Rosetta Code/Count examples/Full list/Tier 3

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Revision as of 23:01, 14 February 2021 by Thundergnat (talk | contribs) (Update full list output)

Third tier of languages sorted by number of examples completed.

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

Top tier Second tier Third tier Fourth tier
Third ten programming languages by number of task examples completed:
    ㉑ C_sharp       ㉒ Nim           ㉓ Sidef         ㉔ Factor        ㉕ PicoLisp     
    ㉖ Lua           ㉗ Ada           ㉘ Mathematica   ㉙ Rust          ㉚ Common_Lisp  
As of 2021-02-14T22:58:38Z :: Tasks: 1087 :: Draft Tasks:234 :: Total Tasks: 1321 :: Total Examples: 73111
Count Task
480 Hello world/Text
318 99 bottles of beer  
313 100 doors
311 FizzBuzz
285 Factorial
285 Fibonacci sequence
272 Comments
264 A+B
258 Empty program
238 Function definition
229 Loops/Infinite
224 Loops/While
224 Reverse a string
223 Arrays
219 Ackermann function
206 Loops/For
200 Conditional structures  
197 Greatest common divisor
196 Arithmetic/Integer
195 Greatest element of a list
186 Repeat a string
185 Array concatenation
184 Even or odd
184 Integer comparison
183 Averages/Arithmetic mean
181 Increment a numerical string
177 Hello world/Graphical
172 Copy a string
168 Boolean values
168 Loops/Downward for
166 Sieve of Eratosthenes
165 Apply a callback to an array
165 String concatenation
164 Character codes
164 Loops/N plus one half
163 Loops/Do-while
163 Loops/For with a specified step
162 Array length
162 Hello world/Newline omission
162 Loops/Foreach
162 Sum and product of an array
160 Binary digits
160 String length
159 Loops/Break
158 Integer sequence
158 Palindrome detection
157 String case
157 Towers of Hanoi
155 Sum of a series
155 Tokenize a string
154 Generic swap
153 Dot product
153 Leap year
152 Empty string
152 Hailstone sequence
152 Logical operations
152 Rot-13
152 Sum of squares
148 Associative array/Creation
148 Filter
147 Quine
146 Sorting algorithms/Bubble sort
145 Execute a system command
145 Sort an integer array
143 Factors of an integer
142 Guess the number
142 Higher-order functions
142 Roman numerals/Encode
141 System time
140 Caesar cipher
140 Determine if a string is numeric
140 Loop over multiple arrays simultaneously
140 Remove duplicate elements
140 User input/Text
139 File input/output
138 Sorting algorithms/Quicksort
137 Primality by trial division
136 Day of the week
136 Hello world/Standard error
135 Bitwise operations
135 Command-line arguments
135 Luhn test of credit card numbers
133 Read entire file
132 Create a file
132 Loops/Continue
131 Stack
131 Substring
130 Generate lower case ASCII alphabet
130 Sleep
129 Literals/String  
129 Mutual recursion
128 Check that file exists
128 Happy numbers
128 Pascal's triangle
127 Date format
127 Flatten a list
126 Least common multiple
126 Zero to the zero power
125 ABC problem
124 Program termination
123 Balanced brackets
123 Binary search
123 Literals/Integer
121 Compound data type
121 Ethiopian multiplication
121 Include a file
121 Loops/Nested
120 Detect division by zero
120 Function composition
120 Knuth shuffle
120 Variables    
119 Associative array/Iteration
119 Formatted numeric output
118 Averages/Root mean square
118 Null object
118 Read a file line by line
117 Count occurrences of a substring
117 Mandelbrot set
117 N-queens problem
116 Anagrams
116 File size
116 Hash from two arrays
116 Roman numerals/Decode
116 Search a list
115 Classes  
115 Count in octal
115 Multiplication tables
115 Sorting algorithms/Insertion sort
114 Case-sensitivity of identifiers
114 Delete a file
114 Guess the number/With feedback
114 Real constants and functions
113 Identity matrix
113 Matrix multiplication
113 Matrix transposition
112 Babbage problem
112 Environment variables
112 Input loop
112 Pick random element
112 String matching
111 Align columns
111 Averages/Median
111 Find limit of recursion
111 Hostname
111 Random numbers
110 Letter frequency
110 Perfect numbers
110 Rename a file
109 Arithmetic/Complex
109 HTTP
109 Haversine formula
109 Pangram checker
109 Return multiple values
108 Accumulator factory
107 Conway's Game of Life  
107 Infinity
106 Catalan numbers
106 Permutations
106 Temperature conversion
105 Assertions
105 Horner's rule for polynomial evaluation
105 Program name
105 Variadic function  
104 Anonymous recursion
104 Arithmetic-geometric mean
104 Averages/Pythagorean means
104 Levenshtein distance
104 Run-length encoding
103 Evaluate binomial coefficients
103 Strip a set of characters from a string
103 Substring/Top and tail
102 Exceptions
102 Look-and-say sequence
102 Prime decomposition
102 Queue/Definition
102 Regular expressions
101 Nth root
101 String append
100 Combinations
100 Reverse words in a string
100 String interpolation (included)
100 Strip whitespace from a string/Top and tail
100 Trigonometric functions  
100 Zig-zag matrix  
99 Comma quibbling
99 Sierpinski triangle  
99 Sorting algorithms/Merge sort
98 Ordered words
98 Shell one-liner
98 Short-circuit evaluation
97 24 game
97 Bulls and cows
97 Interactive programming  
97 Sorting algorithms/Selection sort
97 Sum multiples of 3 and 5
96 Call a function
96 Middle three digits
96 Y combinator  
95 Arbitrary-precision integers (included)
95 Create a two-dimensional array at runtime
95 Power set
95 Range expansion
94 Collections
94 Enumerations
94 Range extraction  
94 String prepend
93 Inheritance/Single    
93 Sorting algorithms/Gnome sort
93 Vector products
92 Create an HTML table
92 Digital root
92 Evolutionary algorithm
