primes
- Multiple regression
- Multiplicative order
N
- Narcissist
- Natural sorting
- Nautical bell
- Negative base numbers
- Nested templated data
- Nim game
- Non-continuous subsequences
- Non-transitive dice
- Nonoblock
- Nonogram solver
- Numbers k such that the last letter of k is the same as the first letter of k+1
- Numeric error propagation
- Numerical and alphabetical suffixes
O
- OLE automation
- Object serialization
- Old lady swallowed a fly
- One-time pad
- Order by pair comparisons
- Order disjoint list items
- Ordered partitions
P
- P-Adic numbers, basic
- P-Adic square roots
- P-value correction
- Padovan n-step number sequences
- Pairs with common factors
- Pan base non-primes
- Pancake numbers
- Paraffins
- Parameterized SQL statement
- Parametric polymorphism
- Parse an IP Address
- Parsing/RPN to infix conversion
- Parsing/Shunting-yard algorithm
- Partial function application
- Particle fountain
- Partition an integer x into n primes
- Pascal's triangle/Puzzle
- Password generator
- Peaceful chess queen armies
- Peano curve
- Pell numbers
- Penney's game
- Penta-power prime seeds
- Pentomino tiling
- Percentage difference between images
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Periodic table
- Permutations/Derangements
- Permutations/Rank of a permutation
- Pernicious numbers
- Phrase reversals
- Pig the dice game/Player
- Pinstripe/Printer
- Pisano period
- Playfair cipher
- Poker hand analyser
- Polynomial regression
- Primality by Wilson's theorem
- Prime conspiracy
- Prime numbers whose neighboring pairs are tetraprimes
- Prime triangle
- Primes - allocate descendants to their ancestors
- Primes: n*2^m+1
- Probabilistic choice
- Problem of Apollonius
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/Splitmix64
- Pythagoras tree
- Pythagorean quadruples
Q
R
- RCRPG
- Radical of an integer
- Ramanujan primes/twins
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Random Latin squares
- Random sentence from book
- Range consolidation
- Ranking methods
- Rare numbers
- Ray-casting algorithm
- Recaman's sequence
- Record sound
- Reduced row echelon form
- Reflection/Get source
- Reflection/List methods
- Reflection/List properties
- Rendezvous
- Repunit primes
- Resistor mesh
- Respond to an unknown method call
- Retrieve and search chat history
- Rhonda numbers
- Riordan numbers
- Rock-paper-scissors
- Rosetta Code/Count examples
- Rosetta Code/Find bare lang tags
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Rank languages by number of users
- Round-robin tournament schedule
- Runge-Kutta method
- Runtime evaluation
- Runtime evaluation/In an environment
S
- S-expressions
- SOAP
- SQL-based authentication
- Safe addition
- Sailors, coconuts and a monkey problem
- Same fringe
- Sealed classes and methods
- Search a list of records
- Search in paragraph's text
- Self numbers
- Send an unknown method call
- Sequence of primorial primes
- Sequence: nth number with exactly n divisors
- Set consolidation
- Set puzzle
- Set right-adjacent bits
- Set, the card game
- Seven-sided dice from five-sided dice
- Shortest common supersequence
- Sierpinski pentagon
- Sierpinski square curve
- Sieve of Pritchard
- Simple database
- Simple turtle graphics
- Simulate input/Keyboard
- Simulate input/Mouse
- Singular value decomposition
- Sisyphus sequence
- Sleeping Beauty problem
- Smallest number k such that k+2^m is composite for all m less than k
- Smarandache-Wellin primes
- Sokoban
- Solve a Hidato puzzle
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Sorensen–Dice coefficient
- Sort a list of object identifiers
- Sort an outline at every level
- Sort numbers lexicographically
- Sort stability
- Sort three variables
- Sorting algorithms/Cocktail sort with shifting bounds
- Sorting algorithms/Pancake sort
- Sorting algorithms/Patience sort
- Sorting algorithms/Permutation sort
- Sorting algorithms/Radix sort
- Sorting algorithms/Strand sort
- Special characters
- Special variables
- Speech synthesis
- Spelling of ordinal numbers
- Square form factorization
- Square-free integers
- Stable marriage problem
- Stack traces
- Start from a main routine
- State name puzzle
- Statistics/Basic
- Statistics/Normal distribution
- Steffensen's method
- Stem-and-leaf plot
- Stern-Brocot sequence
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Straddling checkerboard
- Strassen's algorithm
- Stream merge
- Substitution cipher
- Subtractive generator
- Suffixation of decimal numbers
- Sum and product puzzle
- Summarize and say sequence
- Super-Poulet numbers
- Super-d numbers
- Sutherland-Hodgman polygon clipping
- Sylvester's sequence
- Sync subtitles
T
- Table creation/Postal addresses
- Tarjan
- Teacup rim text
- 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/Unicode output
- Text processing/1
- Text processing/2
- Text processing/Max licenses in use
- The sieve of Sundaram
- Thiele's interpolation formula
- Tokenize a string with escaping
- Tonelli-Shanks algorithm
- Topological sort
- Topswops
- Transliterate English text using the Greek alphabet
- Tree datastructures
- Tropical algebra overloading
- Truth table
- Tupper's self-referential formula
- Twelve statements
- Twin primes whose sum is square number
- Two bullet roulette
U
- UPC
- URL parser
- UTF-8 encode and decode
- Ukkonen’s suffix tree construction
- Ultra useful primes
- Unbias a random generator
- Undulating numbers
- Unicode strings
- Universal Lambda Machine
