Rosetta Code/Count examples/Full list/Tier 4

Revision as of 19:47, 28 March 2021 by Thundergnat (talk | contribs) (Update full list output)

Fourth 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
Fourth ten programming languages by number of task examples completed:
    ㉛ JavaScript    ㉜ Ring          ㉝ AutoHotkey    ㉞ FreeBASIC     ㉟ F_Sharp      
    ㊱ Delphi        ㊲ Clojure       ㊳ ALGOL_68      ㊴ Unicon        ㊵ PureBasic    
As of 2021-03-28T19:45:32Z :: Tasks: 1099 :: Draft Tasks:246 :: Total Tasks: 1345 :: Total Examples: 74566
Count Task
482 Hello world/Text
321 99 bottles of beer
315 100 doors
312 FizzBuzz
286 Factorial
286 Fibonacci sequence
274 Comments
265 A+B
260 Empty program
238 Function definition
229 Loops/Infinite
225 Loops/While
223 Arrays
223 Reverse a string
221 Ackermann function
206 Loops/For
200 Conditional structures  
198 Greatest common divisor
197 Greatest element of a list
196 Arithmetic/Integer
187 Array concatenation
186 Repeat a string
185 Even or odd
185 Integer comparison
183 Averages/Arithmetic mean
181 Increment a numerical string
177 Hello world/Graphical
173 Copy a string
169 Boolean values
168 Loops/Downward for
168 Sieve of Eratosthenes
167 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
163 Sum and product of an array
162 Array length
162 Loops/Foreach
162 String length
161 Binary digits
161 Towers of Hanoi
160 Integer sequence
160 Loops/Break  
160 Palindrome detection
159 Sum of a series
158 String case
156 Tokenize a string  
155 Generic swap
155 Leap year
155 Rot-13
154 Dot product
154 Empty string
154 Sum of squares
153 Logical operations
152 Hailstone sequence
150 Filter
149 Associative array/Creation  
148 Quine  
147 Sort an integer array
147 Sorting algorithms/Bubble sort
145 Execute a system command
144 Caesar cipher
144 Factors of an integer
143 Guess the number  
143 Loop over multiple arrays simultaneously
143 Roman numerals/Encode
143 System time
142 Higher-order functions
141 Remove duplicate elements
141 Sorting algorithms/Quicksort  
140 Determine if a string is numeric
140 User input/Text
139 File input/output
137 Bitwise operations
137 Day of the week
136 Hello world/Standard error
136 Luhn test of credit card numbers  
136 Primality by trial division
135 Command-line arguments
135 Read entire file
134 Create a file
134 Stack
133 Loops/Continue
132 Mutual recursion
132 Substring
131 Sleep
130 Generate lower case ASCII alphabet
130 Happy numbers
129 Least common multiple
129 Literals/String  
129 Pascal's triangle
129 Zero to the zero power
128 Check that file exists
128 Date format
128 Flatten a list  
127 ABC problem
124 Binary search  
124 Compound data type
124 Program termination
123 Balanced brackets
123 Literals/Integer
122 Detect division by zero
122 Ethiopian multiplication
122 Function composition  
122 Include a file  
122 Variables  
121 Formatted numeric output
121 Loops/Nested  
120 Knuth shuffle
120 N-queens problem
119 Associative array/Iteration  
119 Averages/Root mean square
118 Mandelbrot set
118 Null object
118 Read a file line by line
117 Count occurrences of a substring
117 Roman numerals/Decode
117 Search a list
117 Sorting algorithms/Insertion sort
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 Delete a file
115 File size
115 Guess the number/With feedback
115 Identity matrix
114 Classes  
114 Matrix transposition
113 Align columns  
113 Babbage problem    
113 Environment variables
113 Find limit of recursion
113 Input loop
113 Matrix multiplication  
113 String matching
112 Averages/Median
112 Letter frequency
112 Pick random element
112 Random numbers
112 Rename a file
111 Hostname  
111 Return multiple values
110 HTTP  
110 Pangram checker
110 Perfect numbers
109 Arithmetic/Complex  
109 Haversine formula
108 Accumulator factory    
108 Assertions  
108 Catalan numbers
108 Conway's Game of Life  
108 Temperature conversion
107 Infinity    
106 Permutations
106 Substring/Top and tail
106 Variadic function    
105 Averages/Pythagorean means
105 Horner's rule for polynomial evaluation  
105 Levenshtein distance  
105 Program name
105 Run-length encoding
105 Strip a set of characters from a string
104 Anonymous recursion    
104 Arithmetic-geometric mean
104 Evaluate binomial coefficients
104 Reverse words in a string  
104 String append
103 Look-and-say sequence
103 Prime decomposition
103 Regular expressions  
103 Strip whitespace from a string/Top and tail
103 Zig-zag matrix  
102 Exceptions    
102 Nth root
102 Sierpinski triangle  
102 String interpolation (included)
101 Combinations
101 Ordered words
101 Queue/Definition  
101 Sorting algorithms/Merge sort  
101 Trigonometric functions  
100 Comma quibbling  
99 Bulls and cows  
99 Middle three digits  
99 Shell one-liner  
99 Short-circuit evaluation
99 Sorting algorithms/Selection sort
98 Call a function      
98 String prepend
98 Sum multiples of 3 and 5
97 24 game    
97 Arbitrary-precision integers (included)    
97 Create a two-dimensional array at runtime
97 Range extraction
96 Interactive programming          
96 Power set  
96 Range expansion
96 Sum digits of an integer
96 Y combinator          
95 Sorting algorithms/Gnome sort
94 Collections  
94 Enumerations
94 Time a function    
94 Vector products  
93 Digital root
93 Evolutionary algorithm
93 First-class functions    
93 Sierpinski carpet  