92 Execute Brain****
92 Exponentiation operator
92 First-class functions
92 MD5
92 Time a function  
91 Averages/Mode
91 One-dimensional cellular automata
91 Sequence of non-squares
91 Sierpinski carpet
91 Sorting algorithms/Cocktail sort
91 Sum digits of an integer
91 The Twelve Days of Christmas
90 JSON
90 Walk a directory/Non-recursively
89 Averages/Simple moving average
89 Cumulative standard deviation
89 N'th
89 Random number generator (included)
89 Sort using a custom comparator
88 Dragon curve  
88 Forward difference  
88 Langton's ant  
88 Monty Hall problem  
87 Entropy
87 Josephus problem
87 Sorting algorithms/Bogosort
87 String comparison  
87 Symmetric difference
86 Hamming numbers
86 Harshad or Niven series
85 Abstract type  
85 CSV data manipulation
85 Five weekends
85 Gray code
85 Greatest subsequential sum
85 Number names
84 Abundant, deficient and perfect number classifications
84 CSV to HTML translation
84 Hello world/Newbie    
84 Map range
84 Price fraction
84 Queue/Usage
84 Tree traversal
84 Window creation
83 Compare a list of strings
83 Menu
83 Sort an array of composite structures
82 Closures/Value capture
82 File modification time
82 Last Friday of each month
82 Non-decimal radices/Convert
82 Simple windowed application
82 Sorting algorithms/Heapsort    
81 Monte Carlo methods
81 Number reversal game
81 Walk a directory/Recursively
80 Box the compass  
80 Catamorphism
80 Hofstadter Q sequence  
80 Introspection    
80 Literals/Floating point
80 SEDOLs    
79 Amicable pairs
79 Calculating the value of e
79 Count the coins
79 Long multiplication    
79 Singly-linked list/Traversal  
79 Terminal control/Clear the screen  
79 URL decoding
79 Web scraping  
78 Count in factors
78 Hello world/Line printer  
78 Read a specific line from a file
78 Roots of unity
78 Set
78 Show the epoch
78 Spiral matrix
78 Top rank per group
78 XML/Input
77 Address of a variable      
77 Bitmap  
77 CRC-32  
77 Call an object method  
77 Concurrent computing
77 Find common directory path    
77 Floyd's triangle
77 Knapsack problem/0-1
77 Multifactorial  
77 Order two numerical lists
77 Playing cards
77 Sockets  
77 Sorting algorithms/Shell sort    
77 Terminal control/Ringing the terminal bell
76 Date manipulation    
76 Keyboard input/Obtain a Y or N response    
76 Linear congruential generator
76 Pythagorean triples  
76 Word wrap
75 Almost prime
75 Dynamic variable names    
75 Jensen's Device  
75 Kaprekar numbers  
75 Lucas-Lehmer test  
75 Man or boy test  
75 Operator precedence    
75 Proper divisors
75 Sorting algorithms/Counting sort  
75 Strip comments from a string
75 URL encoding
74 Averages/Mean angle
74 Find the last Sunday of each month
74 Find the missing permutation
74 Here document
74 List comprehensions
74 Modular inverse  
74 Non-decimal radices/Output
74 Parsing/RPN calculator algorithm
73 Anagrams/Deranged anagrams
73 Fibonacci n-step number sequences
73 Hello world/Web server  
73 Munchausen numbers
73 SHA-1
73 Sorting algorithms/Comb sort  
73 Soundex    
73 Unicode variable names
72 Calendar
72 Exceptions/Catch an exception thrown in a nested call
72 Multiple distinct objects
72 Phrase reversals  
72 Pi
72 Read a configuration file    
72 Repeat  
72 SHA-256
72 Semordnilap
72 Singly-linked list/Element definition  
72 Split a character string based on change of character
71 AKS test for primes
71 Animation    
71 Empty directory
71 Equilibrium index    
71 Execute HQ9+
71 Gamma function  
71 Longest common subsequence
71 Special characters          
71 Sudoku  
71 Take notes on the command line
71 Write entire file
70 Bitmap/Bresenham's line algorithm
70 Convert seconds to compound duration
70 Enforced immutability  
70 Polymorphism    
70 Rock-paper-scissors    
69 Call a foreign-language function    
69 Draw a sphere
69 Euler's sum of powers conjecture
69 Flow-control structures      
69 Four bit adder  
69 Guess the number/With feedback (player)
69 IBAN
69 Population count
69 Quaternion type  
69 Show ASCII table      
69 Sort disjoint sublist
69 Stair-climbing puzzle  
69 Vigenère cipher
69 Write float arrays to a text file    
68 15 puzzle game      
68 Catalan numbers/Pascal's triangle
68 Combinations with repetitions    
68 Constrained random points on a circle
68 Horizontal sundial calculations      
68 Maze generation  
68 Numerical integration
68 Self-describing numbers  
68 Sorting algorithms/Stooge sort
68 Trabb Pardo–Knuth algorithm  
68 Zeckendorf number representation  
67 Closest-pair problem      
67 Currying  
67 Euler method
67 Extend your language
67 Fork
67 Fractal tree    
67 Jump anywhere    
67 Largest int from concatenated ints
67 Old lady swallowed a fly
67 Priority queue
67 Text processing/Max licenses in use
66 Arithmetic/Rational
66 Benford's law  
66 Chinese remainder theorem
66 Magic squares of odd order  
66 Named parameters  
66 Nested function
65 Amb  
65 One of n lines in a file
65 Optional parameters  
65 Runtime evaluation        
65 Sort stability
65 Special variables          
65 Unix/ls  
65 Variable size/Get  
64 Barnsley fern  
64 Continued fraction
64 Documentation  
64 Fast Fourier transform
64 General FizzBuzz
64 Hofstadter-Conway $10,000 sequence  
64 Inheritance/Multiple    
64 Morse code      
64 Remove lines from a file    
64 Sorting algorithms/Pancake sort  
64 XML/Output
63 Memory allocation    
63 Narcissistic decimal number    
63 Pernicious numbers  
63 Roots of a function    
63 Sequence of primes by trial division    
63 Singly-linked list/Element insertion  
63 Strip control codes and extended characters from a string  
