Rosetta Code/Count examples/Full list/Tier 3

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Revision as of 20:28, 27 June 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 Mathematica   ㉒ Scala         ㉓ Factor        ㉔ C_sharp       ㉕ Sidef        
    ㉖ PicoLisp      ㉗ Rust          ㉘ Ada           ㉙ Lua           ㉚ FreeBASIC    
As of 2021-06-27T20:26:17Z :: Tasks: 1108 :: Draft Tasks:285 :: Total Tasks: 1393 :: Total Examples: 77649
Count Task
492 Hello world/Text
324 99 bottles of beer  
317 100 doors
317 FizzBuzz
295 Fibonacci sequence
288 Factorial
276 Comments
268 A+B
262 Empty program
239 Function definition
229 Loops/Infinite
226 Arrays
226 Reverse a string
225 Loops/While
222 Ackermann function
206 Loops/For
203 Conditional structures  
200 Greatest common divisor
198 Arithmetic/Integer
197 Greatest element of a list
189 Array concatenation
187 Even or odd
185 Integer comparison
185 Repeat a string
184 Averages/Arithmetic mean
183 Increment a numerical string
178 Hello world/Graphical
173 Copy a string
173 Sieve of Eratosthenes
170 Boolean values
168 Binary digits
168 Loops/Downward for
168 String concatenation
167 Character codes
166 Apply a callback to an array
166 Array length
166 Towers of Hanoi
164 Hello world/Newline omission
164 Loops/Do-while
164 Loops/N plus one half
164 Palindrome detection
164 Sum and product of an array
163 Loops/For with a specified step
163 Loops/Foreach
163 String length
162 Integer sequence
162 Sum of a series
161 String case
161 Tokenize a string
160 Loops/Break
158 Rot-13
156 Dot product
155 Generic swap
155 Leap year
155 Sum of squares
154 Empty string
154 Hailstone sequence
154 Logical operations
153 Filter
153 Quine
150 Associative array/Creation
150 Sort an integer array
150 Sorting algorithms/Bubble sort
147 Execute a system command
146 Roman numerals/Encode
145 Factors of an integer
144 Caesar cipher
144 Remove duplicate elements
144 System time
143 Guess the number
143 Loop over multiple arrays simultaneously
142 Determine if a string is numeric
142 Higher-order functions
141 Sorting algorithms/Quicksort
141 User input/Text
140 File input/output
139 Luhn test of credit card numbers
137 Bitwise operations
137 Day of the week
137 Primality by trial division
136 Hello world/Standard error
135 Command-line arguments
135 Read entire file
134 Create a file
134 Happy numbers
134 Mutual recursion
134 Stack
134 Substring
134 Zero to the zero power
133 Loops/Continue
132 Check that file exists
132 Sleep
131 Generate lower case ASCII alphabet
131 Pascal's triangle
130 Least common multiple
129 ABC problem
129 Literals/String  
128 Date format
128 Flatten a list
126 Balanced brackets
126 Variables      
125 Ethiopian multiplication
125 Program termination
124 Binary search
124 Compound data type
124 Include a file
124 Mandelbrot set
123 Formatted numeric output
123 Function composition
123 Literals/Integer
122 Detect division by zero
122 Roman numerals/Decode
121 Associative array/Iteration
121 Count occurrences of a substring
121 Loops/Nested
120 Averages/Root mean square
120 Count in octal
120 Knuth shuffle
120 N-queens problem
120 Null object
119 Read a file line by line
119 Sorting algorithms/Insertion sort
118 Haversine formula
117 Anagrams
117 Multiplication tables
117 Search a list
116 Guess the number/With feedback
116 Hash from two arrays  
116 Identity matrix
116 Matrix transposition
116 Pick random element
116 Real constants and functions
115 Babbage problem
115 Case-sensitivity of identifiers
115 Delete a file
115 File size
115 Letter frequency
115 Matrix multiplication
114 Averages/Median
114 Classes  
114 Find limit of recursion
114 Perfect numbers
114 Rename a file
114 String matching
113 Align columns
113 Environment variables
113 Input loop
112 Look-and-say sequence
112 Pangram checker
112 Random numbers
112 Return multiple values
111 HTTP  
111 Hostname
110 Arithmetic/Complex
110 Assertions
109 Catalan numbers
109 Conway's Game of Life  
108 Accumulator factory
108 Infinity
108 Temperature conversion
107 Sierpinski triangle
107 Strip a set of characters from a string
107 Substring/Top and tail
107 Variadic function  
106 Arithmetic-geometric mean
106 Averages/Pythagorean means
106 Evaluate binomial coefficients
106 Horner's rule for polynomial evaluation
106 Levenshtein distance
106 Permutations
106 Run-length encoding
105 Prime decomposition
105 Program name
105 String append
104 Anonymous recursion
104 Reverse words in a string
104 Strip whitespace from a string/Top and tail
104 Zig-zag matrix
103 Bulls and cows
103 Comma quibbling
103 Regular expressions  
103 String interpolation (included)
102 Combinations
102 Exceptions
102 Nth root
102 Queue/Definition
102 Sorting algorithms/Merge sort
102 Trigonometric functions
101 Ordered words
101 Sorting algorithms/Selection sort
101 The Twelve Days of Christmas
100 Harshad or Niven series
100 Middle three digits
99 Call a function  
99 N'th
99 Power set
99 Shell one-liner
99 Short-circuit evaluation
99 String prepend
99 Sum digits of an integer
98 24 game
98 Create a two-dimensional array at runtime
98 Sum multiples of 3 and 5
98 Vector products
97 Arbitrary-precision integers (included)
97 Range extraction  
97 Sierpinski carpet  
97 Y combinator    
96 Interactive programming  
96 Range expansion
95 Collections
95 Digital root
95 Enumerations
95 Sorting algorithms/Gnome sort
95 Walk a directory/Non-recursively  
94 Abundant, deficient and perfect number classifications
94 Execute Brain****
94 Sequence of non-squares
94 Time a function
93 Evolutionary algorithm
93 Exponentiation operator
93 First-class functions
93 Sorting algorithms/Cocktail sort
92 Averages/Mode
92 Create an HTML table
92 Inheritance/Single    
92 MD5
92 One-dimensional cellular automata
92 Random number generator (included)
91 Cumulative standard deviation
91 Dragon curve  
91 Hello world/Newbie      
