Rosetta Code/Count examples/Full list

From Rosetta Code

Full output for the Rosetta Code/Count examples#Perl_6 task. Updated periodically.

This is something of a experiment. The top 10 languages have their completed task entries marked with a circled digit in the table so you can sort on the language to see which tasks have been done. Hold down control and click on several columns to do secondary, tertiary, etc. sorts. Ideally it would be nice to be able to generate the table for any language but it is fairly intensive to generate. Once a week is ok, on demand would be unsustainable.

See Rosetta_Code/Rank_languages_by_popularity/Full_list for a full language/task completion table.

Top ten programming languages by number of task examples completed:
① Go
② Perl 6
③ Phix
④ Julia
⑤ Python
⑥ Perl
⑦ Kotlin
⑧ Racket
⑨ C
⑩ Zkl
As of 2019-11-10T21:09:51Z :: Tasks: 976 :: Draft Tasks:229 :: Total Tasks: 1205 :: Total Examples: 64508
Count Task
439 Hello world/Text
300 99 Bottles of Beer
291 100 doors
287 FizzBuzz
267 Fibonacci sequence
264 Factorial
257 Comments
243 A+B
233 Empty program
223 Function definition
212 Loops/Infinite
208 Loops/While
207 Ackermann function  
207 Arrays
207 Reverse a string
196 Loops/For
188 Conditional structures
185 Greatest element of a list
184 Arithmetic/Integer
178 Greatest common divisor
177 Array concatenation
177 Averages/Arithmetic mean
176 Integer comparison
174 Repeat a string
172 Boolean values
169 Increment a numerical string
168 Loops/Downward for
167 Even or odd
165 Hello world/Graphical
165 Loops/For with a specified step
164 Copy a string
158 Apply a callback to an array
155 Loops/Foreach
155 String length
155 Sum and product of an array
154 Character codes
154 Hello world/Newline omission
153 String concatenation
152 Sieve of Eratosthenes
151 Binary digits
151 Loops/Do-while
150 Towers of Hanoi
149 Loops/N plus one half
149 Sum of a series
148 Loops/Break
148 Palindrome detection
147 Array length
147 Logical operations
147 String case
146 Generic swap
146 Integer sequence
145 Leap year
144 Rot-13
144 Sum of squares
143 Dot product
143 Filter
143 Hailstone sequence
143 Tokenize a string
142 Empty string
141 Execute a system command
139 Associative array/Creation
137 Sort an integer array
135 Sorting algorithms/Bubble sort
134 Caesar cipher
134 Determine if a string is numeric
133 Higher-order functions
133 User input/Text
132 File input/output
132 Guess the number
132 Quine
131 Command-line arguments
131 Factors of an integer
131 Remove duplicate elements
130 Hello world/Standard error
130 Read entire file
128 Day of the week
128 Roman numerals/Encode
127 Bitwise operations
127 Create a file
127 System time
126 Primality by trial division
125 Sorting algorithms/Quicksort
123 Check that file exists
123 Literals/String
123 Stack
122 Loop over multiple arrays simultaneously
122 Loops/Continue
122 Luhn test of credit card numbers
122 Pascal's triangle
122 Sleep
121 Mutual recursion
121 Substring
119 Happy numbers
119 Include a file  
119 Literals/Integer
118 Detect division by zero
118 Least common multiple
117 Flatten a list
116 Balanced brackets
115 Compound data type
115 Date format
115 Generate lower case ASCII alphabet
115 Variables
114 Associative array/Iteration
114 Binary search
114 Program termination
113 File size
113 Knuth shuffle
113 Loops/Nested
112 Formatted numeric output
112 Function composition
112 Null object
111 ABC Problem
111 Classes  
111 Mandelbrot set
111 Read a file line by line
111 Real constants and functions
111 Search a list
110 Averages/Root mean square
110 Ethiopian multiplication
110 Hostname  
110 N-queens problem
109 Delete a file
108 Averages/Median
108 Case-sensitivity of identifiers
108 Hash from two arrays
108 Input loop
108 Matrix multiplication
108 Matrix transposition
108 Rename a file
108 Zero to the zero power
107 Count in octal
107 Guess the number/With feedback
107 Multiplication tables
106 Environment variables
106 HTTP
106 Identity matrix
106 String matching
105 Count occurrences of a substring
105 Pick random element
105 Random numbers
105 Return multiple values
104 Accumulator factory
104 Haversine formula
104 Pangram checker
104 Perfect numbers