62 Anti-primes  
62 Cholesky decomposition    
62 Factors of a Mersenne number  
62 HTTPS    
62 Non-decimal radices/Input
62 Probabilistic choice
62 Reduced row echelon form
62 Roots of a quadratic function    
62 Thue-Morse    
62 Undefined values  
62 Write language name in 3D ASCII  
61 Angle difference between two bearings    
61 Animate a pendulum
61 Circles of given radius through two points      
61 Exponentiation order  
61 Get system command output
61 Rep-string    
61 Semiprime
61 Sorting algorithms/Sleep sort
61 Van der Corput sequence    
60 Arithmetic evaluation  
60 Binary strings  
60 Department numbers  
60 Globally replace text in several files  
60 Knapsack problem/Continuous    
60 Modular exponentiation  
60 Plot coordinate pairs        
60 Runge-Kutta method      
59 24 game/Solve  
59 9 billion names of God the integer
59 Averages/Mean time of day    
59 Best shuffle  
59 Draw a clock    
59 Dutch national flag problem    
59 Host introspection    
59 Knapsack problem/Unbounded  
59 Mouse position      
59 Partial function application    
59 Test a function  
59 Tic-tac-toe        
59 Unicode strings    
59 User input/Graphical          
59 Word frequency  
58 Brownian tree
58 Emirp primes
58 Generator/Exponential  
58 Hash join    
58 Huffman coding
58 Jewels and stones      
58 Knight's tour  
58 Miller–Rabin primality test    
58 Odd word problem      
58 Truncatable primes
58 Yin and yang        
57 4-rings or 4-squares puzzle    
57 Add a variable to a class instance at runtime      
57 Bitmap/Write a PPM file  
57 Compile-time calculation
57 Deal cards for FreeCell  
57 Delegates  
57 Draw a cuboid    
57 I before E except after C    
57 JortSort
57 Left factorials  
57 Leonardo numbers
57 Matrix-exponentiation operator
57 Sort three variables    
57 Sorting algorithms/Bead sort      
57 Two sum      
56 2048    
56 Doubly-linked list/Element definition  
56 Extract file extension  
56 Fibonacci word  
56 Integer overflow    
56 LZW compression  
56 Random number generator (device)  
56 Rosetta Code/Rank languages by popularity        
56 Scope modifiers      
56 Singleton      
56 Stem-and-leaf plot    
56 Stern-Brocot sequence      
56 Terminal control/Coloured text    
55 Base64 encode data  
55 Cartesian product of two or more lists  
55 DNS query  
55 Define a primitive data type    
55 Dinesman's multiple-dwelling problem  
55 Discordian date      
55 Extreme floating point values    
55 Forest fire
55 Ludic numbers  
55 Mad Libs    
55 Multisplit    
55 Sorting algorithms/Permutation sort    
55 Stack traces    
55 Terminal control/Display an extended character    
54 100 prisoners    
54 CUSIP    
54 Damm algorithm    
54 Grayscale image  
54 Long year      
54 Longest common prefix        
54 Munching squares      
54 Runtime evaluation/In an environment        
54 Sierpinski triangle/Graphical        
54 Synchronous concurrency      
54 Topological sort      
54 Truncate a file    
54 XML/XPath    
53 Abundant odd numbers  
53 Convert decimal number to rational  
53 Draw a pixel        
53 Handle a signal        
53 Maximum triangle path sum
53 Modulinos      
53 Non-continuous subsequences      
53 Pointers and references      
53 Quickselect algorithm    
53 Send email      
53 Subleq        
53 Terminal control/Cursor positioning        
53 Ternary logic    
53 Unbias a random generator
53 XML/DOM serialization  
52 Bernoulli numbers
52 First-class functions/Use numbers analogously
52 Inverted syntax      
52 Iterated digits squaring
52 Keyboard input/Keypress check          
52 Longest increasing subsequence    
52 Statistics/Basic  
52 Text processing/2    
51 Gaussian elimination      
51 Loops/Increment loop index within loop body        
51 Wireworld  
50 Archimedean spiral    
50 Attractive numbers      
50 Base64 decode data  
50 Call a function in a shared library    
50 Chinese zodiac      
50 Colour bars/Display    
50 Determine if a string has all the same characters  
50 Dijkstra's algorithm  
50 Dining philosophers        
50 Farey sequence    
50 GUI component interaction        
50 Heronian triangles        
50 Longest common substring    
50 Respond to an unknown method call        
50 Seven-sided dice from five-sided dice    
50 Strip block comments    
50 Universal Turing machine  
50 Validate International Securities Identification Number      
49 FASTA format
49 Find the intersection of two lines    
49 Fractran        
49 Last letter-first letter  
49 Make directory path
49 Polynomial regression        
49 Smith numbers  
49 Text processing/1      
49 Tokenize a string with escaping    
48 Determine if a string is collapsible      
48 Doubly-linked list/Element insertion      
48 Doubly-linked list/Traversal          
48 Greyscale bars/Display          
48 Jaro distance          
48 Magic 8-ball          
48 Metaprogramming    
48 Move-to-front algorithm  
48 Polymorphic copy      
48 Rate counter          
48 Sattolo cycle        
48 Shoelace formula for polygonal area      
48 Vector        
47 Append a record to the end of a text file  
47 Chaos game      
47 Determinant and permanent      
47 Echo server    
47 Extensible prime generator    
47 Holidays related to Easter  
47 Kernighans large earthquake problem        
47 Longest string challenge      
47 Naming conventions      
47 Pascal matrix generation    
47 Pig the dice game        
47 Search a list of records  
47 Stable marriage problem          
47 Zebra puzzle          
46 Average loop length    
46 Bitmap/Flood fill      
46 Determine if only one instance is running      