93 The Twelve Days of Christmas  
93 Walk a directory/Non-recursively  
92 Averages/Mode  
92 Execute Brain****  
92 Exponentiation operator
92 Inheritance/Single      
92 MD5    
92 N'th  
92 One-dimensional cellular automata    
92 Sequence of non-squares  
92 Sorting algorithms/Cocktail sort    
91 Create an HTML table
90 Cumulative standard deviation  
90 JSON          
90 Random number generator (included)    
90 Sort using a custom comparator  
89 Averages/Simple moving average
89 Dragon curve    
89 Forward difference
89 Sorting algorithms/Bogosort  
89 String comparison  
89 Symmetric difference    
88 Entropy
88 Hello world/Newbie          
88 Josephus problem    
88 Langton's ant  
88 Monty Hall problem
87 Gray code  
87 Greatest subsequential sum
87 Hamming numbers  
87 Harshad or Niven series  
87 Price fraction
86 CSV data manipulation
86 Five weekends
86 Menu  
85 Abstract type          
85 Abundant, deficient and perfect number classifications    
85 Compare a list of strings  
85 Number names  
85 Tree traversal      
84 CSV to HTML translation    
84 Map range  
84 Sorting algorithms/Heapsort
83 Catamorphism  
83 Hofstadter Q sequence  
83 Last Friday of each month      
83 Non-decimal radices/Convert      
83 Queue/Usage    
83 Simple windowed application    
83 Sort an array of composite structures
83 Walk a directory/Recursively  
83 Window creation
82 Closures/Value capture      
82 File modification time
82 Number reversal game      
82 SEDOLs
82 Set  
82 Terminal control/Clear the screen      
81 Box the compass
81 Count in factors
81 Introspection    
81 Monte Carlo methods  
80 Amicable pairs      
80 Calculating the value of e    
80 Literals/Floating point          
80 Terminal control/Ringing the terminal bell    
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 Sorting algorithms/Shell sort    
79 Spiral matrix  
79 Web scraping    
78 Bitmap    
78 Concurrent computing      
78 Date manipulation  
78 Find common directory path
78 Find the last Sunday of each month  
78 Order two numerical lists  
78 Playing cards    
78 Read a specific line from a file  
78 Show the epoch    
78 Split a character string based on change of character      
78 Top rank per group      
78 XML/Input        
77 Address of a variable          
77 CRC-32  
77 Floyd's triangle  
77 Jensen's Device      
77 Knapsack problem/0-1          
77 Linear congruential generator    
77 Multifactorial      
77 Operator precedence    
77 Proper divisors  
77 Pythagorean triples  
77 Repeat      
77 Sockets        
77 Sorting algorithms/Counting sort    
77 Strip comments from a string
77 Word wrap    
76 Call an object method          
76 Find the missing permutation    
76 Here document        
76 Keyboard input/Obtain a Y or N response  
76 Munchausen numbers    
76 URL encoding      
75 Almost prime
75 Dynamic variable names          
75 Kaprekar numbers    
75 Lucas-Lehmer test      
75 Man or boy test        
75 Modular inverse
75 Non-decimal radices/Output  
74 Anagrams/Deranged anagrams
74 Averages/Mean angle  
74 Calendar    
74 List comprehensions      
74 Parsing/RPN calculator algorithm        
74 Phrase reversals      
74 Population count  
74 Read a configuration file        
74 SHA-1      
74 Semordnilap  
74 Sorting algorithms/Comb sort      
74 Soundex  
73 Equilibrium index  
73 Fibonacci n-step number sequences
73 Gamma function  
73 Hello world/Web server          
73 Pi  
73 Unicode variable names    
73 Write entire file    
72 Animation  
72 Empty directory    
72 Exceptions/Catch an exception thrown in a nested call        
72 Execute HQ9+  
72 Multiple distinct objects    
72 SHA-256    
72 Singly-linked list/Element definition    
72 Special characters        
72 Sudoku    
71 AKS test for primes      
71 Convert seconds to compound duration    
71 Longest common subsequence  
71 Show ASCII table    
71 Take notes on the command line      
70 Bitmap/Bresenham's line algorithm  
70 Call a foreign-language function        
70 Currying        
70 Enforced immutability  
70 Euler's sum of powers conjecture    
70 Largest int from concatenated ints  
70 Polymorphism      
70 Quaternion type      
70 Rock-paper-scissors    
70 Sort disjoint sublist        
70 Stair-climbing puzzle        
70 Vigenère cipher    
70 Write float arrays to a text file      
70 Zeckendorf number representation    
69 15 puzzle game        
69 Catalan numbers/Pascal's triangle    
69 Closest-pair problem  
69 Combinations with repetitions      
69 Constrained random points on a circle
69 Draw a sphere        
69 Flow-control structures        
69 Four bit adder      
69 Guess the number/With feedback (player)  
69 IBAN      
69 Numerical integration      
69 Self-describing numbers      
69 Sorting algorithms/Stooge sort    
68 Euler method  
68 Extend your language        
68 Horizontal sundial calculations    
68 Jump anywhere          
68 Magic squares of odd order      
68 Maze generation    
68 Old lady swallowed a fly              
68 Priority queue        
68 Text processing/Max licenses in use        
68 Trabb Pardo–Knuth algorithm      
67 Benford's law  
67 Fork          
67 Fractal tree    
67 Named parameters          
67 Nested function        
67 Sorting algorithms/Pancake sort  
66 Arithmetic/Rational        
66 Chinese remainder theorem        
