Tasks not implemented in Kotlin
Awareness
If Kotlin is a language you like, or are interested in, please inform your fellow members of the Kotlin community; this page can't be emptied without your and their participation.
If Kotlin is a language you like, or are interested in, please inform your fellow members of the Kotlin community; this page can't be emptied without your and their participation.
Tasks not implemented in Kotlin
1
2
A
- ABC words
- ADFGVX cipher
- ASCII art diagram converter
- Abelian sandpile model
- Abelian sandpile model/Identity
- Achilles numbers
- Active Directory/Search for a user
- Anadromes
- Anagram generator
- Arithmetic derivative
- Arithmetic numbers
- Ascending primes
B
- Babylonian spiral
- Bernstein basis polynomials
- Bin given limits
- Bioinformatics/Global alignment
- Bioinformatics/Sequence mutation
- Bitcoin/public point to address
- Bitmap/Bresenham's line algorithm
- Blum integer
- Boustrophedon transform
- Boyer-Moore string search
- Brilliant numbers
- Bézier curves/Intersections
C
- Calkin-Wilf sequence
- Canny edge detector
- Canonicalize CIDR
- Catmull–Clark subdivision surface
- Check if a polygon overlaps with a rectangle
- Chernick's Carmichael numbers
- Church numerals
- Colorful numbers
- Colour pinstripe/Printer
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter
- Composite numbers k with no single digit factors whose factors are all substrings of k
- Consecutive primes with ascending or descending differences
- Cullen and Woodall numbers
- Curzon numbers
- Cycles of a permutation
- Cyclops numbers
D
- De Polignac numbers
- Death Star
- Deceptive numbers
- Deconvolution/2D+
- Descending primes
- Determine sentence type
- Display an outline as a nested table
- Distance and Bearing
- Distributed programming
- Distribution of 0 digits in factorial series
- Dominoes
- Doomsday rule
- Duffinian numbers
E
- Earliest difference between prime gaps
- Elliptic Curve Digital Signature Algorithm
- Equal prime and composite sums
- Erdös-Selfridge categorization of primes
- Erdős-Nicolas numbers
- Euclid-Mullin sequence
- Euler's constant 0.5772...
- Events
- Executable library
- Execute Computer/Zero
- Exponentiation with infix operators in (or operating on) the base
F
- Faces from a mesh
- Factorial base numbers indexing permutations of a collection
- Factorions
- Factorize string into Lyndon words
- Fermat pseudoprimes
- Find Chess960 starting position identifier
- Find duplicate files
- Fixed length records
- Forest fire
- Fortunate numbers
- Function frequency
G
- GSTrans string conversion
- Gaussian primes
- Giuga numbers
- Goldbach's comet
- Golden ratio/Convergence
- Gotchas
- Graph colouring
- Greatest prime dividing the n-th cubefree number
H
- Halt and catch fire
- Harmonic series
- Hashtron inference
- Hex dump
- Hex words
- Home primes
- Honaker primes
- Hunt the Wumpus
I
- I'm a software engineer, get me out of here
- Idoneal numbers
- Inconsummate numbers in base 10
- Increasing gaps between consecutive Niven numbers
- Inner classes
- Isograms and heterograms
J
K
L
M
- Magic constant
- Magnanimous numbers
- Matrix digital rain
- Mayan calendar
- Mayan numerals
- Meissel–Mertens constant
- Merge and aggregate datasets
- Mertens function
- Minesweeper game
- Minimum multiple of m where digital sum equals m
- Minkowski question-mark function
- Modified random distribution
- Motzkin numbers
- Multi-base primes
- Mutex
N
- Nested templated data
- Numbers k such that the last letter of k is the same as the first letter of k+1
- Numbers which are not the sum of distinct squares
- Numbers which are the cube roots of the product of their proper divisors
- Numbers with equal rises and falls
- Numerical and alphabetical suffixes
O
P
- P-Adic numbers, basic
- P-Adic square roots
- Padovan n-step number sequences
- Pairs with common factors
- Palindrome dates
- Palindromic gapful numbers
- Pan base non-primes
- Particle fountain
- Partition function P
- Peano curve
- Pell numbers
- Penta-power prime seeds
- Periodic table
- Peripheral drift illusion
- Pig the dice game/Player
- Pinstripe/Printer
- Pisano period
- Play recorded sounds
- Primality by Wilson's theorem
- Prime numbers whose neighboring pairs are tetraprimes
- Prime triangle
- Primes: n*2^m+1
- Product of min and max prime factors
- Pseudo-random numbers/Middle-square method
- Pseudo-random numbers/Splitmix64
Q
R
- RCRPG
- Radical of an integer
- Ramanujan primes/twins
- Ramanujan's constant
- Random sentence from book
- Rendezvous
- Repunit primes
- Retrieve and search chat history
- Rhonda numbers
- Riordan numbers
- Rosetta Code/Count examples
- Rosetta Code/Find unimplemented tasks
- Rosetta Code/Fix code tags
- Rosetta Code/Rank languages by number of users
- Round-robin tournament schedule
- Ruth-Aaron numbers
S
- SHA-256 Merkle tree
- Same fringe
- Sealed classes and methods
- Search in paragraph's text
- Selectively replace multiple instances of a character within a string
- Set right-adjacent bits
- Set, the card game
- Sierpinski arrowhead curve
- Sierpinski square curve
- Sieve of Pritchard