91 Hofstadter Q sequence  
91 Number names
91 Sort using a custom comparator
90 Forward difference  
90 JSON  
90 Sorting algorithms/Bogosort
90 Symmetric difference  
89 Averages/Simple moving average
89 Hamming numbers
89 Josephus problem
89 Langton's ant  
89 Monty Hall problem  
89 String comparison  
88 Amicable pairs
88 Entropy
88 Gray code
88 Price fraction
87 Greatest subsequential sum
87 Number reversal game  
86 CSV data manipulation
86 Catamorphism
86 Five weekends
86 Map range
86 Menu  
86 Sorting algorithms/Heapsort    
86 Tree traversal  
85 Abstract type  
85 CSV to HTML translation
85 Calculating the value of e
85 Compare a list of strings
84 Almost prime
84 SEDOLs  
84 Walk a directory/Recursively  
84 Window creation
83 Floyd's triangle
83 Last Friday of each month
83 Monte Carlo methods
83 Non-decimal radices/Convert
83 Queue/Usage
83 Simple windowed application
83 Sort an array of composite structures
83 Terminal control/Clear the screen  
82 Closures/Value capture
82 Count in factors
82 File modification time
82 Introspection    
82 Set
82 URL decoding  
81 Box the compass
81 Order two numerical lists
81 Top rank per group  
81 Word wrap
80 CRC-32  
80 Find the last Sunday of each month
80 Hello world/Line printer  
80 Here document
80 Literals/Floating point
80 Long multiplication    
80 Roots of unity
80 Sorting algorithms/Shell sort  
80 Terminal control/Ringing the terminal bell
79 Bitmap    
79 Concurrent computing
79 Count the coins
79 Find common directory path  
79 Jensen's Device
79 Playing cards
79 Repeat
79 Show the epoch
79 Singly-linked list/Traversal  
79 Sorting algorithms/Counting sort  
79 Spiral matrix
79 Split a character string based on change of character
79 Web scraping  
79 XML/Input  
78 Address of a variable      
78 Date manipulation
78 Dynamic variable names      
78 Multifactorial
78 Operator precedence      
78 Pythagorean triples  
78 Read a specific line from a file
78 Sockets  
77 Find the missing permutation
77 Knapsack problem/0-1  
77 Linear congruential generator
77 Lucas-Lehmer test  
77 Munchausen numbers
77 Proper divisors
77 Strip comments from a string
77 URL encoding  
76 Averages/Mean angle
76 Call an object method  
76 Kaprekar numbers  
76 Keyboard input/Obtain a Y or N response    
76 Soundex    
75 Man or boy test    
75 Modular inverse  
75 Non-decimal radices/Output
75 Phrase reversals
75 Pi
75 Population count
75 Semordnilap
75 Show ASCII table    
75 Sorting algorithms/Comb sort  
75 Unicode variable names
74 Anagrams/Deranged anagrams
74 Calendar
74 Equilibrium index  
74 List comprehensions
74 Parsing/RPN calculator algorithm  
74 Read a configuration file    
74 SHA-1
74 Write entire file
73 Animation    
73 Execute HQ9+
73 Fibonacci n-step number sequences
73 Gamma function  
73 Hello world/Web server    
73 Multiple distinct objects
73 Sort disjoint sublist  
73 Special characters          
73 Sudoku  
72 Convert seconds to compound duration
72 Empty directory
72 Exceptions/Catch an exception thrown in a nested call
72 Flow-control structures      
72 Guess the number/With feedback (player)
72 Quaternion type
72 Rock-paper-scissors  
72 SHA-256
72 Singly-linked list/Element definition  
72 Take notes on the command line  
72 Vigenère cipher  
72 Zeckendorf number representation  
71 AKS test for primes
71 Currying
71 Enforced immutability
71 Euler's sum of powers conjecture
71 Fractal tree    
71 Longest common subsequence
71 Polymorphism      
71 Rep-string    
71 Stair-climbing puzzle  
70 Bitmap/Bresenham's line algorithm
70 Call a foreign-language function    
70 Closest-pair problem    
70 Combinations with repetitions  
70 Four bit adder    
70 Horizontal sundial calculations
70 IBAN
70 Largest int from concatenated ints
70 Numerical integration
70 Old lady swallowed a fly  
70 Sorting algorithms/Stooge sort
70 Trabb Pardo–Knuth algorithm  
70 Write float arrays to a text file    
69 15 puzzle game    
69 Catalan numbers/Pascal's triangle
69 Constrained random points on a circle
69 Draw a sphere
69 Magic squares of odd order  
69 Maze generation  
69 Self-describing numbers  
69 Sorting algorithms/Pancake sort    
68 Anti-primes
68 Barnsley fern  
68 Euler method
68 Extend your language
68 Fork
68 Jump anywhere    
68 Named parameters    
68 Priority queue
68 Text processing/Max licenses in use  
68 Thue-Morse
67 Amb  
67 Benford's law  
67 Chinese remainder theorem
67 Department numbers
67 Fast Fourier transform
67 Morse code  
67 Nested function
67 Pernicious numbers
67 Roots of a function  
67 Sequence of primes by trial division
67 Special variables          
67 Unix/ls    
67 Van der Corput sequence
66 Arithmetic/Rational  
66 Circles of given radius through two points    
66 One of n lines in a file
66 Remove lines from a file  
66 Runtime evaluation          
66 Sort stability  
66 Strip control codes and extended characters from a string  
66 Variable size/Get  
65 Continued fraction
65 Documentation  
65 General FizzBuzz
65 HTTPS    
65 Hofstadter-Conway $10,000 sequence
65 Inheritance/Multiple  
65 Narcissistic decimal number
65 Optional parameters    
65 Roots of a quadratic function  
64 Angle difference between two bearings  
64 Damm algorithm
64 Factors of a Mersenne number  
64 Jewels and stones  
64 Reduced row echelon form  
64 Tic-tac-toe    
64 Word frequency
64 XML/Output  
63 100 prisoners  
63 Animate a pendulum
63 Exponentiation order  
63 Get system command output
63 Memory allocation      
63 Non-decimal radices/Input
63 Probabilistic choice
63 Semiprime
63 Singly-linked list/Element insertion  
63 Sort three variables  
63 Stern-Brocot sequence  
63 Undefined values
63 Write language name in 3D ASCII  
63 Yin and yang    
62 Arithmetic evaluation  
62 Best shuffle  
62 Binary strings    
62 Cholesky decomposition    
62 Globally replace text in several files  
62 Modular exponentiation  
62 Mouse position    