66 Fast Fourier transform              
66 One of n lines in a file  
66 Pernicious numbers      
66 Roots of a function    
66 Runtime evaluation            
66 Sort stability      
66 Special variables        
66 Strip control codes and extended characters from a string  
66 Unix/ls            
65 Amb    
65 Documentation      
65 General FizzBuzz        
65 HTTPS        
65 Morse code      
65 Narcissistic decimal number    
65 Optional parameters      
65 Remove lines from a file  
65 Sequence of primes by trial division      
65 Variable size/Get      
64 Barnsley fern      
64 Continued fraction        
64 Hofstadter-Conway $10,000 sequence  
64 Inheritance/Multiple        
64 Reduced row echelon form        
64 Roots of a quadratic function      
64 Thue-Morse        
64 XML/Output        
63 Anti-primes        
63 Factors of a Mersenne number    
63 Memory allocation        
63 Non-decimal radices/Input    
63 Singly-linked list/Element insertion    
63 Write language name in 3D ASCII      
62 Animate a pendulum    
62 Cholesky decomposition      
62 Circles of given radius through two points        
62 Exponentiation order            
62 Globally replace text in several files      
62 Mouse position  
62 Plot coordinate pairs    
62 Probabilistic choice    
62 Rep-string    
62 Runge-Kutta method        
62 Semiprime      
62 Undefined values      
61 Angle difference between two bearings          
61 Averages/Mean time of day        
61 Department numbers    
61 Get system command output          
61 Modular exponentiation      
61 Sorting algorithms/Sleep sort        
61 Van der Corput sequence      
60 Arithmetic evaluation    
60 Best shuffle      
60 Binary strings        
60 Knapsack problem/Continuous            
60 Partial function application          
60 Test a function    
60 Tic-tac-toe          
59 24 game/Solve          
59 9 billion names of God the integer          
59 Bitmap/Write a PPM file              
59 Draw a clock      
59 Dutch national flag problem      
59 Emirp primes    
59 Generator/Exponential          
59 Host introspection      
59 Huffman coding        
59 Jewels and stones        
59 Knapsack problem/Unbounded          
59 Sort three variables        
59 Truncatable primes      
59 Unicode strings              
59 Word frequency      
58 Add a variable to a class instance at runtime            
58 Brownian tree      
58 Compile-time calculation          
58 Damm algorithm    
58 Hash join          
58 Knight's tour        
58 Miller–Rabin primality test    
58 Odd word problem    
58 User input/Graphical      
58 Yin and yang      
57 2048      
57 4-rings or 4-squares puzzle        
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 Ludic numbers  
57 Mad Libs        
57 Matrix-exponentiation operator            
57 Multisplit    
57 Random number generator (device)          
57 Scope modifiers        
57 Sorting algorithms/Bead sort        
57 Sorting algorithms/Permutation sort        
57 Stem-and-leaf plot    
57 Stern-Brocot sequence      
57 Terminal control/Display an extended character            
57 Two sum    
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 Terminal control/Coloured text          
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 Grayscale image          
55 Long year        
55 Modulinos            
55 Munching squares            
55 Stack traces          
55 Subleq                
55 Topological sort            
54 CUSIP        
54 Draw a pixel      
54 Quickselect algorithm    
54 Runtime evaluation/In an environment          
54 Sierpinski triangle/Graphical          
54 Synchronous concurrency        
54 Terminal control/Cursor positioning          
54 XML/XPath            
53 Abundant odd numbers      
53 Bernoulli 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 Statistics/Basic            
53 Ternary logic        
53 Unbias a random generator        
53 XML/DOM serialization            
52 First-class functions/Use numbers analogously            
52 Inverted syntax            
52 Iterated digits squaring          
52 Keyboard input/Keypress check    
52 Longest increasing subsequence          
52 Loops/Increment loop index within loop body        
52 Polynomial regression                
52 Strip block comments      
52 Text processing/2        
51 Call a function in a shared library            
51 Determine if a string has all the same characters    
51 Dining philosophers          
51 FASTA format        
51 Farey sequence            
51 Gaussian elimination          
51 Heronian triangles        
51 Longest common substring        
51 Magic 8-ball      
51 Move-to-front algorithm      
51 Seven-sided dice from five-sided dice      
51 Smith numbers    
51 Wireworld        
50 Archimedean spiral        
50 Attractive numbers          
50 Base64 decode data              
50 Chinese zodiac    
50 Colour bars/Display        
50 Copy stdin to stdout          
50 Determine if a string is collapsible    
50 Dijkstra's algorithm    
50 Find the intersection of two lines      
50 GUI component interaction        
50 Holidays related to Easter          
50 Make directory path          
50 Perfect shuffle        
50 Pig the dice game          
50 Rate counter          
50 Respond to an unknown method call              
50 Sattolo cycle          