46 Egyptian division  
46 History variables  
46 Kronecker product      
46 Perfect shuffle  
46 Polynomial long division      
46 Water collected between towers      
45 Active object    
45 Execute a Markov algorithm      
45 Hofstadter Figure-Figure sequences    
45 Image noise      
45 McNuggets problem    
45 OpenGL    
45 Parsing/Shunting-yard algorithm      
45 Password generator        
45 Send an unknown method call      
45 Set consolidation    
45 Square but not cube      
44 Carmichael 3 strong pseudoprimes    
44 Copy stdin to stdout      
44 Determine if a string has all unique characters  
44 Doubly-linked list/Definition        
44 Element-wise operations  
44 Elementary cellular automaton
44 GUI/Maximum window dimensions        
44 Generate Chess960 starting position      
44 Narcissist      
44 RPG attributes generator            
44 Rosetta Code/Count examples    
44 Sort numbers lexicographically  
44 Sparkline in unicode      
44 Ulam spiral (for primes)      
44 Verify distribution uniformity/Naive          
43 Associative array/Merging          
43 Atomic updates      
43 Bitmap/Read a PPM file      
43 Bulls and cows/Player    
43 ISBN13 check digit        
43 Keyboard input/Flush the keyboard buffer            
43 Knapsack problem/Bounded        
43 MD5/Implementation  
43 Sorting algorithms/Radix sort        
43 Visualize a tree  
42 Aliquot sequence classifications          
42 Cantor set        
42 Digital root/Multiplicative digital root    
42 Hickerson series of almost integers        
42 Nim game        
42 Percentage difference between images    
42 Subtractive generator      
42 Twelve statements          
42 Van Eck sequence      
42 Voronoi diagram          
41 Balanced ternary    
41 Bitmap/Midpoint circle algorithm      
41 Calendar - for "REAL" programmers        
41 Combinations and permutations          
41 Currency        
41 Deepcopy  
41 Fusc sequence      
41 Gapful numbers            
41 Hilbert curve      
41 Pascal's triangle/Puzzle      
41 Permutations/Derangements        
41 Speech synthesis            
41 Spinning rod animation/Text          
41 Start from a main routine          
41 Sum to 100      
41 Table creation/Postal addresses          
41 Terminal control/Dimensions        
41 Text between            
41 Variable size/Set            
40 Color of a screen pixel          
40 GUI enabling/disabling of controls          
40 Inverted index      
40 Problem of Apollonius          
40 S-expressions    
40 Secure temporary file        
40 Sorting algorithms/Strand sort          
40 Summarize and say sequence        
40 Truth table        
40 Variable-length quantity        
39 Abbreviations, automatic        
39 Brace expansion        
39 Casting out nines      
39 Colour pinstripe/Display      
39 Cramer's rule  
39 Fivenum      
39 Julia set        
39 Knuth's algorithm S        
39 Magic squares of doubly even order        
39 Parametric polymorphism        
39 Parsing/RPN to infix conversion      
39 Permutations by swapping        
39 Prime conspiracy      
39 Remove vowels from a string            
39 Sorting Algorithms/Circle Sort            
39 Taxicab numbers        
39 The Name Game            
39 Topswops        
39 UTF-8 encode and decode        
38 Break OO privacy      
38 Constrained genericity      
38 Euler's identity  
38 Flipping bits game              
38 LU decomposition        
38 Musical scale                  
38 Order disjoint list items        
38 Parallel calculations      
38 Permutation test      
38 Permutations with repetitions              
38 Primorial numbers        
38 Pythagorean quadruples        
38 Scope/Function names and labels              
37 Abbreviations, easy            
37 Bell numbers    
37 Chowla numbers          
37 Create a file on magnetic tape          
37 Cuban primes    
37 Feigenbaum constant calculation        
37 Find palindromic numbers in both binary and ternary bases    
37 Kahan summation              
37 Loops/Wrong ranges            
37 Lychrel numbers        
37 MAC Vendor Lookup  
37 MD4  
37 Metered concurrency          
37 Object serialization      
37 QR decomposition            
37 Ray-casting algorithm          
37 Read a file character by character/UTF8      
37 Sailors, coconuts and a monkey problem              
37 Sort a list of object identifiers    
37 Statistics/Normal distribution          
37 Vampire number        
36 21 game          
36 Abbreviations, simple            
36 Convex hull      
36 Days between dates      
36 Events        
36 Fibonacci word/fractal        
36 File extension is in extensions list          
36 Floyd-Warshall algorithm          
36 Function prototype          
36 Input/Output for lines of text                
36 Input/Output for pairs of numbers              
36 Metronome        
36 Numerical integration/Gauss-Legendre Quadrature          
36 Pathological floating point problems        
36 Ranking methods            
36 Solve the no connection puzzle              
36 Terminal control/Hiding the cursor          
36 Terminal control/Inverse video          
35 Approximate equality      
35 Arithmetic-geometric mean/Calculate Pi      
35 Bitmap/Bézier curves/Cubic          
35 Bitwise IO        
35 Brazilian numbers            
35 Find the intersection of a line with a plane        
35 Humble numbers        
35 Largest number divisible by its digits        
35 Long primes        
35 Maze solving          
35 Minesweeper game        
35 Multiline shebang          
35 Penney's game            
35 Pinstripe/Display          