62 Plot coordinate pairs      
62 Runge-Kutta method      
61 Averages/Mean time of day  
61 Draw a clock  
61 Generator/Exponential  
61 Sorting algorithms/Sleep sort
61 Truncatable primes
61 User input/Graphical          
60 24 game/Solve    
60 Bitmap/Write a PPM file    
60 Cartesian product of two or more lists
60 Emirp primes
60 Extract file extension
60 Huffman coding
60 Knapsack problem/Continuous      
60 Miller–Rabin primality test    
60 Partial function application    
60 Test a function    
60 Unicode strings      
60 Van Eck sequence    
59 9 billion names of God the integer
59 Brownian tree
59 CUSIP  
59 Dutch national flag problem  
59 Host introspection    
59 JortSort
59 Knapsack problem/Unbounded    
59 Knight's tour  
59 Left factorials  
59 Longest common prefix    
59 Sorting algorithms/Bead sort          
59 Subleq    
59 Two sum    
58 2048    
58 4-rings or 4-squares puzzle  
58 Abundant odd numbers
58 Add a variable to a class instance at runtime      
58 Compile-time calculation
58 Hash join      
58 I before E except after C    
58 Integer overflow  
58 Leonardo numbers
58 Ludic numbers
58 Odd word problem        
58 Random number generator (device)  
58 Stem-and-leaf plot  
57 Deal cards for FreeCell  
57 Delegates    
57 Doubly-linked list/Element definition  
57 Draw a cuboid  
57 LZW compression  
57 Mad Libs  
57 Magic 8-ball      
57 Matrix-exponentiation operator
57 Multisplit  
57 Scope modifiers        
57 Singleton      
57 Sorting algorithms/Permutation sort      
57 Square but not cube  
57 Terminal control/Coloured text  
57 Terminal control/Display an extended character      
57 Ternary logic    
57 Topological sort        
57 Truncate a file    
56 DNS query    
56 Dinesman's multiple-dwelling problem  
56 Discordian date    
56 Extreme floating point values  
56 Fibonacci word  
56 Forest fire
56 Gapful numbers          
56 Long year    
56 Quickselect algorithm  
56 Rosetta Code/Rank languages by popularity        
56 Sierpinski triangle/Graphical      
55 Base64 encode data    
55 Define a primitive data type    
55 Determine if a string has all the same characters
55 Grayscale image  
55 Modulinos      
55 Munching squares  
55 Pascal matrix generation    
55 Stack traces      
55 Unbias a random generator  
54 Attractive numbers  
54 Bernoulli numbers
54 Chinese zodiac  
54 Determine if a string is collapsible  
54 Draw a pixel      
54 FASTA format
54 Handle a signal        
54 Iterated digits squaring
54 Kernighans large earthquake problem  
54 Pointers and references      
54 Runtime evaluation/In an environment        
54 Synchronous concurrency        
54 Terminal control/Cursor positioning          
54 Universal Turing machine    
54 Wireworld    
54 XML/XPath      
53 Base64 decode data  
53 Convert decimal number to rational  
53 Dijkstra's algorithm    
53 Dining philosophers          
53 Heronian triangles  
53 ISBN13 check digit    
53 Keyboard input/Keypress check        
53 Longest common substring  
53 Loops/Increment loop index within loop body      
53 Maximum triangle path sum
53 Non-continuous subsequences      
53 Perfect shuffle  
53 Send email      
53 Statistics/Basic
53 Validate International Securities Identification Number  
53 Vector  
53 XML/DOM serialization    
52 Call a function in a shared library    
52 Copy stdin to stdout      
52 First-class functions/Use numbers analogously  
52 Inverted syntax      
52 Longest increasing subsequence      
52 Polynomial regression      
52 Rate counter        
52 Seven-sided dice from five-sided dice    
52 Smith numbers
52 Strip block comments    
52 Text processing/2    
52 Tokenize a string with escaping  
51 Farey sequence    
51 Gaussian elimination        
51 Holidays related to Easter  
51 Longest string challenge    
51 McNuggets problem    
51 Move-to-front algorithm  
51 Pig the dice game      
51 Respond to an unknown method call        
51 Sattolo cycle      
51 Shoelace formula for polygonal area    
50 Archimedean spiral    
50 Associative array/Merging        
50 Cantor set  
50 Colour bars/Display    
50 Find the intersection of two lines  
50 Fractran        
50 GUI component interaction        
50 Jaro similarity      
50 Make directory path  
50 Naming conventions    
50 Password generator    
50 RPG attributes generator        
50 Search a list of records  
50 Zebra puzzle        
49 Chaos game      
49 Determinant and permanent        
49 Doubly-linked list/Element insertion        
49 Doubly-linked list/Traversal          
49 Greyscale bars/Display        
49 Hofstadter Figure-Figure sequences    
49 Last letter-first letter    
49 Metaprogramming    
49 Sort numbers lexicographically  
49 Stable marriage problem        
49 Text processing/1        
48 Determine if a string has all unique characters  
48 Execute a Markov algorithm        
48 Extensible prime generator    
48 History variables    
48 Polymorphic copy        
48 Polynomial long division      
48 Visualize a tree    
48 Water collected between towers  
47 Append a record to the end of a text file  
47 Bitmap/Flood fill    
47 Echo server      
47 Egyptian division  
47 Kronecker product  
47 Narcissist    
47 OpenGL  
47 Ulam spiral (for primes)  
46 Active object    
46 Average loop length  
46 Determine if only one instance is running      
46 Element-wise operations      
46 Fusc sequence    
46 Problem of Apollonius        
46 Set consolidation      
46 Sorting algorithms/Radix sort      
46 Two identical strings              
46 Verify distribution uniformity/Naive          
45 Bulls and cows/Player      
45 Carmichael 3 strong pseudoprimes    
45 Doubly-linked list/Definition          
45 Generate Chess960 starting position    
45 Image noise      
45 Nim game        
45 Parsing/Shunting-yard algorithm          
45 Recaman's sequence        
45 Remove vowels from a string          
