Rosetta Code/Count examples/Full list/Tier 3

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Revision as of 23:06, 7 March 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 Scala         ㉒ C_sharp       ㉓ Sidef         ㉔ Factor        ㉕ PicoLisp     
    ㉖ Lua           ㉗ Ada           ㉘ Mathematica   ㉙ Rust          ㉚ Common_Lisp  
As of 2021-03-07T22:58:48Z :: Tasks: 1095 :: Draft Tasks:234 :: Total Tasks: 1329 :: Total Examples: 73775
Count Task
482 Hello world/Text
320 99 bottles of beer  
315 100 doors
312 FizzBuzz
285 Factorial
285 Fibonacci sequence
274 Comments
265 A+B
259 Empty program
238 Function definition
229 Loops/Infinite
225 Loops/While
223 Arrays
223 Reverse a string
220 Ackermann function
206 Loops/For
200 Conditional structures  
197 Greatest common divisor
197 Greatest element of a list
196 Arithmetic/Integer
187 Array concatenation
186 Repeat a string
185 Integer comparison
184 Even or odd
183 Averages/Arithmetic mean
181 Increment a numerical string
176 Hello world/Graphical
173 Copy a string
169 Boolean values
168 Loops/Downward for
167 Sieve of Eratosthenes
166 String concatenation
165 Apply a callback to an array
165 Character codes
164 Loops/Do-while
164 Loops/N plus one half
163 Hello world/Newline omission
163 Loops/For with a specified step
162 Array length
162 Loops/Foreach
162 Sum and product of an array
161 String length
160 Binary digits
160 Palindrome detection
159 Integer sequence
159 Loops/Break
159 Towers of Hanoi
157 String case
157 Sum of a series
155 Leap year
155 Tokenize a string
154 Dot product
154 Empty string
154 Generic swap
154 Rot-13
153 Logical operations
153 Sum of squares
152 Hailstone sequence
150 Filter
149 Associative array/Creation
148 Quine
146 Sorting algorithms/Bubble sort
145 Execute a system command
145 Sort an integer array
144 Factors of an integer
143 Roman numerals/Encode
142 Caesar cipher
142 Guess the number
142 Higher-order functions
142 System time
141 Remove duplicate elements
140 Determine if a string is numeric
140 Loop over multiple arrays simultaneously
140 User input/Text
139 File input/output
139 Sorting algorithms/Quicksort
137 Bitwise operations
136 Day of the week
136 Hello world/Standard error
136 Primality by trial division
135 Command-line arguments
135 Luhn test of credit card numbers
135 Read entire file
133 Create a file
133 Stack
132 Loops/Continue
132 Mutual recursion
131 Substring
130 Generate lower case ASCII alphabet
130 Sleep
129 Literals/String  
129 Pascal's triangle
128 Check that file exists
128 Flatten a list
128 Happy numbers
128 Least common multiple
128 Zero to the zero power
127 ABC problem
126 Date format
124 Binary search
124 Compound data type
124 Program termination
123 Balanced brackets
123 Literals/Integer
122 Detect division by zero
122 Function composition
122 Include a file
122 Variables    
121 Ethiopian multiplication
121 Loops/Nested
120 Formatted numeric output
120 Knuth shuffle
119 Associative array/Iteration
119 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
117 Roman numerals/Decode
117 Search a list
116 Anagrams
116 Count in octal
116 Hash from two arrays
116 Multiplication tables
116 Real constants and functions
115 Case-sensitivity of identifiers
115 File size
115 Guess the number/With feedback
115 Sorting algorithms/Insertion sort
114 Classes  
114 Delete a file
113 Babbage problem
113 Environment variables
113 Identity matrix
113 Input loop
113 Matrix multiplication
113 Matrix transposition
112 Align columns
112 Averages/Median
112 Find limit of recursion
112 Pick random element
112 String matching
111 Hostname
111 Letter frequency
111 Random numbers
111 Rename a file
111 Return multiple values
110 HTTP
110 Pangram checker
110 Perfect numbers
109 Arithmetic/Complex
109 Haversine formula
108 Accumulator factory
108 Assertions
107 Conway's Game of Life  
107 Infinity
107 Temperature conversion
106 Catalan numbers
106 Permutations
105 Averages/Pythagorean means
105 Horner's rule for polynomial evaluation
105 Levenshtein distance
105 Program name
105 Run-length encoding
105 Substring/Top and tail
105 Variadic function  
104 Anonymous recursion
104 Arithmetic-geometric mean
104 Strip a set of characters from a string
103 Evaluate binomial coefficients
103 Prime decomposition
103 Regular expressions
103 Reverse words in a string
103 String append
102 Exceptions
102 Look-and-say sequence
102 Nth root
102 Strip whitespace from a string/Top and tail
101 Queue/Definition
101 Sierpinski triangle  
101 String interpolation (included)
101 Trigonometric functions
100 Combinations
100 Ordered words
100 Zig-zag matrix  
99 Bulls and cows
99 Comma quibbling
99 Sorting algorithms/Merge sort
98 Shell one-liner
98 Short-circuit evaluation
97 24 game
97 Call a function
97 Create a two-dimensional array at runtime
97 Middle three digits
97 Sorting algorithms/Selection sort
97 Sum multiples of 3 and 5