35 Substitution cipher        
35 Sutherland-Hodgman polygon clipping        
35 Terminal control/Unicode output          
35 Test integerness        
34 Conjugate transpose      
34 Determine if a string is squeezable      
34 Display a linear combination          
34 Egyptian fractions        
34 Entropy/Narcissist        
34 Idiomatically determine all the lowercase and uppercase letters          
34 Loops/With multiple ranges            
34 Ordered partitions      
34 Pentagram              
34 RIPEMD-160    
34 Square-free integers          
34 Totient function    
33 Check output device is a terminal      
33 Continued fraction/Arithmetic/Construct from rational number      
33 Executable library      
33 Integer roots          
33 Multiple regression          
33 Parametrized SQL statement            
33 Parse command-line arguments            
33 Pattern matching            
33 RSA code        
33 Recaman's sequence              
33 Rosetta Code/Find bare lang tags                  
33 Subset sum problem          
33 Topic variable              
32 Bitcoin/address validation      
32 Bitmap/Bézier curves/Quadratic          
32 Cheryl's birthday        
32 Decimal floating point number to binary              
32 Eban numbers          
32 Execute SNUSP        
32 Factorions              
32 Galton box animation              
32 Isqrt (integer square root) of X              
32 Mertens function              
32 Mutex            
32 Negative base numbers          
32 Partition an integer x into n primes          
32 Primality by Wilson's theorem              
32 Pythagoras tree                
32 Safe primes and unsafe primes            
32 Sorting algorithms/Patience sort              
32 Straddling checkerboard              
32 Type detection          
32 URL parser          
31 Apply a digital filter (direct form II transposed)      
31 Bitmap/Histogram        
31 Church numerals              
31 Cycle detection              
31 Determine if two triangles overlap            
31 First class environments          
31 Keyboard macros              
31 Lah numbers          
31 Multi-dimensional array            
31 Multiplicative order          
31 Numeric error propagation        
31 Old Russian measure of length              
31 Resistor mesh            
31 Rosetta Code/Find unimplemented tasks        
31 Set puzzle            
31 Solve a Hidato puzzle              
31 Terminal control/Cursor movement            
31 Textonyms            
31 Write to Windows event log                
30 Check Machin-like formulas            
30 Check input device is a terminal            
30 Deconvolution/1D        
30 Dice game probabilities        
30 FTP          
30 Faulhaber's formula          
30 Faulhaber's triangle          
30 Four is magic        
30 Implicit type conversion              
30 Koch curve          
30 Mersenne primes            
30 Mian-Chowla sequence            
30 Palindrome dates          
30 Perfect totient numbers            
30 Poker hand analyser            
30 Reflection/List properties              
30 Simple database              
30 Use another language to call a function              
30 Xiaolin Wu's line algorithm                
30 Zhang-Suen thinning algorithm              
29 Arena storage pool        
29 Bioinformatics/base count              
29 Chaocipher        
29 Chat server          
29 Checkpoint synchronization              
29 Death Star            
29 Decision tables            
29 Diversity prediction theorem          
29 Draw a rotating cube          
29 Gauss-Jordan matrix inversion            
29 HTTPS/Authenticated        
29 Jacobi symbol            
29 Memory layout of a data structure              
29 Modular arithmetic          
29 Parallel brute force        
29 Pragmatic directives          
29 Set of real numbers            
29 Terminal control/Preserve screen          
29 Window creation/X11              
29 Word break problem            
28 AVL tree        
28 Bacon cipher                
28 Chemical calculator            
28 Compiler/lexical analyzer            
28 Find first and last set bit of a long integer              
28 Find largest left truncatable prime in a given base            
28 Formal power series        
28 Honeycombs          
28 Sequence: smallest number greater than previous term with exactly n divisors            
28 Sequence: smallest number with exactly n divisors              
28 State name puzzle                
28 Stream merge              
28 Strong and weak primes            
28 Sum and product puzzle          
28 Update a configuration file                  
28 Verify distribution uniformity/Chi-squared test              
27 Active Directory/Connect              
27 Burrows–Wheeler transform          
27 Chebyshev coefficients              
27 Go Fish              
27 Law of cosines - triples          
27 Palindromic gapful numbers            
27 Paraffins                
27 Peano curve            
27 Polyspiral                
27 Ramsey's theorem                
27 Rosetta Code/Fix code tags            
27 Safe addition          
27 Sexy primes            
27 Sorting algorithms/Cycle sort                
27 Superellipse              
27 Weird numbers            
27 World Cup group stage              
27 Yellowstone sequence            
26 Angles (geometric), normalization and conversion        
26 Birthday problem                  
26 Cut a rectangle              
26 Distributed programming        
26 Extra primes                
26 Fairshare between two and more          