104 Sorting algorithms/Insertion sort
103 Anagrams
103 Arithmetic/Complex
103 Assertions
103 Find limit of recursion
103 Roman numerals/Decode
102 Align columns
102 Averages/Pythagorean means
102 Babbage problem
101 Catalan numbers
101 Horner's rule for polynomial evaluation
100 Exceptions
100 Infinity
100 Temperature conversion
100 Variadic function
99 Arithmetic-geometric mean
99 Conway's Game of Life
99 Program name
99 Run-length encoding
98 Evaluate binomial coefficients
98 Regular expressions
97 Combinations
97 Strip whitespace from a string/Top and tail
97 Substring/Top and tail
97 Trigonometric functions
97 Zig-zag matrix
96 Letter frequency
96 Strip a set of characters from a string
95 Permutations
95 String interpolation (included)
94 24 game
94 Anonymous recursion  
94 Prime decomposition
94 Short-circuit evaluation
94 Sorting algorithms/Selection sort
93 Comma quibbling
93 Levenshtein distance
93 Queue/Definition
93 Reverse words in a string
93 Shell one-liner
92 Collections
92 Enumerations
92 Sorting algorithms/Merge sort
91 Create a two-dimensional array at runtime
91 Look-and-say sequence
91 Nth root
91 Power set
91 Range extraction
91 String append
90 Bulls and cows
90 First-class functions
90 Middle three digits
90 Ordered words
90 Sierpinski triangle
89 One-dimensional cellular automata
89 Range expansion
89 Y combinator
88 Arbitrary-precision integers (included)
88 Create an HTML table
88 Exponentiation operator
88 Interactive programming    
88 Sequence of non-squares
87 Averages/Mode
87 Call a function
87 Random number generator (included)
87 Sum multiples of 3 and 5
87 Time a function
87 Vector products
87 Walk a directory/Non-recursively
86 Evolutionary algorithm
86 Inheritance/Single  
86 MD5
86 Sort using a custom comparator
86 String prepend
85 Cumulative standard deviation
85 Five weekends
85 Sorting algorithms/Gnome sort
84 Langton's ant
84 Monty Hall problem
83 Averages/Simple moving average
83 Forward difference
83 Sorting algorithms/Cocktail sort
83 Sum digits of an integer
82 Digital root
82 Entropy
82 Hamming numbers
82 Sierpinski carpet
82 Symmetric difference
82 Window creation  
81 Abstract type  
81 Abundant, deficient and perfect number classifications
81 CSV to HTML translation
81 Dragon curve
81 File modification time
81 Greatest subsequential sum
81 Harshad or Niven series
81 N'th
80 CSV data manipulation
80 Execute Brain****
80 JSON
80 The Twelve Days of Christmas
79 Menu
79 Price fraction
79 Sorting algorithms/Bogosort
78 Hello world/Line printer  
78 Josephus problem
78 Literals/Floating point
78 Map range
78 Queue/Usage
78 Simple windowed application  
78 Tree traversal
78 Web scraping
77 Box the compass
77 Catamorphism
77 Closures/Value capture
77 Introspection
77 Last Friday of each month
77 Monte Carlo methods
77 SEDOLs
76 Amicable pairs
76 Count in factors
76 Floyd's triangle
76 Gray code
76 Non-decimal radices/Convert
76 Number names  
76 Set
76 Sorting algorithms/Heapsort
76 String comparison
76 Walk a directory/Recursively
75 Number reversal game
75 Read a specific line from a file
75 Singly-linked list/Traversal
75 Sort an array of composite structures
75 Spiral matrix
75 URL decoding
75 XML/Input
74 Show the epoch
74 Top rank per group
73 Bitmap
73 Count the coins
73 Dynamic variable names  
73 Hofstadter Q sequence
73 Knapsack problem/0-1
73 Playing cards
73 Pythagorean triples
73 Terminal control/Clear the screen
73 Terminal control/Ringing the terminal bell
72 Concurrent computing
72 Find common directory path
72 Sockets  
72 Sorting algorithms/Shell sort
72 Strip comments from a string
72 URL encoding
71 Almost prime
71 Call an object method    
71 Date manipulation
71 Keyboard input/Obtain a Y or N response  
71 Lucas-Lehmer test
71 Man or boy test  
71 Order two numerical lists
71 Proper divisors
71 Roots of unity
71 Soundex  
70 Address of a variable    
70 CRC-32
70 Compare a list of strings
70 Fibonacci n-step number sequences
70 Kaprekar numbers
70 Linear congruential generator
70 Special characters
69 Averages/Mean angle
69 Bitmap/Bresenham's line algorithm
69 Exceptions/Catch an exception thrown in a nested call
69 Find the missing permutation
69 Hello world/Newbie
69 Hello world/Web server
