# Reports:Tasks not implemented in Rust

**Awareness**

If

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

## Contents

## Not implemented[edit]

These are currently not implemented in Rust. Please implement some if you can. If any tasks are not possible or too complex in Rust, they should not be on this list. To mark a task as such, add **{{omit from|Rust}}**, preserving the capitalization of the language, to that task. It will appear below under the "Not Considered" section.

### B

### C

- Calendar - for "REAL" programmers
- Canny edge detector
- Catmull–Clark subdivision surface
- Chat server
- Check Machin-like formulas
- Chernick's Carmichael numbers
- Chowla numbers
- Cistercian numerals
- Color of a screen pixel
- Color quantization
- Colour pinstripe/Display
- 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
- Cyclotomic polynomial

### D

- De Bruijn sequences
- Death Star
- Deconvolution/1D
- Deconvolution/2D+
- Deming's Funnel
- Determine if two triangles overlap
- Digital root/Multiplicative digital root
- Dinesman's multiple-dwelling problem
- Display an outline as a nested table
- Distributed programming
- Diversity prediction theorem
- Doubly-linked list/Definition
- Doubly-linked list/Traversal
- Draw a cuboid
- Draw a rotating cube

### E

### F

- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorions
- Faulhaber's formula
- Faulhaber's triangle
- Feigenbaum constant calculation
- Find largest left truncatable prime in a given base
- Find palindromic numbers in both binary and ternary bases
- First class environments
- First perfect square in base n with n unique digits
- First power of 2 that has leading decimal digits of 12
- Flow-control structures
- Formal power series
- Forward difference
- Fraction reduction
- Fractran
- Function frequency
- Function prototype
- Functional coverage tree

### G

### H

### I

### K

### L

- Lah numbers
- Largest number divisible by its digits
- Latin Squares in reduced form
- Law of cosines - triples
- List rooted trees
- Literals/String
- Long literals, with continuations
- Long multiplication
- Loops/Increment loop index within loop body
- Loops/With multiple ranges
- Loops/Wrong ranges
- Lucky and even lucky numbers

### M

- Matrix digital rain
- Median filter
- Memory layout of a data structure
- Merge and aggregate datasets
- Mertens function
- Metallic ratios
- Metronome
- Mian-Chowla sequence
- Minimal steps down to 1
- Minkowski question-mark function
- Modified random distribution
- Modular arithmetic
- Monads/List monad
- Monads/Maybe monad
- Monads/Writer monad
- Multi-dimensional array
- Multifactorial
- Multiple regression
- Multiplicative order
- Multisplit
- Musical scale

### N

### O

### P

- P-Adic numbers, basic
- P-Adic square roots
- P-value correction
- Padovan n-step number sequences
- Pancake numbers
- Paraffins
- Parametrized SQL statement
- Parsing/RPN to infix conversion
- Partial function application
- Pascal's triangle/Puzzle
- Pascal matrix generation
- Pathological floating point problems
- Peaceful chess queen armies
- Pell's equation
- Pentagram
- Percolation/Bond percolation
- Percolation/Mean cluster density
- Percolation/Mean run density
- Percolation/Site percolation
- Perfect totient numbers
- Permutations/Derangements
- Permutations/Rank of a permutation
- Permutations by swapping
- Pierpont primes
- Pig the dice game/Player
- Pinstripe/Display
- Pinstripe/Printer
- Plasma effect
- Play recorded sounds
- Playfair cipher
- Plot coordinate pairs
- Pointers and references
- Polymorphic copy
- Polymorphism
- Polynomial long division
- Polynomial regression
- Polyspiral
- Pragmatic directives
- Primality by Wilson's theorem
- Primes - allocate descendants to their ancestors
- Problem of Apollonius
- Pseudo-random numbers/Combined recursive generator MRG32k3a
- Pseudo-random numbers/PCG32
- Pseudo-random numbers/Xorshift star
- Pythagoras tree

### R

- Ramanujan's constant
- Random Latin squares
- Random sentence from book
- Ranking methods
- Rate counter
- Recaman's sequence
- Record sound
- Rendezvous
- Resistor mesh
- Retrieve and search chat history
- Roots of a quadratic function
- Rosetta Code/Find bare lang tags
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Rank languages by number of users
- Rosetta Code/Rank languages by popularity
- Runtime evaluation
- Runtime evaluation/In an environment

