Rosetta Code/Count examples/Full list/Tier 4

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Revision as of 21:07, 23 May 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 Ring          ㉜ Common_Lisp   ㉝ JavaScript    ㉞ AutoHotkey    ㉟ F_Sharp      
    ㊱ Delphi        ㊲ ALGOL_68      ㊳ Clojure       ㊴ PureBasic     ㊵ AWK          
As of 2021-05-23T21:04:40Z :: Tasks: 1103 :: Draft Tasks:273 :: Total Tasks: 1376 :: Total Examples: 76271
Count Task
488 Hello world/Text
323 99 bottles of beer
316 100 doors
316 FizzBuzz
290 Fibonacci sequence
287 Factorial
276 Comments
268 A+B
261 Empty program
239 Function definition
229 Loops/Infinite
226 Reverse a string
225 Loops/While
223 Arrays
222 Ackermann function
206 Loops/For
201 Conditional structures  
198 Greatest common divisor
197 Arithmetic/Integer
197 Greatest element of a list
189 Array concatenation
187 Even or odd
185 Integer comparison
185 Repeat a string
184 Averages/Arithmetic mean
182 Increment a numerical string
178 Hello world/Graphical
173 Copy a string
172 Sieve of Eratosthenes
169 Boolean values
168 Binary digits
168 Loops/Downward for
168 String concatenation
166 Apply a callback to an array
166 Character codes
165 Towers of Hanoi
164 Array length
164 Loops/Do-while  
164 Loops/N plus one half
164 Palindrome detection
164 Sum and product of an array
163 Hello world/Newline omission
163 Loops/For with a specified step
163 String length
162 Integer sequence
162 Loops/Foreach
161 String case
161 Tokenize a string
160 Loops/Break  
160 Sum of a series
157 Rot-13
156 Dot product
155 Generic swap
155 Leap year
155 Sum of squares
154 Empty string
154 Hailstone sequence
153 Filter
153 Logical operations
150 Associative array/Creation
150 Quine  
149 Sort an integer array
148 Sorting algorithms/Bubble sort
146 Roman numerals/Encode
145 Execute a system command
145 Factors of an integer
144 Caesar cipher
143 Guess the number  
143 Loop over multiple arrays simultaneously
143 System time
142 Higher-order functions  
142 Remove duplicate elements
141 Determine if a string is numeric
141 Sorting algorithms/Quicksort  
141 User input/Text
140 File input/output
137 Bitwise operations
137 Day of the week
137 Luhn test of credit card numbers  
137 Primality by trial division
136 Hello world/Standard error
135 Command-line arguments
135 Read entire file
134 Create a file
134 Happy numbers
134 Stack  
134 Substring
134 Zero to the zero power
133 Loops/Continue
133 Mutual recursion
131 Pascal's triangle
131 Sleep
130 Generate lower case ASCII alphabet
129 ABC problem
129 Check that file exists
129 Least common multiple
129 Literals/String  
128 Date format
128 Flatten a list    
125 Ethiopian multiplication
125 Program termination
124 Binary search
124 Compound data type
124 Variables
123 Balanced brackets
123 Function composition  
123 Include a file  
123 Literals/Integer
122 Detect division by zero  
122 Formatted numeric output
121 Associative array/Iteration
121 Loops/Nested  
121 Mandelbrot set
121 Roman numerals/Decode
120 Averages/Root mean square
120 Count occurrences of a substring
120 Knuth shuffle
120 N-queens problem
119 Count in octal
119 Read a file line by line
119 Sorting algorithms/Insertion sort
118 Null object
117 Multiplication tables
117 Search a list
116 Anagrams
116 Guess the number/With feedback
116 Hash from two arrays  
116 Matrix transposition
116 Real constants and functions
115 Case-sensitivity of identifiers
115 Delete a file
115 File size
115 Identity matrix
115 Letter frequency
114 Averages/Median
114 Babbage problem  
114 Classes  
114 Find limit of recursion
114 Matrix multiplication  
114 Rename a file
113 Align columns  
113 Environment variables
113 Input loop
113 String matching
112 Pangram checker
112 Pick random element
112 Random numbers
111 HTTP
111 Haversine formula
111 Hostname  
111 Return multiple values  
110 Arithmetic/Complex    
110 Perfect numbers
109 Assertions  
109 Conway's Game of Life  
109 Look-and-say sequence