69 Jensen's Device
69 List comprehensions
69 Long multiplication
69 Take notes on the command line
69 Unicode variable names
68 Empty directory
68 Equilibrium index
68 Here document
68 Multifactorial
68 Non-decimal radices/Output
68 Pi
68 Polymorphism
68 Singly-linked list/Element definition
68 Sorting algorithms/Counting sort
68 Word wrap
67 Calculating the value of e
67 Find the last Sunday of each month
67 Flow-control structures
67 Gamma function
67 Multiple distinct objects
67 Parsing/RPN calculator algorithm
67 Rock-paper-scissors  
67 Sorting algorithms/Comb sort
67 Stair-climbing puzzle
67 Sudoku
67 Vigenère cipher
67 Write float arrays to a text file
66 Anagrams/Deranged anagrams
66 Calendar
66 Convert seconds to compound duration
66 Execute HQ9+
66 IBAN
66 Longest common subsequence
66 Operator precedence
66 Semordnilap
66 Sorting algorithms/Stooge sort
66 Trabb Pardo–Knuth algorithm
65 Animation  
65 Enforced immutability
65 Modular inverse
65 Quaternion type
65 Read a configuration file
64 Call a foreign-language function  
64 Catalan numbers/Pascal's triangle
64 Closest-pair problem
64 Currying
64 Four bit adder
64 Guess the number/With feedback (player)
64 Maze generation
64 Named parameters  
64 Numerical integration
64 Phrase reversals
64 Sort disjoint sublist
63 AKS test for primes
63 Euler method
63 Fork
63 Largest int from concatenated ints
63 Magic squares of odd order
63 Munchausen numbers
63 Runtime evaluation    
63 Self-describing numbers
63 Variable size/Get
63 Write entire file
62 Arithmetic/Rational
62 HTTPS
62 Horizontal sundial calculations
62 Sort stability
62 Split a character string based on change of character
62 Text processing/Max licenses in use
62 Zeckendorf number representation
61 Benford's law
61 Combinations with repetitions
61 Constrained random points on a circle
61 Draw a sphere
61 One of n lines in a file
61 Repeat
61 SHA-1
61 SHA-256
61 Special variables  
61 Strip control codes and extended characters from a string
61 Van der Corput sequence
61 XML/Output
60 Euler's sum of powers conjecture
60 Extend your language    
60 Hofstadter-Conway $10,000 sequence
60 Inheritance/Multiple    
60 Jump anywhere
60 Morse code  
60 Optional parameters
60 Priority queue
60 Probabilistic choice
60 Roots of a quadratic function
60 Singly-linked list/Element insertion
60 Undefined values
59 Amb
59 Continued fraction
59 Documentation    
59 Fractal tree
59 Host introspection  
59 Memory allocation
59 Nested function
59 Pernicious numbers
59 Remove lines from a file
59 Roots of a function
58 15 Puzzle Game  
58 Chinese remainder theorem
58 Fast Fourier transform
58 Narcissistic decimal number
58 Population count
58 Runge-Kutta method
58 Unix/ls
58 Write language name in 3D ASCII
57 Arithmetic evaluation
57 Cholesky decomposition
57 Circles of given radius through two points
57 Miller–Rabin primality test
57 Old lady swallowed a fly
57 Partial function application
57 Reduced row echelon form
57 Sorting algorithms/Pancake sort
57 Sorting algorithms/Sleep sort
56 24 game/Solve
56 Animate a pendulum  
56 Globally replace text in several files
56 Knapsack problem/Unbounded
56 Non-decimal radices/Input
56 Sequence of primes by trial division
56 Stem-and-leaf plot
56 Test a function  
55 Binary strings
55 Factors of a Mersenne number
55 Forest fire    
55 Generator/Exponential
55 Get system command output
55 Huffman coding
55 Knapsack problem/Continuous
55 LZW compression
55 Plot coordinate pairs
55 Rep-string
55 Semiprime
54 Add a variable to a class instance at runtime      
54 Averages/Mean time of day
54 Brownian tree
54 Deal cards for FreeCell
54 Draw a clock
54 Extreme floating point values  
54 General FizzBuzz
54 Knight's tour
54 Mouse position  
54 Odd word problem
54 Scope modifiers
54 Sorting algorithms/Bead sort
54 Tic-tac-toe  
54 Unicode strings
54 XML/XPath    
53 Best shuffle
53 Compile-time calculation  
53 Define a primitive data type    
53 Delegates
53 Dinesman's multiple-dwelling problem
53 Hash join  
53 Modular exponentiation
53 Munching squares
53 Random number generator (device)
53 Runtime evaluation/In an environment    
53 Send email  
53 Singleton  
53 Sorting algorithms/Permutation sort
53 Stack traces