50 Universal Turing machine            
50 Validate International Securities Identification Number            
50 Vector            
49 Fractran        
49 Jaro distance          
49 Last letter-first letter          
49 Pascal matrix generation          
49 Shoelace formula for polygonal area          
49 Text processing/1        
49 Tokenize a string with escaping            
48 Chaos game          
48 Determinant and permanent                
48 Doubly-linked list/Element insertion        
48 Doubly-linked list/Traversal      
48 Extensible prime generator    
48 Greyscale bars/Display        
48 Kernighans large earthquake problem                
48 Metaprogramming            
48 Naming conventions            
48 Polymorphic copy          
48 Polynomial long division              
48 RPG attributes generator            
48 Search a list of records            
48 Square but not cube          
48 Zebra puzzle            
47 Append a record to the end of a text file                
47 Echo server        
47 Execute a Markov algorithm          
47 History variables            
47 Hofstadter Figure-Figure sequences          
47 ISBN13 check digit          
47 Kronecker product          
47 Longest string challenge        
47 Password generator            
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 Set consolidation          
46 Sort numbers lexicographically              
46 Visualize a tree          
46 Water collected between towers            
45 Active object          
45 Associative array/Merging    
45 Determine if a string has all unique characters    
45 Image noise        
45 McNuggets problem        
45 OpenGL      
45 Parsing/Shunting-yard algorithm          
45 Send an unknown method call                
45 Sorting algorithms/Radix sort            
45 Verify distribution uniformity/Naive        
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 Subtractive generator            
44 Ulam spiral (for primes)              
43 Atomic updates          
43 Bitmap/Read a PPM file              
43 Cantor set          
43 Hickerson series of almost integers            
43 Keyboard input/Flush the keyboard buffer          
43 Knapsack problem/Bounded              
43 MD5/Implementation            
43 Percentage difference between images          
43 Spinning rod animation/Text              
43 Sum to 100          
43 Taxicab numbers          
42 Aliquot sequence classifications              
42 Calendar - for "REAL" programmers          
42 Currency        
42 Digital root/Multiplicative digital root            
42 Gapful numbers          
42 Nim game            
42 Permutations/Derangements          
42 Secure temporary file            
42 Table creation/Postal addresses            
42 Terminal control/Dimensions            
42 Text between          
42 Truth table              
42 Twelve statements                
42 Van Eck sequence            
42 Voronoi diagram      
41 Balanced ternary              
41 Bitmap/Midpoint circle algorithm            
41 Combinations and permutations              
41 Deepcopy          
41 Fusc sequence          
41 Hilbert curve          
41 Parallel calculations          
41 Pascal's triangle/Puzzle          
41 Problem of Apollonius            
41 Remove vowels from a string      
41 S-expressions            
41 Sorting Algorithms/Circle Sort              
41 Sorting algorithms/Strand sort            
41 Speech synthesis            
41 Start from a main routine        
41 Variable size/Set            
40 Casting out nines              
40 Color of a screen pixel    
40 Euler's identity              
40 Flipping bits game            
40 GUI enabling/disabling of controls          
40 Inverted index          
40 Primorial numbers          
40 Summarize and say sequence            
40 The Name Game            
40 UTF-8 encode and decode            
40 Variable-length quantity                
39 Abbreviations, automatic                
39 Brace expansion                
39 Chowla numbers                
39 Colour pinstripe/Display          
39 Cramer's rule                
39 Create a file on magnetic tape          
39 Fivenum                
39 Julia set          
39 Knuth's algorithm S              
39 Magic squares of doubly even order              
39 Musical scale        
39 Order disjoint list items              
39 Parametric polymorphism                
39 Parsing/RPN to infix conversion          
39 Permutation test                  
39 Permutations by swapping          
39 Permutations with repetitions            
39 Prime conspiracy              
39 Ray-casting algorithm            
39 Recaman's sequence              
39 Topswops                  
38 Brazilian numbers            
38 Break OO privacy              
38 Constrained genericity                  
38 Cuban primes          
38 Days between dates                
38 Feigenbaum constant calculation              
38 Kahan summation              
38 LU decomposition                  
38 MAC Vendor Lookup            
38 Metered concurrency                
38 Pathological floating point problems        
38 Pythagorean quadruples            
38 QR decomposition                    
38 Ranking methods                
38 Read a file character by character/UTF8              
38 Sailors, coconuts and a monkey problem              
38 Scope/Function names and labels              