96 Arbitrary-precision integers (included)
96 Interactive programming  
96 Power set
96 Range expansion
96 Range extraction  
96 String prepend
96 Y combinator  
94 Collections
94 Enumerations
94 Sum digits of an integer
93 First-class functions
93 Sorting algorithms/Gnome sort
93 Time a function
93 Vector products
92 Averages/Mode
92 Digital root
92 Evolutionary algorithm
92 Execute Brain****
92 Exponentiation operator
92 Inheritance/Single    
92 MD5
92 Sequence of non-squares
92 The Twelve Days of Christmas
92 Walk a directory/Non-recursively
91 Create an HTML table
91 N'th
91 One-dimensional cellular automata
91 Sierpinski carpet
91 Sorting algorithms/Cocktail sort
90 Cumulative standard deviation
90 JSON
90 Random number generator (included)
89 Averages/Simple moving average
89 Sort using a custom comparator
88 Dragon curve  
88 Forward difference  
88 Hello world/Newbie    
88 Langton's ant  
88 Monty Hall problem  
88 String comparison  
88 Symmetric difference
87 Entropy
87 Gray code
87 Josephus problem
87 Sorting algorithms/Bogosort
86 CSV data manipulation
86 Five weekends
86 Hamming numbers
86 Harshad or Niven series
86 Menu
85 Abstract type  
85 Abundant, deficient and perfect number classifications
85 Greatest subsequential sum
85 Number names
85 Tree traversal
84 CSV to HTML translation
84 Compare a list of strings
84 Map range
84 Price fraction
83 Queue/Usage
83 Window creation
82 Catamorphism
82 Closures/Value capture
82 File modification time
82 Hofstadter Q sequence  
82 Last Friday of each month
82 Non-decimal radices/Convert
82 SEDOLs  
82 Simple windowed application
82 Sort an array of composite structures
82 Sorting algorithms/Heapsort    
82 Walk a directory/Recursively
81 Monte Carlo methods
81 Number reversal game
81 Set
81 Terminal control/Clear the screen  
80 Amicable pairs
80 Box the compass  
80 Calculating the value of e
80 Count in factors
80 Introspection    
80 Literals/Floating point
80 URL decoding
79 Count the coins
79 Hello world/Line printer  
79 Long multiplication    
79 Roots of unity
79 Singly-linked list/Traversal  
79 Terminal control/Ringing the terminal bell
79 Web scraping
78 Bitmap  
78 Concurrent computing
78 Find common directory path    
78 Playing cards
78 Read a specific line from a file
78 Show the epoch
78 Spiral matrix
78 Top rank per group
78 XML/Input
77 Address of a variable      
77 CRC-32  
77 Date manipulation  
77 Find the last Sunday of each month
77 Floyd's triangle
77 Knapsack problem/0-1
77 Linear congruential generator
77 Multifactorial  
77 Operator precedence    
77 Order two numerical lists
77 Proper divisors
77 Sockets  
77 Sorting algorithms/Shell sort    
77 Word wrap
76 Call an object method  
76 Jensen's Device  
76 Keyboard input/Obtain a Y or N response    
76 Pythagorean triples  
76 Strip comments from a string
76 URL encoding
75 Almost prime
75 Dynamic variable names      
75 Find the missing permutation
75 Here document
75 Kaprekar numbers  
75 Lucas-Lehmer test  
75 Man or boy test  
75 Munchausen numbers
75 Repeat
75 Sorting algorithms/Counting sort  
74 Anagrams/Deranged anagrams
74 Averages/Mean angle
74 List comprehensions
74 Modular inverse  
74 Non-decimal radices/Output
74 Parsing/RPN calculator algorithm
74 SHA-1
74 Semordnilap
73 Fibonacci n-step number sequences
73 Hello world/Web server  
73 Read a configuration file    
73 Sorting algorithms/Comb sort  
73 Soundex  
73 Split a character string based on change of character
73 Unicode variable names
72 Animation    
72 Calendar
72 Empty directory
72 Exceptions/Catch an exception thrown in a nested call
72 Execute HQ9+
72 Gamma function  
72 Multiple distinct objects
72 Phrase reversals
72 Pi
72 Population count
72 SHA-256
72 Singly-linked list/Element definition  
72 Sudoku  
72 Write entire file
71 AKS test for primes
71 Convert seconds to compound duration
71 Equilibrium index    
71 Longest common subsequence
71 Special characters          
71 Take notes on the command line
70 Bitmap/Bresenham's line algorithm
70 Currying  
70 Enforced immutability  
70 Polymorphism    
70 Rock-paper-scissors  
70 Show ASCII table      
70 Vigenère cipher
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 Quaternion type
69 Self-describing numbers  
69 Sort disjoint sublist
69 Stair-climbing puzzle  
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 Extend your language
68 Horizontal sundial calculations      
68 Largest int from concatenated ints
68 Maze generation  
68 Numerical integration
68 Old lady swallowed a fly
68 Priority queue
68 Sorting algorithms/Stooge sort
68 Trabb Pardo–Knuth algorithm  
68 Zeckendorf number representation  
67 Closest-pair problem      
67 Euler method
67 Fork
67 Fractal tree    
67 Jump anywhere    
67 Nested function
67 Text processing/Max licenses in use
66 Arithmetic/Rational
66 Benford's law  
66 Chinese remainder theorem
66 Fast Fourier transform