### S

- S-expressions
- 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
- Self numbers
- Send email
- Sequence: nth number with exactly n divisors
- Sequence: smallest number greater than previous term with exactly n divisors
- Sequence of primorial primes
- Set consolidation
- Set of real numbers
- Set puzzle
- Seven-sided dice from five-sided dice
- Shoelace formula for polygonal area
- Shortest common supersequence
- Sierpinski triangle
- Simple database
- Singleton
- Sokoban
- Solve a Holy Knight's tour
- Solve a Hopido puzzle
- Solve a Numbrix puzzle
- Solve the no connection puzzle
- Sort an outline at every level
- Sorting algorithms/Bead sort
- Sorting algorithms/Patience sort
- Sorting algorithms/Permutation sort
- Sorting algorithms/Strand sort
- Soundex
- Special characters
- Special variables
- Speech synthesis
- Square Form Factorization
- Stable marriage problem
- Stack traces
- Stair-climbing puzzle
- State name puzzle
- 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
- Strip block comments
- Strip control codes and extended characters from a string
- 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
- Superellipse
- Superpermutation minimisation

### T

- Table creation/Postal addresses
- Tau function
- 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
- Test integerness
- Text processing/1
- Text processing/2
- The Name Game
- Tonelli-Shanks algorithm
- Topswops
- Total circles area
- Tree datastructures
- Tree from nesting levels
- Twelve statements

### U

### V

### 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 Rust (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
- Change e letters to i in words
- Changeable words
- Chebyshev coefficients
- Checksumcolor
- Chemical calculator
- Chess player
- Cipolla's algorithm
- Code segment unload
- Combinations with repetitions/Square digit chain
- Common list elements
- Common sorted list
- 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
- Cousin primes
- Create an object/Native demonstration
- Cubic Special Primes
- Curve that touches three points
- Cycle detection

### D

### F

- Fibonacci heap
- Fibonacci matrix-exponentiation
- Find URI in text
- Find first and last set bit of a long integer
- Find first missing positive
- Find if a point is within a triangle
- Find prime n for that reversed n is also prime
- Find words which contains all the vowels
- Find words which contains more than 3 e vowels
- Find words which contains most consonants
- Find words which first and last three letters are equals
- Find words with alternating vowels and consonants
- Finite state machine
- Free polyominoes enumeration
- French Republican calendar

### G

### I

### L

### M

### N

- N-body problem
- NYSIIS
- Names to numbers
- Native shebang
- Next special primes
- Numbers divisible by their individual digits, but not by the product of their digits.
- Numbers which binary and ternary digit sum are prime
- Numbers with equal rises and falls
- Numbers with prime digits whose sum is 13
- Numeric separator syntax
- Numerical integration/Adaptive Simpson's method

### P

- Palindromic primes
- Parse EBNF
- Particle swarm optimization
- Penrose tiling
- Pentomino tiling
- Perceptron
- Permutations with some identical elements
- Piprimes
- Pisano period
- Polynomial synthetic division
- Powerful numbers
- Practical numbers
- Price list behind API
- Primes which sum of digits is 25
- Primes with digits in nondecreasing order
- 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
- Range modifications
- Raster bars
- 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/Run examples
- Rosetta Code/Tasks without examples
- Run as a daemon or service

### S

- Sattolo cycle
- Selective file copy
- Separate the house number from the street name
- Show the (decimal) value of a number of 1s appended with a 3, then squared
- Simulated annealing
- Sine wave
- Singly-linked list/Element removal
- Smallest enclosing circle problem
- Smallest power of 6 whose decimal expansion contains n
- Smallest square that begins with n
- 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
- Special Divisors
- Special factorials
- Spoof game
- Square root by hand
- Starting a web browser
- Strange numbers
- Strange plus numbers
- Strassen's algorithm
- Subset sum problem
- Substring primes
- Suffix tree
- Sum of divisors

### T

- Table creation
- Tamagotchi emulator
- Terminal control/Restricted width positional input/No wrapping
- Terminal control/Restricted width positional input/With wrapping
- Tetris
- Text completion
- Text to HTML
- Three word location
- Time-based one-time password algorithm
- Topological sort/Extracted top item
- Transportation problem
- Two bullet roulette
- Two identical strings

### U

### W

## Requiring Attention[edit]

### Examples[edit]

These tasks have implementations in Rust, 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 Rust 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 Rust was inappropriate for these tasks, or implementations of them would be unenlightening. Feel free to try your hand at them anyway.

### R

## End of List[edit]

Again, feel free to try your hand at any of the tasks listed on this page.