45 Rosetta Code/Count examples    
45 Send an unknown method call      
45 Sparkline in unicode        
45 Spinning rod animation/Text    
45 Taxicab numbers    
45 Text between      
44 Atomic updates        
44 Bitmap/Read a PPM file      
44 Currency  
44 Determine if a string is squeezable    
44 Elementary cellular automaton
44 Flipping bits game          
44 GUI/Maximum window dimensions      
44 Hickerson series of almost integers    
44 Secure temporary file    
44 Subtractive generator        
44 Sum to 100        
44 Truth table        
43 Deepcopy    
43 Digital root/Multiplicative digital root    
43 Fivenum  
43 Keyboard input/Flush the keyboard buffer          
43 Knapsack problem/Bounded            
43 MD5/Implementation  
43 Percentage difference between images      
43 S-expressions      
43 Sorting Algorithms/Circle Sort          
43 Table creation/Postal addresses            
43 The Name Game      
43 Twelve statements          
43 UTF-8 encode and decode      
43 Voronoi diagram        
42 Aliquot sequence classifications          
42 Balanced ternary    
42 Bitmap/Midpoint circle algorithm      
42 Calendar - for "REAL" programmers          
42 Days between dates  
42 Hilbert curve    
42 Inverted index        
42 Pascal's triangle/Puzzle      
42 Permutations by swapping      
42 Permutations/Derangements    
42 Sailors, coconuts and a monkey problem        
42 Sort a list of object identifiers    
42 Speech synthesis          
42 Start from a main routine        
42 Summarize and say sequence        
42 Terminal control/Dimensions          
41 Bell numbers    
41 Casting out nines      
41 Chowla numbers      
41 Color of a screen pixel          
41 Combinations and permutations            
41 Loops/With multiple ranges            
41 Musical scale              
41 Parallel calculations      
41 Permutation test    
41 Prime conspiracy  
41 Primorial numbers      
41 Ranking methods        
41 Sorting algorithms/Strand sort              
41 Topswops      
41 Totient function
41 Variable size/Set          
40 21 game      
40 Cramer's rule    
40 Euler's identity  
40 GUI enabling/disabling of controls        
40 Julia set      
40 Magic squares of doubly even order      
40 Parametric polymorphism          
40 Permutations with repetitions          
40 Rosetta Code/Find bare lang tags              
40 Scope/Function names and labels            
40 Statistics/Normal distribution      
40 Sum of divisors                
40 Tau number          
40 Variable-length quantity        
39 Abbreviations, automatic          
39 Abbreviations, easy            
39 Brace expansion          
39 Brazilian numbers      
39 Colour pinstripe/Display      
39 Create a file on magnetic tape        
39 Cycle detection        
39 Display a linear combination    
39 Events        
39 Feigenbaum constant calculation      
39 File extension is in extensions list        
39 Floyd-Warshall algorithm        
39 Kahan summation        
39 Knuth's algorithm S          
39 LU decomposition            
39 Long primes        
39 MAC Vendor Lookup    
39 Metered concurrency        
39 Multiple regression            
39 Order disjoint list items        
39 Parsing/RPN to infix conversion          
39 Penney's game        
39 Perfect totient numbers        
39 Ray-casting algorithm        
38 Bioinformatics/base count          
38 Break OO privacy      
38 Constrained genericity        
38 Convex hull    
38 Cuban primes    
38 Find the intersection of a line with a plane  
38 Function prototype            
38 Humble numbers        
38 Idiomatically determine all the lowercase and uppercase letters        
38 Input/Output for lines of text          
38 Input/Output for pairs of numbers        
38 Largest number divisible by its digits      
38 Loops/Wrong ranges            
38 Lychrel numbers        
38 Maze solving            
38 Mertens function            
38 Minesweeper game          
38 Palindrome dates      
38 Pathological floating point problems      
38 Primality by Wilson's theorem            
38 Pythagorean quadruples      
38 QR decomposition            
38 Read a file character by character/UTF8        
38 Substitution cipher    
38 Sutherland-Hodgman polygon clipping    
38 Terminal control/Hiding the cursor          
38 Terminal control/Inverse video            
38 Vampire number      
37 Approximate equality    
37 Fibonacci word/fractal      
37 Find palindromic numbers in both binary and ternary bases    
37 Isqrt (integer square root) of X          
37 MD4  
37 Metronome        
37 Object serialization          
37 Solve the no connection puzzle            
37 Test integerness        
37 Words containing "the" substring              
36 Abbreviations, simple            
36 Bitwise IO            
36 Check output device is a terminal      
36 Egyptian fractions      
36 Four is magic        
36 Numerical integration/Gauss-Legendre Quadrature            
36 Ordered partitions    
36 Pentagram            
36 Pinstripe/Display      
36 Pythagoras tree          
36 RIPEMD-160  
36 RSA code    
36 Safe primes and unsafe primes        
36 Square-free integers      
36 Tau function          
36 Terminal control/Unicode output            
35 Arithmetic-geometric mean/Calculate Pi        
35 Bitmap/Bézier curves/Cubic          
35 Determine if two triangles overlap        
35 Entropy/Narcissist      
35 Factorions          
35 Lah numbers        
35 Multiline shebang          
35 Parametrized SQL statement          
35 Subset sum problem        
35 Yellowstone sequence        
34 Cheryl's birthday      
34 Church numerals              
34 Conjugate transpose      
34 Galton box animation              
34 Integer roots        
34 Largest proper divisor of n                
34 Multi-dimensional array        
34 Mutex              
34 Numbers divisible by their individual digits, but not by the product of their digits.              
