# 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
- Append a record to the end of a text file
- Approximate Equality
- Arithmetic-geometric mean/Calculate Pi
- Associative array/Merging
- Averages/Mean time of day

### B

### C

- Canny edge detector
- Cartesian product of two or more lists
- Casting out nines
- Catmull–Clark subdivision surface
- Chaocipher
- Chaos game
- Check Machin-like formulas
- Chernick's Carmichael numbers
- Chinese zodiac
- Church Numerals
- Circles of given radius through two points
- Color of a screen pixel
- Color quantization
- 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
- Fairshare between two and more
- Farey sequence
- Fermat numbers
- Fibonacci word/fractal
- File extension is in extensions list
- Find largest left truncatable prime in a given base
- First perfect square in base N with N unique digits
- First power of 2 that has leading decimal digits of 12
- Fixed length records
- Floyd-Warshall algorithm
- Four is magic
- Four is the number of letters in the ...
- Fraction reduction
- Function frequency
- Functional coverage tree

### G

### H

### I

- I before E except after C
- Idiomatically determine all the characters that can be used for symbols
- Idiomatically determine all the lowercase and uppercase letters
- Imaginary base numbers
- Increasing gaps between consecutive Niven numbers
- Index finite lists of positive integers
- Intersecting Number Wheels

### K

### L

- Lah numbers
- Largest number divisible by its digits
- Latin Squares in reduced form
- Left factorials
- Long primes
- Long year?
- Longest Common Substring
- Longest increasing subsequence
- Loops/Increment loop index within loop body
- Loops/Wrong ranges
- Loops/with multiple ranges
- Lucky and even lucky numbers
- Lychrel numbers

### M

### N

### P

- P-value correction
- Palindrome dates
- Palindromic gapful numbers
- Paraffins
- Parse an IP Address
- Parsing/Shunting-yard algorithm
- Partition an integer X into N primes
- 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
- Permutations/Rank of a permutation
- Permutations by swapping
- Pierpont primes
- Pinstripe/Printer
- Plasma effect
- Play recorded sounds
- Poker hand analyser
- Polyspiral
- Prime conspiracy
- Primes - allocate descendants to their ancestors
- Primorial numbers
- Pythagorean quadruples

### R

- RCRPG
- RPG Attributes Generator
- Ramanujan's constant
- Ramer-Douglas-Peucker line simplification
- Ranking methods
- Rare numbers
- 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

- SOAP
- SQL-based authentication
- Safe primes and unsafe primes
- Sailors, coconuts and a monkey problem
- Scope/Function names and labels
- 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
- Sorting algorithms/Bead sort
- 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
- Sum multiples of 3 and 5
- Sunflower fractal
- Super-d numbers
- Superpermutation minimisation

### T

- Table creation/Postal addresses
- Tarjan
- Taxicab numbers
- 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
- 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.

### 2

### A

### B

### C

- Card shuffles
- Chebyshev coefficients
- Checksumcolor
- Chemical Calculator
- Cheryl's Birthday
- Chess player
- Cipolla's algorithm
- Circular primes
- 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

### D

### E

### F

- Factorions
- Faulhaber's formula
- Faulhaber's triangle
- 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
- Finite state machine
- Fivenum
- Free polyominoes enumeration
- French Republican calendar

### G

### H

### 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
- Levenshtein distance/Alignment
- Line circle intersection
- Linux CPU utilization
- List rooted trees
- Logistic Curve Fitting in Epidemiology
- Long literals, with continuations

### 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
- Monads/List monad
- Monads/Maybe monad
- Monads/Writer monad
- Montgomery reduction
- Morpion solitaire
- Most frequent k chars distance
- Multidimensional Newton-Raphson method
- Musical scale
- Möbius function

### N

### P

- Parse EBNF
- Parse command-line arguments
- Particle Swarm Optimization
- Penrose tiling
- Pentomino tiling
- Perceptron
- Perlin noise
- Permutations with repetitions
- Permutations with some identical elements
- Pisano period
- Playfair cipher
- Polynomial synthetic division
- Powerful numbers
- Primalty by Wilson's theorem
- Print debugging statement
- Process SMIL directives in XML data
- Proof

### R

- Railway circuit
- Ramsey's theorem
- Random Latin Squares
- 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
- Sierpinski arrowhead curve
- Sierpinski curve
- Sierpinski square curve
- 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
- 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 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.