26 First power of 2 that has leading decimal digits of 12              
26 Image convolution          
26 Kronecker product based fractals        
26 Machine code          
26 Natural sorting                
26 Nautical bell                  
26 Perlin noise            
26 Reflection/List methods            
26 Same fringe          
26 Smarandache prime-digital sequence            
26 Super-d numbers          
26 Table creation              
26 Thiele's interpolation formula          
26 Zumkeller numbers            
25 A* search algorithm          
25 Card shuffles              
25 Color wheel              
25 Create an object at a given address            
25 Elliptic curve arithmetic              
25 Fermat numbers            
25 First perfect square in base n with n unique digits              
25 Fraction reduction            
25 Generate random chess position            
25 Idiomatically determine all the characters that can be used for symbols                
25 Length of an arc between two angles                
25 Magic squares of singly even order              
25 Möbius function                
25 N-smooth numbers            
25 Nonoblock                
25 Numbers with prime digits whose sum is 13                  
25 RCRPG              
25 Sequence of primorial primes                
25 Solve a Holy Knight's tour              
25 Stirling numbers of the first kind                
25 Stirling numbers of the second kind                
25 The ISAAC Cipher            
25 Tonelli-Shanks algorithm            
25 Welch's t-test                  
24 Abelian sandpile model              
24 Audio alarm                  
24 Cipolla's algorithm            
24 Hough transform              
24 K-means++ clustering            
24 Mind boggling card trick            
24 Pell's equation              
24 Plasma effect              
24 Play recorded sounds              
24 Ramer-Douglas-Peucker line simplification            
24 Range consolidation              
24 Sierpinski pentagon            
24 Simulate input/Keyboard              
24 Successive prime differences              
24 Unprimeable numbers            
24 Yahoo! search interface              
23 Base58Check encoding              
23 Circular primes            
23 Create an object/Native demonstration                
23 Deming's Funnel            
23 Elementary cellular automaton/Random Number Generator              
23 Fixed length records            
23 Function frequency          
23 Hunt the Wumpus            
23 Intersecting number wheels              
23 List rooted trees              
23 Lucky and even lucky numbers                
23 Main step of GOST 28147-89              
23 Make a backup file                
23 Markov chain text generator          
23 Minimum positive multiple in base 10 using only 0 and 1                
23 Monads/Maybe monad                
23 Numbers with equal rises and falls                  
23 Percolation/Mean run density              
23 Permutations/Rank of a permutation                  
23 Record sound            
23 SOAP                  
23 Superpermutation minimisation                
23 Teacup rim text              
23 Total circles area                
23 Video display modes                    
22 Commatizing numbers              
22 Find duplicate files          
22 Find words with alternating vowels and consonants                  
22 Finite state machine                  
22 Increasing gaps between consecutive Niven numbers                
22 Kolakoski sequence            
22 Linux CPU utilization                  
22 Matrix chain multiplication          
22 Parse an IP Address                
22 Pierpont primes            
22 Reverse the gender of a string                  
22 Snake and Ladder              
22 Spelling of ordinal numbers            
21 Active Directory/Search for a user                  
21 Alternade words                
21 De Bruijn sequences              
21 Joystick position                
21 Kosaraju            
21 Magnanimous numbers              
21 Mastermind            
21 Mayan numerals              
21 Median filter            
21 Next highest int from digits              
21 Numeric separator syntax                
21 Orbital elements                
21 Pig the dice game/Player              
21 Playfair cipher                  
21 Reflection/Get source                
21 Solve a Hopido puzzle                  
21 Solve a Numbrix puzzle                  
21 Sorting algorithms/Cocktail sort with shifting bounds                
21 Window management              
20 Addition chains                
20 Assertions in design by contract                  
20 Data Encryption Standard                
20 Eertree                
20 Esthetic numbers            
20 Index finite lists of positive integers                
20 Levenshtein distance/Alignment            
20 Longest common suffix                  
20 Native shebang                  
20 Pseudo-random numbers/PCG32              
20 Random Latin squares                
20 Shortest common supersequence                
20 Sokoban                
20 Tau number                  
20 UPC                
20 Vigenère cipher/Cryptanalysis                
20 Vogel's approximation method                
20 Words containing "the" substring                
19 ASCII art diagram converter              
19 Bilinear interpolation                
19 Bioinformatics/Sequence mutation              
19 Code segment unload                    
19 Color quantization            
19 Elementary cellular automaton/Infinite length                
19 K-d tree              