66 Magic squares of odd order  
66 Named parameters  
66 Runtime evaluation        
66 Special variables        
65 Amb  
65 Documentation  
65 General FizzBuzz
65 Morse code    
65 Narcissistic decimal number
65 One of n lines in a file
65 Optional parameters  
65 Remove lines from a file  
65 Sort stability
65 Strip control codes and extended characters from a string  
65 Unix/ls  
65 Variable size/Get  
64 Barnsley fern  
64 Continued fraction
64 HTTPS    
64 Hofstadter-Conway $10,000 sequence  
64 Inheritance/Multiple  
64 Pernicious numbers  
64 Roots of a function    
64 Sequence of primes by trial division    
64 Sorting algorithms/Pancake sort    
64 XML/Output
63 Anti-primes  
63 Memory allocation    
63 Reduced row echelon form  
63 Roots of a quadratic function  
63 Singly-linked list/Element insertion  
62 Animate a pendulum
62 Cholesky decomposition    
62 Circles of given radius through two points      
62 Exponentiation order  
62 Factors of a Mersenne number  
62 Mouse position    
62 Non-decimal radices/Input
62 Probabilistic choice
62 Rep-string    
62 Runge-Kutta method      
62 Semiprime
62 Thue-Morse  
62 Undefined values
62 Write language name in 3D ASCII  
61 Angle difference between two bearings    
61 Get system command output
61 Globally replace text in several files  
61 Sorting algorithms/Sleep sort
61 Van der Corput sequence  
60 Arithmetic evaluation  
60 Averages/Mean time of day    
60 Best shuffle  
60 Binary strings    
60 Department numbers  
60 Knapsack problem/Continuous    
60 Modular exponentiation  
60 Plot coordinate pairs      
59 24 game/Solve  
59 9 billion names of God the integer
59 Draw a clock    
59 Dutch national flag problem    
59 Generator/Exponential  
59 Host introspection    
59 Huffman coding
59 Jewels and stones      
59 Knapsack problem/Unbounded  
59 Partial function application  
59 Test a function  
59 Tic-tac-toe      
59 Unicode strings    
59 Word frequency  
58 Bitmap/Write a PPM file  
58 Brownian tree
58 Compile-time calculation
58 Damm algorithm    
58 Emirp primes
58 Hash join    
58 Knight's tour  
58 Miller–Rabin primality test    
58 Odd word problem      
58 Sort three variables    
58 Truncatable primes
58 User input/Graphical        
58 Yin and yang      
57 4-rings or 4-squares puzzle    
57 Add a variable to a class instance at runtime    
57 Deal cards for FreeCell  
57 Delegates  
57 Draw a cuboid    
57 I before E except after C    
57 Integer overflow    
57 JortSort
57 Left factorials  
57 Leonardo numbers
57 Matrix-exponentiation operator
57 Random number generator (device)  
57 Scope modifiers      
57 Sorting algorithms/Bead sort        
57 Two sum      
56 2048    
56 Cartesian product of two or more lists  
56 DNS query  
56 Dinesman's multiple-dwelling problem  
56 Discordian date      
56 Doubly-linked list/Element definition    
56 Extract file extension
56 Fibonacci word  
56 LZW compression  
56 Longest common prefix      
56 Rosetta Code/Rank languages by popularity        
56 Singleton      
56 Stem-and-leaf plot    
56 Stern-Brocot sequence    
56 Terminal control/Coloured text    
56 Terminal control/Display an extended character    
56 Truncate a file    
55 100 prisoners    
55 Base64 encode data  
55 Define a primitive data type    
55 Extreme floating point values    
55 Forest fire
55 Ludic numbers  
55 Mad Libs    
55 Modulinos    
55 Multisplit    
55 Munching squares    
55 Sorting algorithms/Permutation sort      
55 Stack traces    
55 Topological sort      
54 CUSIP    
54 Draw a pixel        
54 Grayscale image  
54 Long year      
54 Quickselect algorithm    
54 Runtime evaluation/In an environment      
54 Sierpinski triangle/Graphical        
54 Subleq      
54 Synchronous concurrency      
54 Terminal control/Cursor positioning        
54 XML/XPath    
53 Abundant odd numbers  
53 Convert decimal number to rational  
53 Handle a signal        
53 Maximum triangle path sum
53 Non-continuous subsequences      
53 Pointers and references      
53 Send email      
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 Determine if a string has all the same characters  
51 Gaussian elimination        
51 Longest common substring    
51 Loops/Increment loop index within loop body        
51 Magic 8-ball          
51 Move-to-front algorithm
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 Dijkstra's algorithm  
50 Dining philosophers          
50 FASTA format
50 Farey sequence    
50 GUI component interaction        
50 Heronian triangles        
50 Polynomial regression      
50 Respond to an unknown method call      
50 Sattolo cycle        
50 Seven-sided dice from five-sided dice  
50 Strip block comments    
50 Universal Turing machine  
50 Validate International Securities Identification Number    
50 Vector      
49 Determine if a string is collapsible      
49 Find the intersection of two lines    
