# Reports:Tasks not implemented in Ada

**Awareness**

If

**Ada**is a language you like, or are interested in, please inform your fellow members of the Ada community; this page can't be emptied without your and their participation.

## Contents

## Not implemented[edit]

These are currently not implemented in Ada. Please implement some if you can. If any tasks are not possible or too complex in Ada, they should not be on this list. To mark a task as such, add **{{omit from|Ada}}**, 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
- Active Directory/Connect
- Active Directory/Search for a user
- Aliquot sequence classifications
- Angles (geometric), normalization and conversion
- Arithmetic-geometric mean/Calculate Pi
- Associative array/Merging
- Averages/Mean time of day

### B

### C

- Calkin-Wilf sequence
- Canny edge detector
- Canonicalize CIDR
- Cartesian product of two or more lists
- Casting out nines
- Catmull–Clark subdivision surface
- Chaos game
- Check Machin-like formulas
- Chernick's Carmichael numbers
- Cheryl's birthday
- Chinese zodiac
- Church numerals
- Circles of given radius through two points
- Circular primes
- Cistercian numerals
- Color of a screen pixel
- Color quantization
- 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
- Continued fraction/Arithmetic/Construct from rational number
- Create a file on magnetic tape
- Cuban primes
- Currency
- Currying
- Cut a rectangle
- Cyclotomic polynomial

### D

### E

### F

- FTP
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorions
- Fairshare between two and more
- Farey sequence
- Faulhaber's formula
- Faulhaber's triangle
- 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 the intersection of a line with a plane
- First perfect square in base n with n unique digits
- First power of 2 that has leading decimal digits of 12
- Fivenum
- Floyd-Warshall algorithm
- Four is magic
- Four is the number of letters in the ...
- Function frequency
- Functional coverage tree

### G

### H

### I

### K

### L

- Lah numbers
- Largest number divisible by its digits
- Latin Squares in reduced form
- Left factorials
- Levenshtein distance/Alignment
- List rooted trees
- Long literals, with continuations
- Long primes
- Longest common substring
- Longest increasing subsequence
- Loops/Increment loop index within loop body
- Loops/With multiple ranges
- Loops/Wrong ranges
- Lucky and even lucky numbers
- Lychrel numbers

### M

- Machine code
- Magic squares of doubly even order
- Magic squares of singly even order
- Main step of GOST 28147-89
- Mayan numerals
- Merge and aggregate datasets
- Mertens function
- Metallic ratios
- Mind boggling card trick
- Minimal steps down to 1
- Minkowski question-mark function
- Monads/List monad
- Monads/Maybe monad
- Monads/Writer monad
- Musical scale

### N

### P

- P-value correction
- Palindromic gapful numbers
- Paraffins
- Parse an IP Address
- Parsing/Shunting-yard algorithm
- Partition an integer x into n primes
- Partition function P
- Password generator
- Peaceful chess queen armies
- Peano curve
- Pell's equation
- Penney's game
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Perfect totient numbers
- Perlin noise
- Permutations/Rank of a permutation
- Permutations by swapping
- Pierpont primes
- Pinstripe/Printer
- Plasma effect
- Play recorded sounds
- Playfair cipher
- Poker hand analyser
- Polyspiral
- 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

- RCRPG
- RPG attributes generator
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Ranking methods
- Rare numbers
- Read a file character by character/UTF8
- Recaman's sequence
- Record sound
- Reflection/Get source
- Reflection/List methods
- Reflection/List properties
- Retrieve and search chat history
- Rosetta Code/Find bare lang tags
- Rosetta Code/Fix code tags

### S

- SHA-256 Merkle tree
- SOAP
- SQL-based authentication
- Safe primes and unsafe primes
- Sailors, coconuts and a monkey problem
- Scope/Function names and labels
- Self numbers
- Sequence: nth number with exactly n divisors
- Sequence: smallest number with exactly n divisors
- Sequence of primorial primes
- Set of real numbers
- Sexy primes
- Shortest common supersequence
- Sierpinski pentagon
- Sierpinski triangle/Graphical
- Simple database
- Simulate input/Keyboard
- Simulate input/Mouse
- Smarandache prime-digital sequence
- Sokoban
- Solve a Hidato puzzle
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Sort an outline at every level
- Sorting Algorithms/Circle Sort
- Sorting algorithms/Bead sort
- Sorting algorithms/Cocktail sort with shifting bounds
- Sorting algorithms/Patience sort
- Sorting algorithms/Permutation sort
- Sorting algorithms/Strand sort
- Sparkline in unicode
- Speech synthesis
- Spelling of ordinal numbers
- Square-free integers
- State name puzzle
- Statistics/Normal distribution
- Stirling numbers of the first kind
- Stirling numbers of the second kind
- Straddling checkerboard
- Stream merge
- Strong and weak primes
- Successive prime differences
- Suffixation of decimal numbers
- Sum and product puzzle
- Sunflower fractal
- Super-d numbers
- Superpermutation minimisation

### T

- Table creation/Postal addresses
- Tarjan
- Taxicab numbers
- Teacup rim text
- Terminal control/Coloured text
- Terminal control/Cursor movement
- Terminal control/Dimensions
- Terminal control/Hiding the cursor
- Terminal control/Positional read
- Terminal control/Preserve screen
- Terminal control/Unicode output
- Test integerness
- Textonyms
- The ISAAC Cipher
- Tokenize a string with escaping
- Tonelli-Shanks algorithm
- Topic variable
- Total circles area
- Tree datastructures
- Truth table

### W

### 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 Ada (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
- Create an object/Native demonstration
- 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 suffix
- Longest palindromic substrings

### M

### 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
- Proof
- Pseudo-random numbers/Splitmix64
- Pseudorandom number generator image

### R

- Railway circuit
- Ramsey's theorem
- Random Latin squares
- Range modifications
- 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
- 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 Ada, 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.

### No pages found.

### Other pages[edit]

These are other pages related to Ada 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 Ada 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.