- Universal Turing machine
V
- Vampire number
- Variable declaration reset
- Variadic fixed-point combinator
- Verhoeff algorithm
- Verify distribution uniformity/Chi-squared test
- Verify distribution uniformity/Naive
- Vigenère cipher/Cryptanalysis
- Vogel's approximation method
W
- War card game
- Wasteful, equidigital and frugal numbers
- Weird numbers
- Wieferich primes
- Wilson primes of order n
- Window creation/X11
- Window management
- Word ladder
- Word search
- Wordiff
- World Cup group stage
- Worthwhile task shaving
X
Y
Z
- Zebra puzzle
- Zeckendorf arithmetic
- Zhang-Suen thinning algorithm
- Zsigmondy numbers
- Zumkeller numbers
Draft tasks not implemented in Delphi
1
3
A
- A* search algorithm
- ASCII control characters
- Addition chains
- Addition-chain exponentiation
- Anaprimes
- Apéry's constant
- Arithmetic coding/As a generalized change of radix
- Aspect oriented programming
- Assertions in design by contract
- Audio frequency generator
- Autogram checker
B
- B-spline
- Bacon cipher
- Banker's algorithm
- Base58Check encoding
- Bilinear interpolation
- Binary coded decimal
- Binomial transform
- Bioinformatics/Subsequence
- Black box
- Blackjack strategy
- Boids
- Brace expansion using ranges
- Brzozowski algebraic method
C
- CLI-based maze-game
- CORDIC
- Card shuffles
- Carmichael lambda function
- Centroid of a set of N-dimensional points
- Chebyshev coefficients
- Checksumcolor
- Chess player
- Cipolla's algorithm
- Code segment unload
- Color separation
- Combinations with repetitions/Square digit chain
- Common sorted list
- Compiler/Preprocessor
- Compiler/Simple file inclusion pre processor
- Compiler/Verifying syntax
- Conjugate a Latin verb
- Consistent overhead byte stuffing
- Continued fraction convergents
- Convert CSV records to TSV
- Count the coins/0-1
- Countdown
- Cousin primes
- Create an executable for a program in an interpreted language
- Create an object/Native demonstration
- Create your own text control codes
- Cross compilation
- Curve that touches three points
- Cycle detection
D
- Data Encryption Standard
- Dating agency
- Decision tables
- Diophantine linear system solving
- Discrete Fourier transform
- Distinct palindromes within decimal numbers
- Divide a rectangle into a number of unequal triangles
- Doubly-linked list/Element removal
E
- Eisenstein primes
- Elevator simulation
- Engel expansion
- English cardinal anagrams
- Erdős–Woods numbers
- Execute CopyPasta Language
- Extended Straddling Checkerboard
- External sort
- Extreme primes
F
- Factor-perfect numbers
- Fibonacci heap
- Fibonacci matrix-exponentiation
- Forbidden numbers
- Free polyominoes enumeration
G
- Generalised floating point addition
- Generalised floating point multiplication
- Geohash
- Geometric algebra
- Getting the number of decimal places
- Goodstein Sequence
- Gradient descent
- Greed
H
I
- IPC via named pipe
- IRC gateway
- Iccanobif primes
- Input/Output for pairs of numbers
- Integer long division
- Interactive help
- Inventory sequence
J
K
L
- L-system
- Lagrange Interpolation
- 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
- Long stairs
- Longest common prefix
- Longest palindromic substrings
- Longest substrings without repeating characters
- Lucas-Carmichael numbers
M
- Magic numbers
- Make a backup file
- Marching squares
- Markov chain text generator
- McNaughton-Yamada-Thompson algorithm
- 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
- Next special primes
- Number triplets game
- Numerical integration/Adaptive Simpson's method
O
P
- Parse EBNF
- Particle swarm optimization
- Penrose tiling
- Permutations with repetitions
- Permutations with some identical elements
- Posit numbers/decoding
- Posit numbers/encoding
- Powerful numbers
- Price list behind API
- Prime reciprocal sum
- Process SMIL directives in XML data
- Proof
- Protecting Memory Secrets
R
- Railway circuit
- Rainbow
- 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
- Rice coding
- Robots
- Rodrigues’ rotation formula
- Roots of a cubic polynomial
- 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
- Segmentation fault protection
- Selection bias in clinical sciences
- Selective file copy
- Self-hosting compiler
- Separate the house number from the street name
- Shape-Machine
- Sierpinski curve
- Simulated annealing
- Simulated optics experiment/Data analysis
- Simulated optics experiment/Simulator
- Singly-linked list/Element removal
- Smallest enclosing circle problem
- Smallest numbers
- Smallest power of 6 whose decimal expansion contains n
- Snake and ladder
- Solve a Rubik's cube
- Solve hanging lantern problem
- Solve triangle solitaire puzzle
- Solving coin problems
- Sorting algorithms/Cycle sort
- Sorting algorithms/Tree sort on a linked list
- Special factorials
- Spoof game
- Square root by hand
- Starting a web browser
- Statistics/Chi-squared distribution
- Sturmian word
- Subset sum problem
- Suffix tree
- Sunflower fractal
- 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
- Time conventions and conversions
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Triangular numbers
- Type detection
U
- Unicode polynomial equation
- Unit testing
- Uno (card game)
- Untrusted environment
- Use a REST API
- Useless instructions
- 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
X
Tasks omitted from Delphi
A
D
H
I
P
T
End of List
Again, feel free to try your hand at any of the tasks listed on this page.