34 Old Russian measure of length        
34 Partition an integer x into n primes        
34 Pattern matching            
34 Poker hand analyser        
34 Sequence: smallest number with exactly n divisors          
34 Set puzzle          
34 Sum of the digits of n is substring of n                
34 Topic variable          
33 Bitcoin/address validation    
33 Check input device is a terminal            
33 Continued fraction/Arithmetic/Construct from rational number        
33 Coprimes                
33 Decimal floating point number to binary          
33 Executable library      
33 Multiplicative order          
33 Negative base numbers        
33 Parse command-line arguments          
33 Resistor mesh          
33 Solve a Hidato puzzle              
33 Sorting algorithms/Patience sort              
33 Straddling checkerboard            
33 Terminal control/Cursor movement          
33 Textonyms            
33 Type detection        
33 Zumkeller numbers        
32 Bitmap/Bézier curves/Quadratic          
32 Chaocipher        
32 Compiler/lexical analyzer          
32 Eban numbers        
32 Execute SNUSP          
32 Faulhaber's formula        
32 Faulhaber's triangle      
32 Implicit type conversion            
32 Mersenne primes          
32 Reflection/List properties            
32 Rosetta Code/Find unimplemented tasks      
32 Set of real numbers              
32 Sorting algorithms/Cycle sort            
32 Strong and weak primes        
32 URL parser          
32 Use another language to call a function            
32 Write to Windows event log            
32 Xiaolin Wu's line algorithm            
32 Zhang-Suen thinning algorithm            
31 Apply a digital filter (direct form II transposed)      
31 Arena storage pool      
31 Bacon cipher            
31 Bitmap/Histogram          
31 Chat server            
31 Check Machin-like formulas            
31 Checkpoint synchronization            
31 Cousin primes              
31 Dice game probabilities      
31 Diversity prediction theorem          
31 Draw a rotating cube        
31 Extra primes          
31 FTP            
31 First class environments            
31 First power of 2 that has leading decimal digits of 12          
31 Gauss-Jordan matrix inversion        
31 Jacobi symbol        
31 Keyboard macros              
31 Length of an arc between two angles            
31 Longest common suffix                
31 Mian-Chowla sequence            
31 Modular arithmetic        
31 Numeric error propagation        
31 Parallel brute force        
31 Pell's equation        
31 Primes which sum of digits is 25                
31 Product of divisors                
31 Sequence: smallest number greater than previous term with exactly n divisors          
31 Simple database              
31 Terminal control/Preserve screen            
31 Weird numbers        
31 Word break problem          
30 AVL tree        
30 Decision tables        
30 Deconvolution/1D          
30 HTTPS/Authenticated      
30 Koch curve          
30 Numbers with prime digits whose sum is 13              
30 Pragmatic directives          
30 Rosetta Code/Fix code tags        
30 Sexy primes        
30 Smarandache prime-digital sequence        
30 State name puzzle              
30 Stirling numbers of the second kind            
30 Stream merge            
30 Super-d numbers        
30 Update a configuration file                
30 Verify distribution uniformity/Chi-squared test          
30 Window creation/X11              
30 Word wheel            
29 ABC words              
29 Base-16 representation                  
29 Burrows–Wheeler transform      
29 Death Star              
29 Fairshare between two and more        
29 Find first and last set bit of a long integer            
29 Formal power series            
29 Fraction reduction            
29 Honeycombs          
29 Memory layout of a data structure            
29 Numbers which binary and ternary digit sum are prime                  
29 Peano curve        
29 Polyspiral              
29 Ramsey's theorem              
29 Stirling numbers of the first kind            
29 Strange numbers                
29 Successive prime differences          
29 Sum and product puzzle          
29 Sum of first n cubes              
29 Superellipse          
29 Table creation            
29 Thiele's interpolation formula          
29 Unprimeable numbers        
29 World Cup group stage              
28 Active Directory/Connect            
28 Chebyshev coefficients            
28 Chemical calculator              
28 Find largest left truncatable prime in a given base            
28 Find words with alternating vowels and consonants                
28 First perfect square in base n with n unique digits              
28 Frobenius numbers              
28 Law of cosines - triples          
28 Machine code            
28 Möbius function          
28 Natural sorting              
28 Nautical bell                  
28 Nice primes              
28 Nonoblock                
28 Numbers with equal rises and falls              
28 Perlin noise              
28 Plasma effect        
28 Range consolidation            
28 Reflection/List methods          
28 Same fringe          
28 Strange unique prime triplets              
28 The ISAAC Cipher          
28 Tonelli-Shanks algorithm            
27 Angles (geometric), normalization and conversion          
27 Birthday problem                  
27 Card shuffles            
27 Create an object at a given address          
27 Cut a rectangle                
27 Fermat numbers          
27 Find prime numbers of the form n*n*n+2            
27 Finite state machine                  
27 Go Fish              
27 Minimum positive multiple in base 10 using only 0 and 1            
27 Monads/Maybe monad              
27 N-smooth numbers          
27 Palindromic gapful numbers            