53 Terminal control/Display an extended character
53 Thue-Morse
52 Angle difference between two bearings
52 Barnsley fern
52 Dutch national flag problem
52 Fibonacci word
52 I before E except after C
52 Left factorials
52 Matrix-exponentiation operator  
52 Pointers and references  
52 Rosetta Code/Rank languages by popularity
52 Synchronous concurrency
52 Truncate a file  
52 Two Sum
52 User input/Graphical  
52 Yin and yang
51 4-rings or 4-squares puzzle  
51 Bitmap/Write a PPM file
51 Doubly-linked list/Element definition
51 Draw a cuboid
51 Multisplit
51 Statistics/Basic
50 9 billion names of God the integer
50 Dining philosophers
50 Emirp primes
50 Exponentiation order
50 Handle a signal
50 Inverted syntax
50 Maximum triangle path sum
50 Modulinos      
50 Non-continuous subsequences
50 Sort three variables
50 Topological sort
50 Truncatable primes  
50 Unbias a random generator
50 XML/DOM serialization  
49 Bernoulli numbers
49 Convert decimal number to rational
49 Department Numbers
49 First-class functions/Use numbers analogously  
49 Grayscale image
49 Integer overflow
49 Iterated digits squaring
49 JortSort
49 Leonardo numbers
49 Ludic numbers
49 Seven-sided dice from five-sided dice
49 Sierpinski triangle/Graphical
49 Wireworld    
48 Extract file extension
48 Longest increasing subsequence
48 Mad Libs  
48 Quickselect algorithm
48 Respond to an unknown method call  
48 Terminal control/Cursor positioning  
48 Ternary logic  
47 DNS query    
47 Heronian triangles
47 Text processing/2
47 Universal Turing machine
47 Zebra puzzle
46 2048    
46 Anti-primes
46 CUSIP
46 Call a function in a shared library
46 FASTA format
46 Keyboard input/Keypress check  
46 Polymorphic copy  
46 Polynomial regression
46 Stable marriage problem
46 Stern-Brocot sequence
46 Subleq
46 Text processing/1  
45 Cartesian product of two or more lists
45 Dijkstra's algorithm
45 Discordian date
45 Doubly-linked list/Traversal  
45 Fractran
45 Greyscale bars/Display
45 Move-to-front algorithm
45 Rate counter
44 Base64 encode data
44 Determine if only one instance is running  
44 Echo server  
44 GUI component interaction    
44 Last letter-first letter
44 Longest string challenge
44 Make directory path
44 Metaprogramming
44 Pascal matrix generation
44 Rosetta Code/Count examples    
44 Search a list of records
44 Send an unknown method call  
44 Smith numbers
44 Strip block comments
44 Terminal control/Coloured text
44 Validate International Securities Identification Number
43 Doubly-linked list/Element insertion
43 Extensible prime generator
43 Farey sequence
43 Gaussian elimination
43 Holidays related to Easter  
43 Image noise  
43 Longest common prefix
43 Parsing/Shunting-yard algorithm
43 Perfect shuffle
43 Pig the dice game  
43 Set consolidation
43 Shoelace formula for polygonal area
43 Verify distribution uniformity/Naive
42 Bitmap/Read a PPM file
42 Execute a Markov algorithm
42 History variables  
42 Hofstadter Figure-Figure sequences  
42 Naming conventions
42 Polynomial long division
42 Sattolo cycle
42 Visualize a tree
41 Active object
41 Append a record to the end of a text file
41 Archimedean spiral
41 Atomic updates
41 Chinese zodiac
41 Determinant and permanent
41 Element-wise operations
41 Find the intersection of two lines
41 Generate Chess960 starting position
41 Jaro distance
41 Narcissist
41 OpenGL    
41 Percentage difference between images
41 Secure temporary file
41 Show Ascii table
41 Sum to 100
41 Table creation/Postal addresses  
41 Tokenize a string with escaping
41 Twelve statements  
41 Variable size/Set
41 Vector
40 Bitmap/Flood fill  
40 Calendar - for "REAL" programmers  
40 Carmichael 3 strong pseudoprimes
40 Chaos game
40 Digital root/Multiplicative digital root
40 Doubly-linked list/Definition  
40 MD5/Implementation  
40 Password generator
40 Problem of Apollonius
40 Sparkline in unicode
40 Subtractive generator
40 Ulam spiral (for primes)
39 Average loop length
39 Colour bars/Display  
39 Hickerson series of almost integers
39 Knapsack problem/Bounded
39 Kronecker product
39 Parametric polymorphism      
39 Permutations/Derangements
39 Sorting algorithms/Strand sort
39 Word frequency  
38 Egyptian division
38 GUI enabling/disabling of controls    