38 Sort a list of object identifiers                
38 Statistics/Normal distribution                
37 21 game          
37 Abbreviations, easy              
37 Bell numbers            
37 File extension is in extensions list            
37 Find palindromic numbers in both binary and ternary bases            
37 Function prototype      
37 Input/Output for lines of text            
37 Input/Output for pairs of numbers              
37 Long primes              
37 Loops/Wrong ranges                
37 Lychrel numbers              
37 MD4          
37 Metronome          
37 Object serialization                  
37 Substitution cipher                
37 Terminal control/Hiding the cursor              
37 Terminal control/Inverse video              
37 Vampire number        
36 Abbreviations, simple              
36 Bitwise IO            
36 Convex hull                
36 Determine if a string is squeezable          
36 Display a linear combination              
36 Egyptian fractions                
36 Events        
36 Fibonacci word/fractal        
36 Find the intersection of a line with a plane                
36 Floyd-Warshall algorithm              
36 Humble numbers            
36 Idiomatically determine all the lowercase and uppercase letters          
36 Largest number divisible by its digits              
36 Loops/With multiple ranges            
36 Maze solving        
36 Minesweeper game            
36 Numerical integration/Gauss-Legendre Quadrature                
36 Penney's game                
36 Pinstripe/Display          
36 RIPEMD-160              
36 Solve the no connection puzzle                
36 Sutherland-Hodgman polygon clipping                
36 Terminal control/Unicode output                
36 Test integerness                  
35 Approximate equality                
35 Arithmetic-geometric mean/Calculate Pi                
35 Bitmap/Bézier curves/Cubic          
35 Check output device is a terminal                    
35 Isqrt (integer square root) of X            
35 Multiline shebang                
35 Multiple regression                  
35 Ordered partitions                
35 Parametrized SQL statement              
35 Pentagram              
35 Square-free integers                
35 Totient function                
34 Conjugate transpose                  
34 Entropy/Narcissist              
34 Pattern matching                
34 Primality by Wilson's theorem              
34 RSA code          
34 Subset sum problem                
33 Cheryl's birthday                
33 Continued fraction/Arithmetic/Construct from rational number              
33 Executable library                
33 Factorions          
33 Integer roots                  
33 Mertens function                
33 Mutex                
33 Negative base numbers              
33 Old Russian measure of length              
33 Parse command-line arguments          
33 Partition an integer x into n primes                
33 Poker hand analyser            
33 Pythagoras tree          
33 Rosetta Code/Find bare lang tags                  
33 Solve a Hidato puzzle                  
33 Topic variable              
32 Bioinformatics/base count        
32 Bitcoin/address validation              
32 Bitmap/Bézier curves/Quadratic                
32 Check input device is a terminal                  
32 Church numerals                
32 Decimal floating point number to binary              
32 Determine if two triangles overlap              
32 Eban numbers                
32 Execute SNUSP          
32 Four is magic          
32 Galton box animation            
32 Lah numbers                  
32 Multi-dimensional array              
32 Multiplicative order                
32 Resistor mesh                  
32 Safe primes and unsafe primes            
32 Set puzzle                
32 Sorting algorithms/Patience sort                
32 Straddling checkerboard        
32 Textonyms              
32 Type detection                
31 Apply a digital filter (direct form II transposed)                  
31 Bitmap/Histogram                  
31 Cycle detection                  
31 Faulhaber's formula                    
31 Faulhaber's triangle              
31 First class environments                
31 Keyboard macros      
31 Numeric error propagation            
31 Palindrome dates          
31 Perfect totient numbers            
31 Reflection/List properties                  
31 Rosetta Code/Find unimplemented tasks          
31 Set of real numbers              
31 Terminal control/Cursor movement                  
31 URL parser              
31 Use another language to call a function                
31 Write to Windows event log          
30 Chaocipher              
30 Check Machin-like formulas                
30 Checkpoint synchronization                
30 Deconvolution/1D                    
30 Dice game probabilities                  
30 Diversity prediction theorem                
30 Draw a rotating cube          
30 FTP                    
30 HTTPS/Authenticated              
30 Implicit type conversion                
30 Koch curve            
30 Mersenne primes                  
30 Mian-Chowla sequence            
30 Modular arithmetic                  
30 Parallel brute force            
30 Pragmatic directives                