27 Paraffins              
27 Primes with digits in nondecreasing order                
27 Safe addition          
27 Sequence of primorial primes            
27 Shift list elements to left by 3            
27 Sierpinski pentagon          
27 Solve a Holy Knight's tour              
27 Strange plus numbers                
27 Superpermutation minimisation            
27 Teacup rim text            
26 A* search algorithm            
26 Abelian sandpile model              
26 Additive primes                
26 Alternade words              
26 Bin given limits        
26 Circular primes        
26 Color wheel              
26 Distributed programming          
26 Find words which contains more than 3 e vowels                
26 Fixed length records            
26 Function frequency            
26 Image convolution              
26 Kronecker product based fractals          
26 Magic squares of singly even order              
26 Mayan numerals                
26 Parse an IP Address              
26 Ramer-Douglas-Peucker line simplification              
26 Sorting algorithms/Cocktail sort with shifting bounds                  
25 Audio alarm                  
25 Base58Check encoding          
25 Cipolla's algorithm        
25 Elliptic curve arithmetic                
25 Generate random chess position          
25 Hough transform            
25 Hunt the Wumpus            
25 Idiomatically determine all the characters that can be used for symbols                
25 Increasing gaps between consecutive Niven numbers                
25 Intersecting number wheels                
25 K-means++ clustering              
25 Kolakoski sequence            
25 Linux CPU utilization                  
25 List rooted trees              
25 Long literals, with continuations                
25 Magnanimous numbers              
25 Next highest int from digits              
25 Pierpont primes          
25 Play recorded sounds              
25 RCRPG                  
25 Random Latin squares                
25 Simulate input/Keyboard              
25 Total circles area                  
25 Triplet of three numbers                  
25 Welch's t-test                
25 Yahoo! search interface              
24 Common sorted list                
24 De Bruijn sequences              
24 Elementary cellular automaton/Random Number Generator              
24 Make a backup file                
24 Markov chain text generator          
24 Mind boggling card trick              
24 Padovan sequence              
24 Partition function P          
24 Percolation/Mean run density              
24 Permutations/Rank of a permutation              
24 Playfair cipher                
24 Pseudo-random numbers/PCG32            
24 Reverse the gender of a string              
24 Shortest common supersequence                
24 Show the (decimal) value of a number of 1s appended with a 3, then squared              
24 Special Divisors                  
24 Summarize primes              
24 Video display modes                  
23 Active Directory/Search for a user                
23 Bioinformatics/Sequence mutation              
23 Create an object/Native demonstration                
23 Deming's Funnel              
23 Lucky and even lucky numbers                  
23 Main step of GOST 28147-89                
23 Matrix chain multiplication          
23 Monads/List monad                  
23 Pseudo-random numbers/Xorshift star            
23 Record sound              
23 SOAP                  
23 Snake and Ladder              
23 Solve a Hopido puzzle                  
23 Spelling of ordinal numbers              
22 15 puzzle solver            
22 ASCII art diagram converter                
22 Addition chains              
22 Assertions in design by contract              
22 Change e letters to i in words            
22 Commatizing numbers              
22 Data Encryption Standard            
22 Eertree                  
22 Esthetic numbers          
22 Exponentiation with infix operators in (or operating on) the base            
22 File size distribution            
22 Find duplicate files            
22 Kosaraju              
22 Levenshtein distance/Alignment            
22 Mastermind              
22 Merge and aggregate datasets                    
22 Nested templated data                  
22 Numbers in base 10 that are palindromic in bases 2, 4, and 16                  
22 Numbers with same digit set in base 10 and base 16                  
22 Numeric separator syntax              
22 Orbital elements              
22 Pig the dice game/Player                
22 Piprimes                
22 Self numbers                    
22 Sokoban                
22 Solve a Numbrix puzzle                  
22 UPC                
22 Vigenère cipher/Cryptanalysis                
22 Vogel's approximation method                
21 Bitcoin/public point to address              
21 Changeable words              
21 Cistercian numerals              
21 Doomsday rule                
21 Index finite lists of positive integers            
21 Joystick position                
21 K-d tree              
21 Median filter              
21 Montgomery reduction            
21 Native shebang                  
21 Odd words            
21 Pancake numbers                  
21 Polynomial synthetic division            
21 Reflection/Get source              
21 Smallest square that begins with n                
21 Sum data type            
21 Sunflower fractal              
21 Ulam numbers              
21 Window management                
20 Abelian sandpile model/Identity          
20 Arithmetic coding/As a generalized change of radix              
20 Bilinear interpolation              
20 Compiler/code generator                  
20 Elementary cellular automaton/Infinite length                
20 Find prime n for that reversed n is also prime              