38 McNuggets Problem
38 Sorting algorithms/Radix sort
38 Terminal control/Dimensions
37 Bulls and cows/Player
37 Combinations and permutations  
37 Elementary cellular automaton
37 GUI/Maximum window dimensions  
37 Inverted index  
37 Jewels and Stones
37 Permutations by swapping
37 Ray-casting algorithm
37 Self-referential sequence
37 Speech synthesis  
37 Start from a main routine  
37 Taxicab numbers
37 Text between
37 Topswops
37 Voronoi diagram
36 Cantor set
36 Constrained genericity        
36 Damm algorithm
36 Keyboard input/Flush the keyboard buffer  
36 Knuth's algorithm S
36 Magic squares of doubly even order  
36 Parallel calculations
36 Parsing/RPN to infix conversion
36 Pythagorean quadruples
36 QR decomposition  
36 Statistics/Normal distribution
36 Vampire number
36 Variable-length quantity
35 Abundant odd numbers
35 Aliquot sequence classifications
35 Attractive numbers
35 Bitmap/Midpoint circle algorithm    
35 Break OO privacy      
35 Color of a screen pixel      
35 Deepcopy  
35 Draw a pixel  
35 Events  
35 Function prototype  
35 LU decomposition
35 Longest Common Substring
35 Loops/Increment loop index within loop body
35 Object serialization  
35 Order disjoint list items  
35 Pascal's triangle/Puzzle
35 Permutation test
35 Permutations with repetitions  
35 S-Expressions  
35 Sailors, coconuts and a monkey problem
35 Water collected between towers
34 Balanced ternary    
34 Input/Output for Pairs of Numbers
34 MD4  
34 Metered concurrency
34 Minesweeper game    
34 Multiline shebang    
34 Numerical integration/Gauss-Legendre Quadrature
34 Pathological floating point problems
34 Square but not cube
34 Terminal control/Unicode output
33 Colour pinstripe/Display  
33 Cramer's rule
33 Find palindromic numbers in both binary and ternary bases
33 Flipping bits game  
33 Floyd-Warshall algorithm
33 Julia set
33 Musical scale    
33 Penney's game
33 Prime conspiracy
33 Primorial numbers
33 RPG Attributes Generator
33 Scope/Function names and labels
33 Spinning rod animation/Text
33 Terminal control/Hiding the cursor
33 Terminal control/Inverse video
33 Test integerness
32 Bitcoin/address validation
32 Bitmap/Bézier curves/Cubic  
32 Bitwise IO
32 Currency
32 Fibonacci word/fractal
32 Maze solving
32 Ordered Partitions
32 Parametrized SQL statement  
32 Ranking methods
32 Rosetta Code/Find bare lang tags    
32 Sorting Algorithms/Circle Sort
32 UTF-8 encode and decode
31 Base64 decode data  
31 Casting out nines  
31 File extension is in extensions list
31 Input/Output for Lines of Text
31 Parse command-line arguments
31 Pinstripe/Display  
31 RIPEMD-160  
31 RSA code
31 Recaman's sequence  
31 Set puzzle
31 Solve the no connection puzzle  
31 Straddling checkerboard
31 Subset sum problem
31 Sutherland-Hodgman polygon clipping    
31 Topic variable  
30 Arithmetic-geometric mean/Calculate Pi  
30 Bitmap/Histogram  
30 Brace expansion  
30 Chowla numbers  
30 Continued fraction/Arithmetic/Construct from rational number
30 Create a file on magnetic tape    
30 Galton box animation  
30 Integer roots
30 Kahan summation
30 Kernighans large earthquake problem
30 Lychrel numbers  
30 Metronome  
30 Pythagoras tree
30 Read a file character by character/UTF8
30 Resistor mesh
30 Simple database  
30 Solve a Hidato puzzle
30 Truth table  
29 Abbreviations, automatic    
29 Bitmap/Bézier curves/Quadratic  
29 Check output device is a terminal  
29 Conjugate transpose  
29 Executable library  
29 Hilbert curve
29 Keyboard macros  
29 Multiple regression  
29 Multiplicative order
29 Pattern matching      
29 Sort a list of object identifiers  
29 URL parser    
29 Van Eck sequence  
29 Write to Windows event log  
29 Zhang-Suen thinning algorithm  
28 Check Machin-like formulas    
28 Checkpoint synchronization
28 Cycle detection
28 Decimal floating point number to binary  
28 Deconvolution/1D
28 Entropy/Narcissist
28 Execute SNUSP  
28 Fusc sequence
28 MAC Vendor Lookup
28 Memory layout of a data structure    
28 Negative base numbers
28 Numeric error propagation  
28 Pentagram
28 Rosetta Code/Find unimplemented tasks      
28 Set of real numbers
28 Substitution Cipher
28 Terminal control/Preserve screen
28 Totient function