30 Sequence: smallest number with exactly n divisors          
30 Simple database                    
30 Terminal control/Preserve screen                  
30 Window creation/X11                
30 Xiaolin Wu's line algorithm              
30 Zhang-Suen thinning algorithm              
29 Arena storage pool                  
29 Bacon cipher                  
29 Chat server                  
29 Death Star              
29 Decision tables          
29 Gauss-Jordan matrix inversion                  
29 Jacobi symbol                
29 Memory layout of a data structure                
29 Rosetta Code/Fix code tags          
29 Sequence: smallest number greater than previous term with exactly n divisors            
29 State name puzzle                
29 Stream merge                  
29 Update a configuration file              
29 Word break problem              
28 AVL tree                    
28 Chemical calculator                  
28 Compiler/lexical analyzer                
28 Extra primes              
28 Find first and last set bit of a long integer            
28 Find largest left truncatable prime in a given base                  
28 First power of 2 that has leading decimal digits of 12            
28 Formal power series                  
28 Honeycombs              
28 Peano curve                
28 Perlin noise                
28 Polyspiral                
28 Ramsey's theorem                
28 Sexy primes            
28 Smarandache prime-digital sequence            
28 Sorting algorithms/Cycle sort                
28 Strong and weak primes                
28 Sum and product puzzle                  
28 Super-d numbers                
28 Thiele's interpolation formula                  
28 Verify distribution uniformity/Chi-squared test                    
28 Yellowstone sequence              
27 Active Directory/Connect                
27 Angles (geometric), normalization and conversion                
27 Burrows–Wheeler transform                    
27 Chebyshev coefficients                    
27 Create an object at a given address            
27 Cut a rectangle                  
27 Go Fish            
27 Law of cosines - triples              
27 Machine code                
27 Natural sorting                  
27 Nautical bell                
27 Palindromic gapful numbers              
27 Paraffins                  
27 Range consolidation              
27 Reflection/List methods              
27 Safe addition                  
27 Superellipse                
27 Table creation                  
27 Tau number            
27 The ISAAC Cipher                
27 Weird numbers                  
27 World Cup group stage                    
27 Zumkeller numbers                  
26 Birthday problem                
26 Card shuffles                    
26 Distributed programming                
26 Fairshare between two and more                
26 Fermat numbers                  
26 First perfect square in base n with n unique digits              
26 Image convolution                  
26 Kronecker product based fractals                  
26 N-smooth numbers                  
26 Nonoblock                  
26 Numbers with prime digits whose sum is 13            
26 Ramer-Douglas-Peucker line simplification                  
26 Same fringe                
26 Solve a Holy Knight's tour                
25 A* search algorithm                
25 Abelian sandpile model                
25 Color wheel                  
25 Elliptic curve arithmetic                    
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 Minimum positive multiple in base 10 using only 0 and 1              
25 Möbius function            
25 Parse an IP Address                
25 Pell's equation                
25 Pierpont primes            
25 Plasma effect              
25 Play recorded sounds            
25 RCRPG            
25 Sequence of primorial primes              
25 Stirling numbers of the first kind              
25 Stirling numbers of the second kind                
25 Successive prime differences                
25 Tau function            
25 Teacup rim text              
25 Tonelli-Shanks algorithm                
25 Unprimeable numbers                  
25 Welch's t-test                    
25 Words containing "the" substring            
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 Linux CPU utilization                  
24 List rooted trees                
24 Mayan numerals              
24 Mind boggling card trick              
24 Monads/Maybe monad          
24 Percolation/Mean run density                  
24 Permutations/Rank of a permutation                
24 Sierpinski pentagon                  
24 Simulate input/Keyboard              
24 Strange plus numbers              
24 Sum of divisors              
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 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 Next highest int from digits              
23 Numbers with equal rises and falls              
23 Playfair cipher                  
23 Record sound                  
23 Reverse the gender of a string                
23 SOAP            
23 Superpermutation minimisation                  
23 Total circles area                    
23 Video display modes                
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 Long literals, with continuations                
