# Reports: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.

## Contents

## Not implemented[edit]

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

### A

### B

### C

- Calkin-Wilf sequence
- Canny edge detector
- Canonicalize CIDR
- Catmull–Clark subdivision surface
- Chernick's Carmichael numbers
- Church numerals
- Colour pinstripe/Printer
- Compiler/AST interpreter
- Compiler/code generator
- Compiler/lexical analyzer
- Compiler/syntax analyzer
- Compiler/virtual machine interpreter

### E

### F

### L

### M

### P

### R

### S

### 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 Kotlin (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
- Change e letters to i in words
- Changeable words
- Checksumcolor
- Chess player
- Common list elements
- Common sorted list
- Compiler/Simple file inclusion pre processor
- Compiler/Verifying syntax
- Consecutive Primes With Ascending Or Descending Differences
- Coprime triplets
- Coprimes
- Count how many vowels and consonants occur in a string
- Count the coins/0-1
- Cousin primes
- Cubic Special Primes
- Curve that touches three points
- Cyclops numbers

### D

### F

- Fibonacci matrix-exponentiation
- Find first missing positive
- Find prime n for that reversed n is also prime
- Find prime numbers of the form n*n*n+2
- 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
- Frobenius numbers

### L

### M

### N

- Native shebang
- Neighbour primes
- Next special primes
- Numbers divisible by their individual digits, but not by the product of their digits.
- Numbers in base-16 representation that cannot be written with decimal digits
- Numbers in base 10 that are palindromic in bases 2, 4, and 16
- Numbers n in which number 1 occur twice
- Numbers which binary and ternary digit sum are prime
- Numbers which count of divisors is prime
- Numbers with equal rises and falls
- Numbers with same digit set in base 10 and base 16
- Numeric separator syntax

### P

- Palindromic primes
- Palindromic primes in base 16
- Parse EBNF
- Permutations with some identical elements
- Piprimes
- Powerful numbers
- Practical numbers
- Price list behind API
- Prime numbers p which sum of prime numbers less or equal to p is prime
- Prime numbers which contain 123
- Prime triplets
- Prime words
- Primes whose first and last number is 3
- Primes with digits in nondecreasing order
- Print itself
- Process SMIL directives in XML data
- Proof
- Pseudo-random numbers/Splitmix64
- Pseudorandom number generator image

### R

### S

- Safe mode
- Shift list elements to left by 3
- Show the (decimal) value of a number of 1s appended with a 3, then squared
- Sierpinski arrowhead curve
- Sierpinski curve
- Sierpinski square curve
- Simulated annealing
- Smallest enclosing circle problem
- Smallest numbers
- Smallest power of 6 whose decimal expansion contains n
- Smallest square that begins with n
- Solving coin problems
- Sort the letters of string in alphabetical order
- Special Divisors
- Starting a web browser
- Strange unique prime triplets
- Substring primes
- Sum data type
- Sum of elements below main diagonal of matrix
- Sum of first n cubes
- Summarize primes
- Sylvester's sequence

### T

### U

### W

## Requiring Attention[edit]

### Examples[edit]

These tasks have implementations in Kotlin, 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.

### Other pages[edit]

These are other pages related to Kotlin 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 Kotlin was inappropriate for these tasks, or implementations of them would be unenlightening. Feel free to try your hand at them anyway.

### No pages found.

## End of List[edit]

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