28 Use another language to call a function      
28 Xiaolin Wu's line algorithm  
27 Convex hull
27 Copy stdin to stdout
27 Display a linear combination
27 Egyptian fractions  
27 Find the intersection of a line with a plane
27 First class environments
27 Formal power series
27 Implicit type conversion
27 Partition an integer X into N primes  
27 Poker hand analyser  
27 Rosetta Code/Fix code tags    
27 Terminal control/Cursor movement
27 The Name Game  
27 Verify distribution uniformity/Chi-squared test
26 Active Directory/Connect      
26 Arena storage pool  
26 Chat server  
26 Death Star    
26 Distributed programming      
26 FTP
26 Feigenbaum constant calculation
26 Find largest left truncatable prime in a given base
26 HTTPS/Authenticated
26 Idiomatically determine all the lowercase and uppercase letters  
26 Largest number divisible by its digits  
26 Magic 8-Ball
26 Modular arithmetic
26 Multi-dimensional array  
26 Nautical bell  
26 Paraffins
26 Pragmatic directives  
26 Reflection/List properties      
26 Safe addition  
26 Sort numbers lexicographically
26 Sorting algorithms/Cycle sort  
26 Sorting algorithms/Patience sort
26 State name puzzle
26 Table creation      
26 Update a configuration file  
26 Window creation/X11  
25 Check input device is a terminal  
25 Create an object at a given address      
25 Cuban primes  
25 Euler's identity
25 Faulhaber's formula  
25 Find first and last set bit of a long integer
25 Go Fish    
25 Image convolution  
25 Natural sorting
25 Old Russian measure of length  
25 Ramsey's theorem    
25 Reflection/List methods    
25 Same Fringe  
25 Square-free integers
25 Textonyms  
25 The ISAAC Cipher  
24 Abbreviations, simple  
24 Apply a digital filter (direct form II transposed)  
24 Bacon cipher
24 Cheryl's Birthday
24 Church Numerals    
24 Honeycombs    
24 Mian-Chowla sequence    
24 Perfect totient numbers
24 Polyspiral  
24 RCRPG    
24 Solve a Holy Knight's tour    
24 Sum and Product Puzzle  
23 Card shuffles
23 Chaocipher  
23 Decision tables  
23 Determine if two triangles overlap
23 Faulhaber's triangle
23 Hough transform
23 Make a backup file    
23 Nim Game  
23 Simulate input/Keyboard      
23 Stream Merge    
23 Superellipse
23 Type detection  
23 Welch's t-test
22 AVL tree          
22 Birthday problem
22 Compiler/lexical analyzer    
22 Dice game probabilities
22 Function frequency    
22 K-means++ clustering    
22 Loops/with multiple ranges  
22 Machine code      
22 Magic squares of singly even order  
22 Main step of GOST 28147-89
22 Percolation/Mean run density
22 Permutations/Rank of a permutation
22 Plasma effect  
22 Play recorded sounds            
22 Sequence of primorial primes
22 Sequence: smallest number greater than previous term with exactly n divisors  
22 Superpermutation minimisation
22 Thiele's interpolation formula  
22 Total circles area
22 World Cup group stage  
21 Abbreviations, easy  
21 Base58Check encoding  
21 Brazilian numbers  
21 Cipolla's algorithm  
21 Cut a rectangle
21 Eban numbers  
21 Generate random chess position  
21 Idiomatically determine all the characters that can be used for symbols  
21 Koch curve
21 Linux CPU utilization
21 Loops/Wrong ranges
21 Nonoblock  
21 Parallel Brute Force
21 Pig the dice game/Player      
21 Record sound        
21 Reverse the gender of a string    
21 SOAP        
21 Safe primes and unsafe primes    
21 Tonelli-Shanks algorithm  
21 Video display modes      
21 Window management    
21 Word break problem  
21 Yahoo! search interface          
20 A* search algorithm    
20 AudioAlarm        
20 Draw a rotating cube  
20 Elementary cellular automaton/Random Number Generator  
20 Kronecker product based fractals  
20 Long primes
20 Median filter
20 Mersenne primes    
20 Parse an IP Address  
20 Perlin noise
20 Playfair cipher      
20 Ramer-Douglas-Peucker line simplification  
20 Sokoban  
20 Solve a Numbrix puzzle  
19 Active Directory/Search for a user            
19 Bilinear interpolation
19 Chemical Calculator  
19 Create an object/Native demonstration  
19 Diversity prediction theorem  
19 Elliptic curve arithmetic  
19 Law of cosines - triples  
19 Markov chain text generator    
19 N-body problem    