22 Magnanimous numbers                
22 Matrix chain multiplication                    
22 Pig the dice game/Player                  
22 Pseudo-random numbers/PCG32              
22 Random Latin squares              
22 Shortest common supersequence                  
22 Snake and Ladder                  
22 Solve a Hopido puzzle                  
22 Sorting algorithms/Cocktail sort with shifting bounds                    
22 Spelling of ordinal numbers                
21 ASCII art diagram converter                  
21 Data Encryption Standard                  
21 De Bruijn sequences                    
21 Eertree                  
21 Esthetic numbers              
21 Joystick position              
21 Kosaraju                    
21 Mastermind              
21 Median filter                    
21 Monads/List monad          
21 Native shebang                  
21 Numeric separator syntax                  
21 Orbital elements                    
21 Pseudo-random numbers/Xorshift star                
21 Reflection/Get source            
21 Sokoban                  
21 Solve a Numbrix puzzle                  
21 Strange unique prime triplets              
21 Window management            
21 Word wheel              
20 Addition chains                    
20 Assertions in design by contract                  
20 Bin given limits                  
20 Bioinformatics/Sequence mutation                
20 Bitcoin/public point to address                  
20 Cistercian numerals                  
20 Find words which contains more than 3 e vowels              
20 Index finite lists of positive integers                  
20 Levenshtein distance/Alignment                    
20 Padovan sequence              
20 Product of divisors              
20 Self numbers                
20 Shift list elements to left by 3          
20 Sum data type                
20 UPC                  
20 Vigenère cipher/Cryptanalysis                    
20 Vogel's approximation method                    
19 Abelian sandpile model/Identity                  
19 Bilinear interpolation                    
19 Code segment unload                    
19 Color quantization                  
19 Common sorted list            
19 Elementary cellular automaton/Infinite length                    
19 K-d tree                    
19 Knuth's power tree                  
19 Line circle intersection                    
19 Montgomery reduction                    
19 N-body problem                    
19 Names to numbers                  
19 P-value correction                    
19 Pancake numbers                
19 Perceptron                
19 Percolation/Site percolation                    
19 Polynomial synthetic division                  
19 Primes - allocate descendants to their ancestors                  
19 Print debugging statement                  
19 Readline interface                    
19 Selective file copy                  
19 Sierpinski arrowhead curve                  
19 Simulate input/Mouse              
19 Strange numbers                
19 Sunflower fractal              
19 Untrusted environment                    
18 15 puzzle solver                  
18 ABC words              
18 Arithmetic coding/As a generalized change of radix                  
18 Canonicalize CIDR                  
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 Metallic ratios                  
18 Monads/Writer monad                
18 Nimber arithmetic                  
18 Odd words              
18 Primes which sum of digits is 25              
18 SQL-based authentication                    
18 Solve triangle solitare puzzle                    
18 Transportation problem                    
18 Twin primes            
18 Ulam numbers                
17 Biorhythms                  
17 Bitmap/Read an image through a pipe                  
17 Change e letters to i in words          
17 Compiler/virtual machine interpreter                    
17 Exponentiation with infix operators in (or operating on) the base                
17 Find if a point is within a triangle                    
17 Just in time processing on a character stream                    
17 Matrix digital rain                    
17 Most frequent k chars distance                
17 NYSIIS                    
17 Nested templated data                    
17 Nice primes                
17 Nonogram solver                  
17 Particle swarm optimization                  
17 Percolation/Bond percolation                    
17 Percolation/Mean cluster density                    
17 Prime words              
17 Proof                    
17 Separate the house number from the street name                    
17 Zeckendorf arithmetic                    
16 Aspect oriented programming                
16 Bitmap/PPM conversion through a pipe                    
16 Calkin-Wilf sequence                
16 Changeable words                
16 Chernick's Carmichael numbers                  
16 Free polyominoes enumeration                    
16 HTTPS/Client-authenticated                    
16 Latin Squares in reduced form                  
16 Padovan n-step number sequences                
16 Partition function P                  
16 Peaceful chess queen armies                    
16 Pseudo-random numbers/Splitmix64                  
16 Ramanujan's constant                    
16 Rare numbers                
16 Retrieve and search chat history                  
16 Self-hosting compiler                  
16 Snake            
16 Suffix tree                  
16 Tarjan                    
16 Terminal control/Positional read                  
16 Vibrating rectangles                
16 Word search                    
15 Compiler/syntax analyzer                    
15 Cyclotomic polynomial                    