49 Fractran        
49 Last letter-first letter  
49 Make directory path
49 Pig the dice game      
49 Rate counter        
49 Smith numbers  
49 Text processing/1      
48 Doubly-linked list/Element insertion        
48 Doubly-linked list/Traversal          
48 Greyscale bars/Display          
48 Holidays related to Easter  
48 Jaro distance          
48 Kernighans large earthquake problem      
48 Metaprogramming    
48 Naming conventions    
48 Perfect shuffle
48 Polymorphic copy      
48 Search a list of records
48 Shoelace formula for polygonal area      
48 Tokenize a string with escaping    
48 Zebra puzzle        
47 Append a record to the end of a text file  
47 Chaos game      
47 Copy stdin to stdout      
47 Determinant and permanent      
47 Echo server    
47 Extensible prime generator      
47 History variables  
47 Kronecker product    
47 Longest string challenge      
47 Pascal matrix generation  
47 Square but not cube      
47 Stable marriage problem          
46 Average loop length    
46 Bitmap/Flood fill      
46 Determine if only one instance is running      
46 Egyptian division  
46 Narcissist    
46 Polynomial long division      
46 RPG attributes generator          
46 Set consolidation    
46 Water collected between towers      
45 Active object    
45 Associative array/Merging            
45 Determine if a string has all unique characters    
45 Execute a Markov algorithm      
45 Hofstadter Figure-Figure sequences    
45 ISBN13 check digit          
45 Image noise      
45 McNuggets problem      
45 OpenGL    
45 Parsing/Shunting-yard algorithm        
45 Password generator      
45 Send an unknown method call    
45 Sort numbers lexicographically
44 Bulls and cows/Player    
44 Carmichael 3 strong pseudoprimes      
44 Doubly-linked list/Definition          
44 Element-wise operations    
44 Elementary cellular automaton
44 GUI/Maximum window dimensions        
44 Generate Chess960 starting position      
44 Rosetta Code/Count examples    
44 Sparkline in unicode      
44 Ulam spiral (for primes)    
44 Verify distribution uniformity/Naive        
44 Visualize a tree    
43 Atomic updates      
43 Bitmap/Read a PPM file      
43 Keyboard input/Flush the keyboard buffer            
43 Knapsack problem/Bounded          
43 MD5/Implementation  
43 Sorting algorithms/Radix sort        
43 Subtractive generator      
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 Spinning rod animation/Text        
42 Terminal control/Dimensions        
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 Problem of Apollonius          
41 Remove vowels from a string            
41 S-expressions      
41 Speech synthesis          
41 Start from a main routine          
41 Sum to 100      
41 Table creation/Postal addresses            
41 Taxicab numbers      
41 Text between          
41 Variable size/Set            
40 Casting out nines      
40 Color of a screen pixel          
40 GUI enabling/disabling of controls          
40 Inverted index      
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 Colour pinstripe/Display      
39 Cramer's rule    
39 Euler's identity  
39 Fivenum      
39 Flipping bits game              
39 Julia set        
39 Knuth's algorithm S        
39 Magic squares of doubly even order        
39 Order disjoint list items      
39 Parallel calculations      
39 Parametric polymorphism        
39 Parsing/RPN to infix conversion        
39 Permutations by swapping        
39 Prime conspiracy      
39 Sorting Algorithms/Circle Sort            
39 The Name Game          
39 Topswops        
39 UTF-8 encode and decode      
38 Brazilian numbers          
38 Break OO privacy      
38 Constrained genericity      
38 Create a file on magnetic tape          
38 LU decomposition          
38 Musical scale                
38 Permutation test      
38 Permutations with repetitions            
38 Primorial numbers      
38 Pythagorean quadruples        
38 Sailors, coconuts and a monkey problem            
38 Scope/Function names and labels            
38 Statistics/Normal distribution          
37 Abbreviations, easy            
37 Bell numbers    
37 Chowla numbers          
37 Cuban primes    
37 Feigenbaum constant calculation        
37 File extension is in extensions list          
37 Find palindromic numbers in both binary and ternary bases    
37 Input/Output for lines of text            
37 Input/Output for pairs of numbers          
37 Kahan summation            
37 Long primes          
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 Sort a list of object identifiers    
37 Terminal control/Hiding the cursor          
37 Terminal control/Inverse video          
37 Vampire number      
36 21 game            
36 Abbreviations, simple            
36 Bitwise IO          
36 Convex hull      
36 Days between dates    
36 Events          
36 Fibonacci word/fractal        