19 Sequence: smallest number with exactly n divisors  
19 Sierpinski pentagon  
19 Simulate input/Mouse      
19 Solve a Hopido puzzle  
18 Burrows–Wheeler transform  
18 Chebyshev coefficients  
18 Color quantization  
18 Deming's Funnel  
18 Eertree  
18 Lucky and even lucky numbers    
18 Mastermind    
18 Mind boggling card trick    
18 Native shebang    
18 Pell's equation    
18 Shortest common supersequence
18 Strong and weak primes      
18 Weird numbers    
17 Addition chains
17 Assertions in design by contract      
17 Bell numbers  
17 Bitcoin/public point to address  
17 Commatizing numbers    
17 Data Encryption Standard        
17 Days between dates      
17 Elementary cellular automaton/Infinite length  
17 First perfect square in base N with N unique digits      
17 Four is magic  
17 Index finite lists of positive integers  
17 Joystick position              
17 Levenshtein distance/Alignment  
17 Orbital elements    
17 P-value correction  
17 Percolation/Site percolation
17 Readline interface    
17 Reflection/Get source      
17 SQL-based authentication    
17 Selective File Copy      
17 Snake And Ladder    
17 Untrusted environment    
16 Arithmetic coding/As a generalized change of radix    
16 Aspect Oriented Programming    
16 Code segment unload      
16 Color wheel  
16 Find duplicate files      
16 Finite state machine    
16 Fixed length records      
16 HTTPS/Client-authenticated  
16 I.Q. Puzzle  
16 Just in time processing on a character stream
16 K-d tree  
16 Knuth's power tree  
16 Kolakoski sequence  
16 Kosaraju  
16 List rooted trees  
16 Monads/List monad      
16 Montgomery reduction  
16 Perceptron        
16 Sexy primes  
16 Vogel's approximation method  
16 Zeckendorf arithmetic    
15 Compiler/code generator      
15 Factorions    
15 Free polyominoes enumeration        
15 Humble numbers    
15 Hunt The Wumpus        
15 Intersecting Number Wheels        
15 Monads/Maybe monad          
15 NYSIIS  
15 Names to numbers    
15 Nonogram solver      
15 Numeric separator syntax    
15 Peano curve  
15 Percolation/Bond percolation
15 Percolation/Mean cluster density
15 Polynomial synthetic division    
15 Primes - allocate descendants to their ancestors
15 Range consolidation    
15 Rendezvous      
15 Retrieve and search chat history      
15 Self-hosting compiler        
15 Separate the house number from the street name    
15 Successive prime differences      
15 Sum data type        
15 Sunflower fractal    
15 Vigenère cipher/Cryptanalysis    
14 100 prisoners      
14 Bitmap/Read an image through a pipe    
14 Compiler/virtual machine interpreter      
14 EKG sequence convergence  
14 Find URI in text          
14 Gauss-Jordan matrix inversion    
14 Imaginary base numbers      
14 Most frequent k chars distance      
14 Nested templated data    
14 Particle Swarm Optimization        
14 Smarandache prime-digital sequence      
14 Spelling of ordinal numbers    
14 Teacup rim text      
14 Terminal control/Positional read    
14 Vibrating rectangles    
13 Compare sorting algorithms' performance        
13 Compiler/syntax analyzer        
13 Draw pixel 2    
13 Fermat numbers    
13 Fraction reduction    
13 Lah numbers      
13 Matrix chain multiplication    
13 Mayan numerals      
13 Monads/Writer monad            
13 Numerical integration/Adaptive Simpson's method  
13 Proof                
13 Transportation problem        
13 Word search      
13 XML Validation        
12 Abelian sandpile model        
12 Approximate Equality    
12 Bitmap/PPM conversion through a pipe    
12 Compiler/AST interpreter      
12 De Bruijn sequences  
12 Deconvolution/2D+      
12 File size distribution
12 Generalised floating point addition      
12 Geometric algebra          
12 N-smooth numbers      
12 Permutations with some identical elements        
12 Random Latin Squares        
12 Sequence: nth number with exactly n divisors    
12 Singly-linked list/Element removal      
12 Snake          
12 Suffix tree      
12 Topological sort/Extracted top item    
11 Angles (geometric), normalization and conversion    
11 Chernick's Carmichael numbers      
11 Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N)      