108 Accumulator factory      
108 Catalan numbers
108 Infinity    
108 Temperature conversion
107 Variadic function    
106 Arithmetic-geometric mean
106 Averages/Pythagorean means
106 Horner's rule for polynomial evaluation  
106 Levenshtein distance  
106 Permutations
106 Substring/Top and tail
105 Program name
105 Run-length encoding
105 Sierpinski triangle
105 String append
105 Strip a set of characters from a string
104 Anonymous recursion      
104 Evaluate binomial coefficients
104 Prime decomposition
104 Reverse words in a string  
104 Strip whitespace from a string/Top and tail
104 Zig-zag matrix  
103 Bulls and cows  
103 Comma quibbling  
103 Regular expressions
103 String interpolation (included)
102 Exceptions    
102 Nth root
102 Sorting algorithms/Merge sort    
102 Trigonometric functions  
101 Combinations
101 Ordered words
101 Queue/Definition  
99 Middle three digits  
99 Shell one-liner  
99 Short-circuit evaluation
99 Sorting algorithms/Selection sort
99 String prepend
98 24 game      
98 Call a function    
98 Power set
98 Sum multiples of 3 and 5
98 Vector products  
97 Arbitrary-precision integers (included)      
97 Create a two-dimensional array at runtime
97 Harshad or Niven series  
97 Range extraction
97 Sum digits of an integer
97 The Twelve Days of Christmas  
96 Interactive programming          
96 Range expansion
96 Y combinator        
95 Enumerations
95 N'th
95 Sierpinski carpet
95 Sorting algorithms/Gnome sort
94 Collections  
94 Execute Brain****  
94 Time a function      
94 Walk a directory/Non-recursively  
93 Digital root
93 Evolutionary algorithm
93 First-class functions      
92 Averages/Mode  
92 Create an HTML table
92 Exponentiation operator
92 Inheritance/Single      
92 MD5      
92 One-dimensional cellular automata    
92 Sequence of non-squares  
92 Sorting algorithms/Cocktail sort    
90 Cumulative standard deviation  
90 Dragon curve      
90 Forward difference
90 JSON        
90 Random number generator (included)  
90 Sort using a custom comparator  
90 Symmetric difference  
89 Averages/Simple moving average
89 Hello world/Newbie      
89 Josephus problem    
89 Sorting algorithms/Bogosort  
89 String comparison  
88 Entropy
88 Gray code  
88 Hamming numbers  
88 Langton's ant  
88 Monty Hall problem
87 Greatest subsequential sum
87 Number names
87 Price fraction
86 Abundant, deficient and perfect number classifications  
86 Amicable pairs  
86 CSV data manipulation
86 Five weekends
86 Hofstadter Q sequence  
86 Menu
86 Number reversal game    
86 Tree traversal    
85 Abstract type          
85 CSV to HTML translation    
85 Compare a list of strings  
85 Map range  
85 Sorting algorithms/Heapsort  
84 SEDOLs
83 Almost prime
83 Catamorphism    
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 Introspection    
82 Set    
82 Terminal control/Clear the screen      
82 URL decoding  
81 Box the compass  
81 Calculating the value of e    
81 Count in factors
81 Monte Carlo methods  
80 Hello world/Line printer  
80 Literals/Floating point          
80 Terminal control/Ringing the terminal bell    
80 Top rank per group    
79 Count the coins  
79 Find common directory path  
79 Jensen's Device      
79 Long multiplication  
79 Playing cards    
79 Roots of unity    
79 Show the epoch    
79 Singly-linked list/Traversal      
79 Sorting algorithms/Shell sort    
79 Spiral matrix  
79 Split a character string based on change of character  
79 Web scraping  
79 Word wrap    
78 Address of a variable          
78 Bitmap    
78 CRC-32    
78 Concurrent computing      
78 Date manipulation    
78 Find the last Sunday of each month  
78 Floyd's triangle  
78 Multifactorial    
78 Operator precedence  
78 Order two numerical lists  
78 Read a specific line from a file  
78 Repeat    
78 Sockets      
78 XML/Input    
77 Dynamic variable names      
77 Knapsack problem/0-1        
77 Linear congruential generator      
77 Proper divisors
77 Pythagorean triples  