36 Floyd-Warshall algorithm            
36 Function prototype            
36 Maze solving            
36 Metronome        
36 Minesweeper game        
36 Numerical integration/Gauss-Legendre Quadrature          
36 Pathological floating point problems        
36 Ranking methods          
36 Solve the no connection puzzle            
36 Substitution cipher      
36 Terminal control/Unicode output          
35 Approximate equality      
35 Arithmetic-geometric mean/Calculate Pi      
35 Bitmap/Bézier curves/Cubic            
35 Check output device is a terminal      
35 Find the intersection of a line with a plane        
35 Humble numbers          
35 Idiomatically determine all the lowercase and uppercase letters        
35 Largest number divisible by its digits        
35 Loops/With multiple ranges              
35 Multiline shebang        
35 Multiple regression          
35 Ordered partitions      
35 Penney's game            
35 Pinstripe/Display        
35 RIPEMD-160    
35 Square-free integers        
35 Sutherland-Hodgman polygon clipping      
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 Isqrt (integer square root) of X                
34 Pentagram            
34 Recaman's sequence            
34 Totient function    
33 Continued fraction/Arithmetic/Construct from rational number        
33 Executable library      
33 Integer roots        
33 Mertens function                
33 Mutex              
33 Negative base numbers        
33 Old Russian measure of length            
33 Parametrized SQL statement          
33 Parse command-line arguments            
33 Pattern matching          
33 RSA code      
33 Rosetta Code/Find bare lang tags                
33 Subset sum problem        
33 Topic variable            
32 Bitcoin/address validation      
32 Bitmap/Bézier curves/Quadratic            
32 Check input device is a terminal            
32 Cheryl's birthday        
32 Church numerals              
32 Decimal floating point number to binary            
32 Eban numbers          
32 Execute SNUSP          
32 Factorions              
32 Galton box animation                
32 Multi-dimensional array          
32 Multiplicative order          
32 Partition an integer x into n primes        
32 Primality by Wilson's theorem              
32 Pythagoras tree              
32 Resistor mesh            
32 Safe primes and unsafe primes            
32 Set puzzle            
32 Sorting algorithms/Patience sort              
32 Straddling checkerboard            
32 Type detection        
31 Apply a digital filter (direct form II transposed)      
31 Bitmap/Histogram        
31 Cycle detection            
31 Determine if two triangles overlap            
31 Faulhaber's formula          
31 Faulhaber's triangle          
31 First class environments            
31 Four is magic          
31 Keyboard macros              
31 Lah numbers            
31 Numeric error propagation        
31 Rosetta Code/Find unimplemented tasks        
31 Solve a Hidato puzzle                
31 Terminal control/Cursor movement          
31 Textonyms            
31 URL parser          
31 Use another language to call a function              
31 Write to Windows event log              
30 Bioinformatics/base count                
30 Chaocipher          
30 Check Machin-like formulas              
30 Deconvolution/1D        
30 Dice game probabilities          
30 FTP          
30 Implicit type conversion            
30 Koch curve            
30 Mersenne primes          
30 Mian-Chowla sequence              
30 Modular arithmetic        
30 Palindrome dates          
30 Perfect totient numbers            
30 Poker hand analyser          
30 Reflection/List properties            
30 Set of real numbers            
30 Simple database            
30 Terminal control/Preserve screen          
30 Xiaolin Wu's line algorithm              
30 Zhang-Suen thinning algorithm              
29 Arena storage pool        
29 Bacon cipher            
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 Parallel brute force      
29 Pragmatic directives        
29 Window creation/X11            
29 Word break problem          
28 AVL tree        
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 Ramsey's theorem                
28 Rosetta Code/Fix code tags          
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 Cut a rectangle              
27 Extra primes                
27 Go Fish                
27 Law of cosines - triples            
27 Machine code          
27 Natural sorting              
27 Nautical bell                  
27 Palindromic gapful numbers              
27 Paraffins                
27 Peano curve            
27 Polyspiral              
27 Safe addition          
27 Sexy primes          
27 Smarandache prime-digital sequence            
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 Card shuffles            