15 Find words which contains all the vowels            
15 Four is the number of letters in the ...                    
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 Rendezvous                
15 Sequence: nth number with exactly n divisors                  
15 Singly-linked list/Element removal                  
15 Square root by hand                
15 Words from neighbour ones              
14 Additive primes                
14 Compare sorting algorithms' performance                  
14 Compiler/AST interpreter                    
14 Erdős-primes                
14 Find words which first and last three letters are equals              
14 Generalised floating point addition                  
14 Gradient descent                  
14 Jaro-Winkler distance                
14 Logistic curve fitting in epidemiology                    
14 Permutations with some identical elements                    
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 prime n for that reversed n is also prime              
13 Find prime numbers of the form n*n*n+2              
13 Find words which contains most consonants                
13 Pisano period                    
13 Print itself                  
13 SHA-256 Merkle tree                  
13 Sine wave                
12 Canny edge detector                    
12 Common list elements              
12 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
12 Greed                    
12 Interactive help                    
12 Launch rocket with countdown and acceleration in stdout                  
12 Longest palindromic substrings                
12 Minimal steps down to 1                    
12 Pseudo-random numbers/Combined recursive generator MRG32k3a                    
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 Find first missing positive                
11 Geohash                  
11 Minkowski question-mark function                  
11 Next special primes                
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 Smallest square that begins with n                
11 Text completion                  
11 Tree from nesting levels                    
11 Unit testing                    
11 Untouchable numbers                
11 Using a speech engine to highlight words                
10 Catmull–Clark subdivision surface                    
10 Colour pinstripe/Printer                    
10 Combinations with repetitions/Square digit chain                    
10 Cousin primes                  
10 Execute CopyPasta Language                    
10 External sort                    
10 Faces from a mesh                    
10 Modified random distribution                    
10 Non-transitive dice                  
10 Penrose tiling                    
10 Pinstripe/Printer                    
10 Powerful numbers                    
10 Spoof game                  
10 Suffixation of decimal numbers                    
10 Three word location                  
10 Time-based one-time password algorithm                    
9 Bioinformatics/Subsequence                  
9 Curve that touches three points                  
9 Display an outline as a nested table                  
9 Fibonacci matrix-exponentiation                    
9 French Republican calendar                  
9 Graph colouring                    
9 Hourglass puzzle                    
9 IPC via named pipe                    
9 Morpion solitaire                  
9 Parse EBNF                    
9 Pseudorandom number generator image                  
9 Quoting constructs                  
9 Range modifications                  
9 Resistance network calculator                    
9 Rosetta Code/Tasks without examples                    
9 Starting a web browser                    
9 Text to HTML                    
9 Tree datastructures                    
9 User defined pipe and redirection operators                  
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 Rosetta Code/Rank languages by number of users                    
8 Sort an outline at every level                  
8 Square Form Factorization                  
7 16 puzzle game                
7 Brace expansion using ranges                  
7 Compiler/Verifying syntax                    
7 Fibonacci heap                    
7 Mayan calendar                    
7 OpenGL/Utah Teapot                    
7 P-Adic numbers, basic                  
7 Random sentence from book                  
7 Recursive descent parser generator                    
7 Robots                    
7 Special factorials                    
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 Price list behind API                    
6 Remote agent/Agent logic                    
6 Remote agent/Simulation                    
6 Rosetta Code/Run examples                    
6 Smallest enclosing circle problem                    
6 Terminal control/Restricted width positional input/No wrapping                    
6 Terminal control/Restricted width positional input/With wrapping                    
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 Raster bars                    
5 Remote agent/Agent interface                    
5 Solve a Rubik's Cube                    
5 Strassen's algorithm                    
5 Tamagotchi emulator                    
5 Waveform analysis/Doh ray me                    
4 Generalised floating point multiplication                  
4 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                  
4 OLE automation                  
4 Unicode polynomial equation                    
4 Using the Meetup.com API                  
4 Weather routing                    
4 WiktionaryDumps to words                    
3 Quadrat Special Primes                  
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