- Simple turtle graphics
- 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 prime-digital sequence
- Smarandache-Wellin primes
- Soloway's recurring rainfall
- Sorensen–Dice coefficient
- Sort an outline at every level
- Sphenic numbers
- Square form factorization
- Steffensen's method
- Strassen's algorithm
- Sub-unit squares
- Sudan function
- Suffixation of decimal numbers
- Sum of elements below main diagonal of matrix
- Summarize primes
- Super-Poulet numbers
- Sylvester's sequence
- Sync subtitles
T
- Tau function
- Tau number
- Teacup rim text
- The sieve of Sundaram
- Transliterate English text using the Greek alphabet
- Tree datastructures
- Tree from nesting levels
- Tropical algebra overloading
- Tupper's self-referential formula
- Twin primes whose sum is square number
- Two's complement
U
- Ukkonen’s suffix tree construction
- Ultra useful primes
- Undulating numbers
- Universal Lambda Machine
- Untouchable numbers
V
W
- Wagstaff primes
- War card game
- Wasteful, equidigital and frugal numbers
- Wieferich primes
- Wilson primes of order n
- Window management
- Wireworld
- Word ladder
- Word wheel
- Wordiff
- Worthwhile task shaving
Z
Draft tasks not implemented in Kotlin
1
3
A
- ASCII control characters
- Addition-chain exponentiation
- Air mass
- Alternade words
- Anaprimes
- Append numbers at same position in strings
- Apéry's constant
- Audio frequency generator
- Audio overlap loop
- Autogram checker
B
- B-spline
- Base 16 numbers needing a to f
- 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
- Calmo numbers
- CalmoSoft primes
- Carmichael lambda function
- Centroid of a set of N-dimensional points
- Change e letters to i in words
- Changeable words
- Checksumcolor
- Chess player
- Collect and sort square numbers in ascending order from three lists
- Color separation
- Common list elements
- Common sorted list
- Compiler/Preprocessor
- Compiler/Simple file inclusion pre processor
- Compiler/Verifying syntax
- Concatenate two primes is also prime
- Conjugate a Latin verb
- Consistent overhead byte stuffing
- Continued fraction convergents
- Convert CSV records to TSV
- Coprime triplets
- Coprimes
- Count how many vowels and consonants occur in a string
- Count the coins/0-1
- Countdown
- Cousin primes
- Create an executable for a program in an interpreted language
- Create your own text control codes
- Cross compilation
- Cubic special primes
- Curve that touches three points
D
- Dating agency
- Day of the week of Christmas and New Year
- Digit fifth powers
- Diophantine linear system solving
- Discrete Fourier transform
- Distinct palindromes within decimal numbers
- Distinct power numbers
- Divide a rectangle into a number of unequal triangles
- Double Twin Primes
- Doubly-linked list/Element removal
E
- Eisenstein primes
- Elevator simulation
- Engel expansion
- English cardinal anagrams
- Erdős-primes
- Erdős–Woods numbers
- Even numbers which cannot be expressed as the sum of two twin primes
- Exactly three adjacent 3 in lists
- Execute CopyPasta Language
- Exponential digital sums
- Extended Straddling Checkerboard
- External sort
- Extreme primes
F
- Factor-perfect numbers
- Fibonacci matrix-exponentiation
- Find adjacent primes which differ by a square integer
- Find first missing positive
- Find minimum number of coins that make a given value
- Find prime n such that reversed n is also prime
- Find prime numbers of the form n*n*n+2
- Find square difference
- Find squares n where n+1 is prime
- Find words which contain the most consonants
- Find words which contains all the vowels
- Find words whose first and last three letters are equal
- Find words with alternating vowels and consonants
- First 9 prime Fibonacci number
- Forbidden numbers
- Four sides of square
- Frobenius numbers
G
- Generalised floating point multiplication
- Generate random numbers without repeating a value
- Geohash
- Goodstein Sequence
- Gradient descent
H
I
- IPC via named pipe
- IRC gateway
- Iccanobif primes
- Integer long division
- Interactive help
- Inventory sequence
- Iterators
J
K
L
- L-system
- Lagrange Interpolation
- Largest difference between adjacent primes
- Largest five adjacent number
- Largest palindrome product
- Largest prime factor
- Largest product in a grid
- Last list item
- 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
- Long stairs
- Longest palindromic substrings
- Longest substrings without repeating characters
- Lucas-Carmichael numbers
M
- Magic numbers
- Marching squares
- Matrix with two diagonals
- Maximum difference between adjacent elements of list
- McNaughton-Yamada-Thompson algorithm
- Minimum number of cells after, before, above and below NxN squares
- Minimum numbers of three lists
- Minimum primes
- Modulinos
- Morpion solitaire
- Mosaic matrix
- Multiline shebang
- Multiplicatively perfect numbers
- Multiton
N
- N-grams
- N-queens minimum and knights and bishops
- Native shebang
- Neighbour primes
- Next special primes
- Nimber arithmetic
- Number triplets game
- Numbers divisible by their individual digits, but not by the product of their digits.