26 Create an object at a given address            
26 Distributed programming          
26 Fairshare between two and more            
26 First perfect square in base n with n unique digits                
26 First power of 2 that has leading decimal digits of 12              
26 Image convolution            
26 Kronecker product based fractals          
26 N-smooth numbers            
26 Nonoblock                
26 Numbers with prime digits whose sum is 13                  
26 Perlin noise            
26 Ramer-Douglas-Peucker line simplification              
26 Range consolidation              
26 Reflection/List methods          
26 Same fringe          
26 Super-d numbers          
26 Table creation            
26 The ISAAC Cipher            
26 Thiele's interpolation formula            
26 Zumkeller numbers            
25 A* search algorithm            
25 Abelian sandpile model                
25 Color wheel                
25 Elliptic curve arithmetic                
25 Fermat numbers            
25 Fraction reduction              
25 Generate random chess position            
25 Idiomatically determine all the characters that can be used for symbols                
25 Intersecting number wheels                
25 Length of an arc between two angles                
25 Magic squares of singly even order                
25 Möbius function                
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 Successive prime differences            
25 Tonelli-Shanks algorithm              
25 Welch's t-test                
25 Yahoo! search interface              
24 Audio alarm                  
24 Cipolla's algorithm          
24 Circular primes            
24 Function frequency          
24 Hough transform              
24 K-means++ clustering              
24 List rooted trees                
24 Mind boggling card trick              
24 Minimum positive multiple in base 10 using only 0 and 1              
24 Pell's equation              
24 Plasma effect            
24 Play recorded sounds              
24 Sierpinski pentagon          
24 Simulate input/Keyboard              
24 Unprimeable numbers            
23 Base58Check encoding            
23 Create an object/Native demonstration                
23 Deming's Funnel              
23 Elementary cellular automaton/Random Number Generator                
23 Finite state machine                  
23 Fixed length records              
23 Hunt the Wumpus            
23 Kolakoski sequence            
23 Linux CPU utilization                  
23 Longest common suffix                  
23 Lucky and even lucky numbers                  
23 Main step of GOST 28147-89                
23 Make a backup file              
23 Markov chain text generator          
23 Mayan numerals                
23 Monads/Maybe monad                
23 Numbers with equal rises and falls                  
23 Parse an IP Address              
23 Percolation/Mean run density              
23 Permutations/Rank of a permutation                
23 Record sound            
23 Reverse the gender of a string                
23 SOAP                  
23 Superpermutation minimisation                
23 Tau number                
23 Teacup rim text              
23 Total circles area                  
23 Video display modes                  
23 Words containing "the" substring                
22 Active Directory/Search for a user                
22 Alternade words                
22 Commatizing numbers              
22 Find duplicate files            
22 Find words with alternating vowels and consonants                  
22 Increasing gaps between consecutive Niven numbers                  
22 Matrix chain multiplication            
22 Next highest int from digits              
22 Pierpont primes            
22 Playfair cipher                  
22 Pseudo-random numbers/PCG32              
22 Snake and Ladder              
22 Spelling of ordinal numbers            
21 De Bruijn sequences                
21 Esthetic numbers            
21 Joystick position                
21 Kosaraju              
21 Magnanimous numbers              
21 Mastermind              
21 Median filter              
21 Native shebang                  
21 Numeric separator syntax              
21 Orbital elements              
21 Pig the dice game/Player              
21 Random Latin squares                
21 Reflection/Get source                
21 Shortest common supersequence                
21 Sokoban                
21 Solve a Hopido puzzle                  
21 Solve a Numbrix puzzle                  
21 Sorting algorithms/Cocktail sort with shifting bounds                  
21 Sum of divisors                  
21 Tau function                  
21 Window management                
21 Word wheel                
20 ASCII art diagram converter                
20 Addition chains              