19 Knuth's power tree                
19 Monads/List monad                  
19 Montgomery reduction            
19 N-body problem                  
19 Names to numbers              
19 Perceptron                  
19 Print debugging statement                    
19 Readline interface                
19 Simulate input/Mouse              
19 Sunflower fractal                  
19 Tau function                  
19 Untrusted environment                
19 Word wheel                
18 ABC words                  
18 Abelian sandpile model/Identity          
18 Arithmetic coding/As a generalized change of radix                
18 Bitcoin/public point to address            
18 Canonicalize CIDR            
18 Compiler/code generator                  
18 Draw pixel 2                
18 EKG sequence convergence              
18 Find URI in text                  
18 Find words which contains more than 3 e vowels                  
18 Imaginary base numbers              
18 Line circle intersection                  
18 Metallic ratios              
18 Monads/Writer monad                
18 Pancake numbers                    
18 Percolation/Site percolation                
18 Pseudo-random numbers/Xorshift star            
18 SQL-based authentication              
18 Selective file copy                  
18 Sierpinski arrowhead curve              
18 Solve triangle solitare puzzle                  
18 Sum data type                
18 Transportation problem                  
18 Twin primes                
18 Ulam numbers                
17 15 puzzle solver            
17 Cistercian numerals                
17 Compiler/syntax analyzer                  
17 Compiler/virtual machine interpreter                  
17 File size distribution            
17 Just in time processing on a character stream                  
17 Long literals, with continuations              
17 Matrix digital rain              
17 NYSIIS                    
17 Odd words                
17 P-value correction                  
17 Polynomial synthetic division                
17 Prime words                
17 Primes - allocate descendants to their ancestors                  
17 Product of divisors                  
17 Proof                    
17 Self numbers                    
17 Separate the house number from the street name                  
17 Sum of divisors                  
17 Zeckendorf arithmetic                
16 Aspect oriented programming                  
16 Bin given limits              
16 Biorhythms                
16 Bitmap/Read an image through a pipe            
16 Changeable words                    
16 Chernick's Carmichael numbers                
16 Find if a point is within a triangle                
16 Free polyominoes enumeration                
16 HTTPS/Client-authenticated              
16 Latin Squares in reduced form                
16 Most frequent k chars distance                  
16 Nested templated data                  
16 Nimber arithmetic                
16 Particle swarm optimization                  
16 Percolation/Bond percolation                    
16 Percolation/Mean cluster density                  
16 Pseudo-random numbers/Splitmix64              
16 Self-hosting compiler                
16 Tarjan              
16 Terminal control/Positional read                  
16 Vibrating rectangles                  
16 Word search                  
15 Bitmap/PPM conversion through a pipe              
15 Cyclotomic polynomial              
15 Functional coverage tree                
15 Geometric algebra                  
15 Getting the number of decimals                    
15 Merge and aggregate datasets                  
15 Nonogram solver                
15 Numerical integration/Adaptive Simpson's method                
15 Rare numbers                  
15 Rendezvous                
15 Retrieve and search chat history                  
15 Singly-linked list/Element removal                
15 Snake                  
15 Square root by hand                    
15 Suffix tree                
14 Calkin-Wilf sequence                
14 Compare sorting algorithms' performance                  
14 Compiler/AST interpreter                  
14 Four is the number of letters in the ...                
14 Generalised floating point addition                    
14 Gradient descent                    
14 Jaro-Winkler distance                  
14 Logistic curve fitting in epidemiology                    
14 Partition function P              
14 Peaceful chess queen armies                  
14 Permutations with some identical elements                
14 Ramanujan's constant                  
14 Topological sort/Extracted top item                    
14 Words from neighbour ones                  
14 XML validation                
13 Banker's algorithm                  
13 Deconvolution/2D+                
13 Exponentiation with infix operators in (or operating on) the base                
13 Factorial base numbers indexing permutations of a collection                
13 Pisano period                
13 Sequence: nth number with exactly n divisors                
13 Sine wave                    
12 Canny edge detector                
12 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
12 Greed                
12 Interactive help                
12 Longest palindromic substrings                    
12 OpenWebNet password                    
12 Print itself                    
12 Safe mode                  
12 Sierpinski curve              
12 Simulated annealing                