- Numbers in base 10 that are palindromic in bases 2, 4, and 16
- Numbers in base-16 representation that cannot be written with decimal digits
- Numbers whose binary and ternary digit sums are prime
- Numbers whose count of divisors is prime
- Numeric separator syntax
O
- Odd and square numbers
- Odd squarefree semiprimes
- Odd words
- One-two primes
- Ormiston pairs
- Overloaded operators
P
- Palindromic primes
- Palindromic primes in base 16
- Pandigital prime
- Parse EBNF
- Penholodigital squares
- Permutations with some identical elements
- Permuted multiples
- Piprimes
- Pollard's rho algorithm
- Polynomial derivative
- Posit numbers/decoding
- Posit numbers/encoding
- Positive decimal integers with the digit 1 occurring exactly twice
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers p for which the sum of primes less than or equal to p is prime
- Prime numbers which contain 123
- Prime reciprocal sum
- Prime triplets
- Prime words
- Primes which contain only one odd digit
- Primes whose first and last number is 3
- Primes with digits in nondecreasing order
- Print itself
- Process SMIL directives in XML data
- Proof
- Protecting Memory Secrets
- Pseudorandom number generator image
Q
R
- Rainbow
- Ramanujan primes
- Range modifications
- Raster bars
- 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 order of lines in a text file while preserving the contents of each line
- Rice coding
- Rodrigues’ rotation formula
- Roots of a cubic polynomial
- Rosetta Code/List authors of task descriptions
- Rosetta Code/Run examples
- Run as a daemon or service
S
- SEND + MORE = MONEY
- Safe and Sophie Germain primes
- Safe mode
- Sanitize user input
- Segmentation fault protection
- Selection bias in clinical sciences
- Shape-Machine
- Shift list elements to left by 3
- Show the (decimal) value of a number of 1s appended with a 3, then squared
- Sierpinski curve
- Simulated annealing
- Simulated optics experiment/Data analysis
- Simulated optics experiment/Simulator
- Singly-linked list/Reversal
- Smallest enclosing circle problem
- Smallest multiple
- Smallest numbers
- Smallest power of 6 whose decimal expansion contains n
- Smallest square that begins with n
- Solve equations with substitution method
- Solve hanging lantern problem
- Solving coin problems
- Sort primes from list to a list
- Sort the letters of string in alphabetical order
- Special divisors
- Special neighbor primes
- Special pythagorean triplet
- Starting a web browser
- Statistics/Chi-squared distribution
- Steady squares
- Strange unique prime triplets
- Sturmian word
- Substring primes
- Sum data type
- Sum of first n cubes
- Sum of primes in odd positions is prime
- Sum of square and cube digits of an integer are primes
- Sum of two adjacent numbers are primes
- Summation of primes
- Sunflower fractal
- Syntax highlighting using Mediawiki formatting
- Szymański's algorithm
T
- Table creation
- Tamagotchi emulator
- Tetris
- Text completion
- Text to HTML
- Time conventions and conversions
- Time-based one-time password algorithm
- Triangular numbers
- Triplet of three numbers
- Two identical strings
U
- URL shortener
- Ulam numbers
- Unicode polynomial equation
- Unique characters
- Unique characters in each string
- Unit testing
- Uno (card game)
- Upside-down numbers
- 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
- WiktionaryDumps to words
- Wolstenholme numbers
- Words containing "the" substring
- Words from neighbour ones
X
Tasks omitted from Kotlin
End of List
Again, feel free to try your hand at any of the tasks listed on this page.