20 Assertions in design by contract                
20 Data Encryption Standard              
20 Eertree                  
20 Find words which contains more than 3 e vowels                  
20 Index finite lists of positive integers                
20 Levenshtein distance/Alignment            
20 Long literals, with continuations                
20 Pseudo-random numbers/Xorshift star            
20 Strange plus numbers                  
20 Sum data type              
20 UPC                
20 Vigenère cipher/Cryptanalysis                
20 Vogel's approximation method                
19 Abelian sandpile model/Identity            
19 Bilinear interpolation              
19 Bioinformatics/Sequence mutation                
19 Bitcoin/public point to address              
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 Padovan sequence                
19 Perceptron                
19 Print debugging statement                    
19 Readline interface                
19 Simulate input/Mouse            
19 Sunflower fractal                  
19 Untrusted environment              
18 15 puzzle solver            
18 ABC words                  
18 Arithmetic coding/As a generalized change of radix              
18 Bin given limits            
18 Canonicalize CIDR              
18 Cistercian numerals                
18 Compiler/code generator                  
18 Draw pixel 2              
18 EKG sequence convergence                
18 File size distribution              
18 Find URI in text                  
18 Imaginary base numbers                
18 Line circle intersection                  
18 Metallic ratios                
18 Monads/Writer monad                  
18 Nimber arithmetic                
18 Odd words                
18 P-value correction                  
18 Pancake numbers                    
18 Percolation/Site percolation                
18 Primes - allocate descendants to their ancestors                  
18 SQL-based authentication              
18 Selective file copy                  
18 Sierpinski arrowhead curve              
18 Solve triangle solitare puzzle                  
18 Transportation problem                  
18 Twin primes                
18 Ulam numbers                
17 Bitmap/Read an image through a pipe              
17 Change e letters to i in words                  
17 Compiler/virtual machine interpreter                  
17 Find if a point is within a triangle                
17 Just in time processing on a character stream                  
17 Matrix digital rain                
17 NYSIIS                    
17 Nested templated data                  
17 Nonogram solver                
17 Polynomial synthetic division              
17 Prime words                
17 Product of divisors                  
17 Proof                    
17 Self numbers                    
17 Separate the house number from the street name                
17 Zeckendorf arithmetic              
16 Aspect oriented programming                
16 Biorhythms                  
16 Bitmap/PPM conversion through a pipe                
16 Changeable words                    
16 Chernick's Carmichael numbers                  
16 Free polyominoes enumeration              
16 HTTPS/Client-authenticated            
16 Latin Squares in reduced form                  
16 Most frequent k chars distance                  
16 Particle swarm optimization                  
16 Percolation/Bond percolation                    
16 Percolation/Mean cluster density                  
16 Pseudo-random numbers/Splitmix64              
16 Rare numbers                  
16 Self-hosting compiler              
16 Strange numbers                  
16 Tarjan              
16 Terminal control/Positional read                  
16 Vibrating rectangles                  
16 Word search                  
15 Calkin-Wilf sequence                
15 Compiler/syntax analyzer                  
15 Cyclotomic polynomial                
15 Exponentiation with infix operators in (or operating on) the base                
15 Find words which contains all the vowels                  
15 Functional coverage tree                  
15 Geometric algebra                  
15 Getting the number of decimals                    
15 Merge and aggregate datasets                    
15 Numerical integration/Adaptive Simpson's method                
15 OpenWebNet password                    
15 Peaceful chess queen armies                  
15 Rendezvous                
15 Retrieve and search chat history                
15 Singly-linked list/Element removal                
15 Snake                  
15 Square root by hand                    
15 Suffix tree                
15 Words from neighbour ones                  
14 Compare sorting algorithms' performance                    
14 Compiler/AST interpreter                  
14 Find words which first and last three letters are equals                  