77 Sorting algorithms/Counting sort      
77 Strip comments from a string
77 URL encoding    
76 Averages/Mean angle
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  
75 Kaprekar numbers    
75 Lucas-Lehmer test    
75 Man or boy test        
75 Modular inverse
75 Non-decimal radices/Output  
75 Phrase reversals    
75 Population count
75 Soundex
74 Anagrams/Deranged anagrams
74 Calendar    
74 List comprehensions      
74 Parsing/RPN calculator algorithm        
74 Pi    
74 Read a configuration file        
74 SHA-1      
74 Semordnilap  
74 Sorting algorithms/Comb sort      
74 Unicode variable names    
74 Write entire file  
73 Equilibrium index  
73 Fibonacci n-step number sequences
73 Gamma function
73 Hello world/Web server      
73 Multiple distinct objects    
73 Show ASCII table  
73 Sudoku  
72 Animation    
72 Empty directory  
72 Exceptions/Catch an exception thrown in a nested call        
72 Execute HQ9+    
72 Guess the number/With feedback (player)    
72 SHA-256  
72 Singly-linked list/Element definition    
72 Sort disjoint sublist      
72 Special characters        
72 Vigenère cipher    
72 Zeckendorf number representation    
71 AKS test for primes      
71 Convert seconds to compound duration  
71 Euler's sum of powers conjecture  
71 Longest common subsequence    
71 Rock-paper-scissors      
71 Stair-climbing puzzle      
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 IBAN    
70 Largest int from concatenated ints  
70 Old lady swallowed a fly            
70 Polymorphism    
70 Quaternion type      
70 Rep-string  
70 Sorting algorithms/Stooge sort      
70 Trabb Pardo–Knuth algorithm      
70 Write float arrays to a text file      
69 15 puzzle game        
69 Catalan numbers/Pascal's triangle    
69 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 Horizontal sundial calculations      
69 Magic squares of odd order    
69 Maze generation    
69 Numerical integration      
69 Self-describing numbers      
68 Euler method    
68 Extend your language          
68 Fractal tree      
68 Jump anywhere          
68 Named parameters        
68 Priority queue          
68 Text processing/Max licenses in use      
67 Benford's law  
67 Chinese remainder theorem        
67 Fast Fourier transform            
67 Fork          
67 Nested function        
67 Pernicious numbers      
67 Roots of a function    
67 Sorting algorithms/Pancake sort    
67 Special variables      
67 Unix/ls        
66 Amb    
66 Arithmetic/Rational        
66 Barnsley fern        
66 Morse code      
66 One of n lines in a file  
66 Remove lines from a file  
66 Runtime evaluation          
66 Sequence of primes by trial division    
66 Sort stability    
66 Strip control codes and extended characters from a string  
66 Thue-Morse      
66 Van der Corput sequence      
66 Variable size/Get        
65 Department numbers    
65 Documentation        
65 General FizzBuzz      
65 HTTPS      
65 Hofstadter-Conway $10,000 sequence  
65 Inheritance/Multiple        
65 Narcissistic decimal number    
65 Optional parameters      
65 Roots of a quadratic function        
64 Anti-primes      
64 Continued fraction        
64 Factors of a Mersenne number      
64 Reduced row echelon form          
64 XML/Output      
63 Angle difference between two bearings        
63 Exponentiation order          
63 Memory allocation        
63 Non-decimal radices/Input      
63 Singly-linked list/Element insertion      
63 Tic-tac-toe        
63 Undefined values        
63 Word frequency  
63 Write language name in 3D ASCII      
62 Animate a pendulum    
62 Cholesky decomposition        
62 Circles of given radius through two points        
62 Damm algorithm    
62 Globally replace text in several files    
62 Mouse position    
62 Plot coordinate pairs      
62 Probabilistic choice    
62 Runge-Kutta method      
62 Semiprime      
62 Sort three variables        
62 Stern-Brocot sequence    
61 100 prisoners        