20 Find words which first and last three letters are equals              
20 Knuth's power tree                
20 Latin Squares in reduced form                  
20 Line circle intersection                  
20 N-body problem                  
20 Names to numbers                
20 Order by pair comparisons                
20 P-value correction                
20 Print debugging statement                    
20 Rare numbers              
20 Readline interface                
20 Selective file copy                  
20 Sequence: nth number with exactly n divisors              
20 Sierpinski arrowhead curve            
20 Simulate input/Mouse              
20 Twin primes                
19 Calkin-Wilf sequence            
19 Code segment unload                  
19 Color quantization                
19 Common list elements                
19 Compiler/virtual machine interpreter                  
19 Draw pixel 2            
19 Find URI in text                  
19 Find words which contains all the vowels                
19 Just in time processing on a character stream                  
19 Metallic ratios                
19 Monads/Writer monad                  
19 Neighbour primes                
19 Nonogram solver                  
19 Odd squarefree semiprimes                
19 Perceptron                
19 Percolation/Site percolation                
19 Prime triplets                
19 Prime words              
19 Primes - allocate descendants to their ancestors                  
19 SQL-based authentication              
19 Sleeping Beauty problem                
19 Smallest power of 6 whose decimal expansion contains n                  
19 Transportation problem                  
19 Untrusted environment              
19 Word search                  
19 Zeckendorf arithmetic              
18 Biorhythms                
18 Canonicalize CIDR              
18 Coprime triplets                
18 EKG sequence convergence                
18 Erdős-primes              
18 Find if a point is within a triangle                
18 Free polyominoes enumeration              
18 Imaginary base numbers                
18 Most frequent k chars distance                  
18 NYSIIS                    
18 Next special primes                
18 Nimber arithmetic              
18 Percolation/Mean cluster density                
18 Pseudo-random numbers/Combined recursive generator MRG32k3a                
18 Self-hosting compiler              
18 Separate the house number from the street name                
18 Solve triangle solitare puzzle                  
18 Suffix tree                
17 Bitmap/Read an image through a pipe              
17 Chernick's Carmichael numbers                
17 Compiler/syntax analyzer                  
17 Cyclotomic polynomial              
17 Find first missing positive                  
17 Geometric algebra                  
17 HTTPS/Client-authenticated            
17 Matrix digital rain                  
17 Numbers in base-16 representation that cannot be written with decimal digits                  
17 Padovan n-step number sequences                
17 Palindromic primes                
17 Particle swarm optimization                  
17 Peaceful chess queen armies                  
17 Percolation/Bond percolation                    
17 Proof                    
17 Pseudo-random numbers/Splitmix64              
17 Ramanujan's constant                
17 Retrieve and search chat history                
17 Snake                
17 Tarjan              
17 Terminal control/Positional read                    
17 Vibrating rectangles                  
17 Words from neighbour ones                  
16 Aspect oriented programming                  
16 Bitmap/PPM conversion through a pipe                
16 Compiler/AST interpreter                  
16 Find words which contains most consonants                
16 Getting the number of decimals                    
16 Logistic curve fitting in epidemiology                  
16 Practical numbers                  
16 Print itself                  
16 Rendezvous                
16 Singly-linked list/Element removal                
16 Special factorials              
16 Square root by hand                  
16 Sylvester's sequence                  
16 Wieferich primes                
16 XML validation              
15 Banker's algorithm                  
15 Compare sorting algorithms' performance                    
15 Consecutive Primes With Ascending Or Descending Differences              
15 Cubic Special Primes                
15 Four is the number of letters in the ...                  
15 Functional coverage tree                  
15 Gradient descent                  
15 Numerical integration/Adaptive Simpson's method                
15 OpenWebNet password                    
15 Permutations with some identical elements                
15 Quadrat Special Primes                
15 Substring primes                
15 Unique characters in each string                
14 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
14 Deconvolution/2D+                  
14 Factorial base numbers indexing permutations of a collection                  
14 Generalised floating point addition                    
14 Jaro-Winkler distance                  
14 Pisano period                
14 SHA-256 Merkle tree                
14 Sierpinski curve            
14 Sine wave                  
14 Smallest numbers                
14 Topological sort/Extracted top item                    
14 Unique characters                  
14 XXXX redacted                  
13 Air mass                
13 Almkvist-Giullera formula for pi                
13 Checksumcolor                
13 Longest palindromic substrings                    
13 Modified random distribution            
13 Palindromic primes in base 16                  
13 Simulated annealing                  
13 Sorting algorithms/Tree sort on a linked list                    