12 Sorting algorithms/Tree sort on a linked list                    
12 XXXX redacted                  
11 Almkvist-Giullera formula for pi                  
11 Audio frequency generator                    
11 Find words which first and last three letters are equals                  
11 Geohash                
11 Launch rocket with countdown and acceleration in stdout                  
11 Minimal steps down to 1                  
11 Pentomino tiling                  
11 Railway circuit                    
11 Run as a daemon or service                
11 SHA-256 Merkle tree                
11 Sierpinski square curve              
11 Tetris                  
11 Text completion                  
11 VList                    
10 Catmull–Clark subdivision surface                
10 Change e letters to i in words                  
10 Checksumcolor                
10 Colour pinstripe/Printer                
10 Combinations with repetitions/Square digit chain                    
10 Execute CopyPasta Language                    
10 External sort                    
10 Faces from a mesh                  
10 Minkowski question-mark function                  
10 One-time pad                    
10 Penrose tiling                  
10 Powerful numbers                  
10 Pseudo-random numbers/Combined recursive generator MRG32k3a                
10 Resistance calculator                  
10 Spoof game                    
10 Three word location                    
10 Time-based one-time password algorithm                
10 Tree from nesting levels                    
10 Unit testing                    
10 Using a speech engine to highlight words                  
9 Curve that touches three points                    
9 Display an outline as a nested table                  
9 Fibonacci matrix-exponentiation                
9 French Republican calendar                  
9 Graph colouring                  
9 Hourglass puzzle                    
9 IPC via named pipe                  
9 Morpion solitaire                    
9 Non-transitive dice                  
9 Parse EBNF                  
9 Pinstripe/Printer                  
9 Quoting constructs                    
9 Rosetta Code/Tasks without examples                    
9 Starting a web browser                    
9 Suffixation of decimal numbers                    
9 Text to HTML                    
9 Tree datastructures                    
9 Two bullet roulette                  
9 War card game                  
8 Count the coins/0-1                    
8 Multidimensional Newton-Raphson method                  
8 Numerical and alphabetical suffixes                  
8 Range modifications                    
8 Resistance network calculator                    
8 Rosetta Code/Rank languages by number of users                    
8 Sort an outline at every level                    
8 User defined pipe and redirection operators                    
7 16 puzzle game                    
7 Brace expansion using ranges                    
7 Compiler/Verifying syntax                    
7 Elliptic Curve Digital Signature Algorithm                    
7 Fibonacci heap                    
7 Mayan calendar                    
7 Pseudorandom number generator image                  
7 Robots                    
7 URL shortener                  
6 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)                    
6 Doubly-linked list/Element removal                    
6 I'm a software engineer, get me out of here                    
6 OpenGL pixel shader                    
6 OpenGL/Utah Teapot                    
6 Price list behind API                    
6 Recursive descent parser generator                    
6 Remote agent/Agent logic                  
6 Remote agent/Simulation                  
6 Rosetta Code/Run examples                    
6 Smallest enclosing circle problem                    
6 Untouchable numbers                    
5 Addition-chain exponentiation                    
5 Audio overlap loop                    
5 Bioinformatics/global alignment                    
5 Black Box                    
5 Boids                    
5 Chess player                  
5 Hexapawn                    
5 Process SMIL directives in XML data                    
5 Raster bars                  
5 Remote agent/Agent interface                  
5 Solve a Rubik's Cube                    
5 Strassen's algorithm                    
5 Terminal control/Restricted width positional input/No wrapping                  
5 Terminal control/Restricted width positional input/With wrapping                  
5 Waveform analysis/Doh ray me                    
4 Generalised floating point multiplication                    
4 OLE automation                    
4 P-Adic numbers, basic                    
4 Tamagotchi emulator                    
4 Unicode polynomial equation                    
4 Using the Meetup.com API                    
4 Weather routing                    
3 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                    
3 Random sentence from book                    
3 Rosetta Code/List authors of task descriptions                    
3 Solving coin problems                    
3 Ukkonen’s suffix tree construction                    
3 Vidir                    
3 Waveform analysis/Top and tail                    
3 WiktionaryDumps to words                    
2 15 puzzle game in 3D                    
2 CLI-based maze-game                    
2 IRC gateway                    
2 P-Adic square roots                    
1 Blackjack strategy                    
1 Filter words