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 Permutations with some identical elements                
14 Ramanujan's constant                  
14 Sequence: nth number with exactly n divisors                
14 Topological sort/Extracted top item                    
14 XML validation              
13 Banker's algorithm                  
13 Deconvolution/2D+                  
13 Factorial base numbers indexing permutations of a collection                  
13 Find words which contains most consonants                  
13 Pisano period                
13 SHA-256 Merkle tree                
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 Minimal steps down to 1                  
12 Print itself                    
12 Safe mode                
12 Sierpinski curve              
12 Simulated annealing                  
12 Sorting algorithms/Tree sort on a linked list                    
12 Tetris                  
12 Two bullet roulette                  
12 VList                  
12 XXXX redacted                  
11 Almkvist-Giullera formula for pi                  
11 Audio frequency generator                    
11 Checksumcolor                
11 Geohash                
11 Launch rocket with countdown and acceleration in stdout                  
11 Minkowski question-mark function                  
11 One-time pad                    
11 Pentomino tiling                  
11 Railway circuit                    
11 Resistance calculator                    
11 Run as a daemon or service                
11 Sierpinski square curve              
11 Text completion                  
11 Tree from nesting levels                    
10 Catmull–Clark subdivision surface                  
10 Colour pinstripe/Printer                  
10 Combinations with repetitions/Square digit chain                    
10 Common list elements                  
10 Common sorted list                  
10 Execute CopyPasta Language                    
10 External sort                    
10 Faces from a mesh                    
10 Find first missing positive                  
10 Non-transitive dice                  
10 Penrose tiling                
10 Powerful numbers                  
10 Pseudo-random numbers/Combined recursive generator MRG32k3a                
10 Spoof game                    
10 Three word location                    
10 Time-based one-time password algorithm                
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 Modified random distribution                  
9 Morpion solitaire                    
9 Parse EBNF                  
9 Pinstripe/Printer                  
9 Quoting constructs                    
9 Resistance network calculator                    
9 Rosetta Code/Tasks without examples                    
9 Starting a web browser                  
9 Suffixation of decimal numbers                    
9 Text to HTML                    
9 Tree datastructures                    
9 Untouchable numbers                    
9 War card game                    
8 Count the coins/0-1                    
8 Elliptic Curve Digital Signature Algorithm                    
8 Multidimensional Newton-Raphson method                  
8 Numerical and alphabetical suffixes                  
8 Pseudorandom number generator image                  
8 Range modifications                    
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 Fibonacci heap                    
7 Mayan calendar                    
7 P-Adic numbers, basic                    
7 Recursive descent parser generator                    
7 Robots                    
7 URL shortener                  
6 Bioinformatics/global alignment                    
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 Remote agent/Agent logic                  
6 Remote agent/Simulation                  
6 Rosetta Code/Run examples                    
6 Smallest enclosing circle problem                    
5 Addition-chain exponentiation                    
5 Audio overlap loop                    
5 Black Box                    
5 Boids                    
5 Chess player                  
5 Hexapawn                    
5 P-Adic square roots                    
5 Process SMIL directives in XML data                    
5 Random sentence from book                    
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 Tamagotchi emulator                    
4 Unicode polynomial equation                    
4 Using the Meetup.com API                    
4 Weather routing                    
4 WiktionaryDumps to words                    
3 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                    
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                    
2 15 puzzle game in 3D                    
2 CLI-based maze-game                    
2 IRC gateway                    
1 Blackjack strategy