13 Untouchable numbers                  
13 VList                  
13 Word ladder                  
12 Audio frequency generator                    
12 Canny edge detector                  
12 Catmull–Clark subdivision surface                  
12 Execute CopyPasta Language                    
12 French Republican calendar                
12 Geohash                
12 Greed                
12 Harmonic series                  
12 Interactive help                
12 Launch rocket with countdown and acceleration in stdout                
12 Minimal steps down to 1                  
12 Minkowski question-mark function              
12 Non-transitive dice                  
12 Railway circuit                    
12 Run as a daemon or service                
12 Safe mode                
12 Suffixation of decimal numbers                    
12 Tetris                  
12 Tree from nesting levels                    
12 Two bullet roulette                  
11 Bioinformatics/Subsequence                
11 Combinations with repetitions/Square digit chain                    
11 Cyclops numbers                  
11 Display an outline as a nested table                  
11 Graph colouring                  
11 One-time pad                    
11 Penrose tiling                
11 Pentomino tiling                  
11 Powerful numbers                  
11 Resistance calculator                    
11 Sierpinski square curve              
11 Spoof game                    
11 Text completion                  
11 Three word location                    
11 Time-based one-time password algorithm                
11 Tree datastructures                    
11 Unit testing                  
11 Using a speech engine to highlight words                  
10 Colour pinstripe/Printer                  
10 Curve that touches three points                    
10 Distribution of 0 Digits in Factorial Series                    
10 External sort                    
10 Faces from a mesh                    
10 Fibonacci matrix-exponentiation                
10 Hourglass puzzle                    
10 Longest substrings without repeating characters                    
10 Numerical and alphabetical suffixes                  
10 Pinstripe/Printer                  
10 Pseudorandom number generator image                  
10 Quoting constructs                    
10 Range modifications                    
10 Rosetta Code/Rank languages by number of users                    
10 Square Form Factorization                  
10 Starting a web browser                  
10 Text to HTML                    
9 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)                    
9 Count the coins/0-1                    
9 Elliptic Curve Digital Signature Algorithm                  
9 Fibonacci heap                    
9 Home primes                  
9 IPC via named pipe                  
9 Morpion solitaire                    
9 Parse EBNF                  
9 Resistance network calculator                    
9 Rosetta Code/Tasks without examples                    
9 Sort an outline at every level                    
9 User defined pipe and redirection operators                    
9 War card game                    
8 16 puzzle game                    
8 Bioinformatics/global alignment                    
8 Brace expansion using ranges                    
8 Compiler/Verifying syntax                    
8 Distinct Palindromes Within Decimal Numbers                  
8 Doubly-linked list/Element removal                  
8 Multidimensional Newton-Raphson method                  
8 OpenGL/Utah Teapot                    
8 Robots                    
7 Addition-chain exponentiation                    
7 Discrete Fourier transform                    
7 I'm a software engineer, get me out of here                    
7 Mayan calendar                    
7 P-Adic numbers, basic                  
7 Price list behind API                    
7 Random sentence from book                    
7 Recursive descent parser generator                    
7 Smallest enclosing circle problem                    
7 Tamagotchi emulator                    
7 URL shortener                  
6 Audio overlap loop                    
6 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                    
6 OpenGL pixel shader                    
6 Remote agent/Agent logic                  
6 Remote agent/Simulation                  
6 Rosetta Code/Run examples                    
6 Strassen's algorithm                    
6 Terminal control/Restricted width positional input/No wrapping                    
6 Terminal control/Restricted width positional input/With wrapping                    
6 Waveform analysis/Doh ray me                    
5 Black Box                    
5 Boids                    
5 Chess player                  
5 Compiler/Simple file inclusion pre processor                    
5 Generalised floating point multiplication                    
5 Hexapawn                    
5 OLE automation                    
5 P-Adic square roots                  
5 Process SMIL directives in XML data                    
5 Raster bars                  
5 Remote agent/Agent interface                  
5 Solve a Rubik's Cube                    
5 Unicode polynomial equation                    
5 WiktionaryDumps to words                    
4 Solving coin problems                    
4 Using the Meetup.com API                    
4 Weather routing                    
3 Blackjack strategy                    
3 Rosetta Code/List authors of task descriptions                    
3 Ukkonen’s suffix tree construction                    
3 Vidir                    
3 Waveform analysis/Top and tail                    
2 15 puzzle game in 3D                    
2 CLI-based maze-game                    
2 IRC gateway                    
0 Mine a bitcoin