11 OpenWebNet Password      
11 Pierpont primes    
11 Safe mode          
11 Stirling numbers of the first kind        
11 Stirling numbers of the second kind        
11 Zumkeller numbers    
10 15 puzzle solver          
10 Banker's algorithm        
10 Factorial base numbers indexing permutations of a collection      
10 Interactive Help        
10 Penrose tiling      
10 Print debugging statement      
10 Sine wave        
10 Tarjan    
10 VList          
9 ASCII art diagram converter          
9 Audio frequency generator              
9 Canny edge detector            
9 Catmull–Clark subdivision surface            
9 Combinations with repetitions/Square Digit Chain      
9 Determine if a string has all the same characters          
9 Four is the number of letters in the ...    
9 Functional coverage tree        
9 Latin Squares in reduced form          
9 Launch rocket with countdown and acceleration in stdout      
9 Matrix Digital Rain          
9 Parse EBNF            
9 Peaceful chess queen armies      
9 Run as a daemon or service            
9 Suffixation of decimal numbers      
8 21 Game        
8 Checksumcolor        
8 French Republican calendar          
8 Greed            
8 Metallic ratios          
8 Morpion solitaire            
8 Numerical and alphabetical suffixes        
8 Pentomino tiling          
8 Railway circuit        
8 Ramanujan's constant          
8 Resistance Calculator        
8 Simulated annealing            
8 Sorting algorithms/Tree sort on a linked list          
8 Starting a web browser          
8 Super-d numbers            
8 Tetris                  
8 Time-based One-time Password Algorithm            
8 Unit testing          
7 Colour pinstripe/Printer            
7 Curve that touches three points        
7 External sort          
7 Gapful numbers            
7 Gradient descent        
7 IPC via named pipe            
7 Multidimensional Newton-Raphson method        
7 One-time pad        
7 Pinstripe/Printer              
7 Resistance Network Calculator      
7 Rosetta Code/Rank languages by number of users        
7 Spoof game          
7 User defined pipe and redirection operators            
7 Using a Speech engine to highlight words                  
6 16 Puzzle Game              
6 Determine if a string has all unique characters            
6 OpenGL Pixel Shader            
6 OpenGL/Utah Teapot            
6 Rare numbers                
6 Robots            
6 Rosetta Code/Tasks without examples          
5 Addition-chain exponentiation            
5 Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2)              
5 Display an outline as a nested table            
5 Fibonacci heap            
5 Hexapawn              
5 Mayan calendar          
5 Remote agent/Agent interface              
5 Remote agent/Agent logic              
5 Remote agent/Simulation              
5 Rosetta Code/Run examples                  
5 Text to HTML              
5 Tree datastructures          
4 Boids              
4 Chess player              
4 Elliptic Curve Digital Signature Algorithm              
4 I'm a software engineer, get me out of here              
4 OLE Automation                
4 Terminal control/Restricted width positional input/No wrapping            
4 Terminal control/Restricted width positional input/With wrapping            
4 Using the Meetup.com API                
3 Audio Overlap Loop                  
3 Execute CopyPasta Language                
3 Generalised floating point multiplication                
3 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                
3 Process SMIL directives in XML data                
3 Solve a Rubik's Cube              
3 Tamagotchi emulator                    
2 Black Box                  
2 Raster bars                
2 Recursive descent parser generator                    
2 Unicode polynomial equation                
1 15 Puzzle Game in 3D                    
1 IRC gateway                    
1 Rosetta Code/List authors of task descriptions                  
1 Solving coin problems                  
1 Ukkonen’s Suffix Tree Construction                  
1 Waveform analysis/Doh ray me                  
1 Waveform analysis/Top and tail                  
0 Blackjack strategy                    
0 Chess player/Move generation                    
0 Chess player/Program options and user interface                    
0 Chess player/Search and evaluation                    
0 Rosetta Code/Tasks sorted by average lines of code                    
0 Weather Routing