61 Arithmetic evaluation      
61 Averages/Mean time of day        
61 Binary strings      
61 Get system command output          
61 Jewels and stones        
61 Modular exponentiation        
61 Sorting algorithms/Sleep sort          
60 24 game/Solve          
60 Best shuffle    
60 Draw a clock        
60 Knapsack problem/Continuous          
60 Miller–Rabin primality test    
60 Partial function application          
60 Test a function    
60 Truncatable primes      
60 Unicode strings          
60 Yin and yang        
59 9 billion names of God the integer          
59 Bitmap/Write a PPM file          
59 Cartesian product of two or more lists        
59 Dutch national flag problem        
59 Emirp primes  
59 Generator/Exponential          
59 Host introspection        
59 Huffman coding          
59 Knapsack problem/Unbounded        
59 User input/Graphical      
58 Add a variable to a class instance at runtime            
58 Brownian tree        
58 Compile-time calculation          
58 Extract file extension      
58 Hash join      
58 Knight's tour        
58 Odd word problem    
58 Sorting algorithms/Bead sort        
58 Subleq            
58 Two sum      
57 2048    
57 4-rings or 4-squares puzzle      
57 Abundant odd numbers    
57 CUSIP      
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 Longest common prefix          
57 Ludic numbers    
57 Mad Libs          
57 Matrix-exponentiation operator            
57 Multisplit      
57 Random number generator (device)            
57 Scope modifiers        
57 Sorting algorithms/Permutation sort          
57 Stem-and-leaf plot      
57 Terminal control/Coloured text          
57 Terminal control/Display an extended character          
57 Topological sort            
57 Truncate a file      
57 Van Eck sequence        
56 DNS query          
56 Dinesman's multiple-dwelling problem  
56 Discordian date        
56 Doubly-linked list/Element definition      
56 Fibonacci word  
56 Forest fire    
56 LZW compression          
56 Rosetta Code/Rank languages by popularity      
56 Singleton          
55 Base64 encode data          
55 Define a primitive data type          
55 Extreme floating point values          
55 Grayscale image          
55 Long year        
55 Modulinos          
55 Munching squares              
55 Pascal matrix generation      
55 Sierpinski triangle/Graphical              
55 Square but not cube    
55 Stack traces        
54 Draw a pixel          
54 Handle a signal        
54 Magic 8-ball    
54 Pointers and references          
54 Quickselect algorithm    
54 Runtime evaluation/In an environment        
54 Synchronous concurrency        
54 Terminal control/Cursor positioning          
54 Unbias a random generator        
54 Universal Turing machine            
54 Wireworld        
54 XML/XPath          
53 Base64 decode data            
53 Bernoulli numbers          
53 Convert decimal number to rational        
53 Determine if a string is collapsible    
53 Maximum triangle path sum      
53 Non-continuous subsequences      
53 Send email          
53 Statistics/Basic                
53 Ternary logic          
53 XML/DOM serialization          
52 Attractive numbers        
52 Call a function in a shared library            
52 Determine if a string has all the same characters  
52 Dining philosophers        
52 FASTA format      
52 First-class functions/Use numbers analogously            
52 Heronian triangles          
52 Inverted syntax              
52 Iterated digits squaring        
52 Keyboard input/Keypress check    
52 Longest common substring        
52 Longest increasing subsequence          
52 Loops/Increment loop index within loop body      
52 Polynomial regression                
52 Rate counter        
52 Seven-sided dice from five-sided dice      
52 Smith numbers    
52 Strip block comments      
52 Text processing/2        
52 Validate International Securities Identification Number          
52 Vector              
51 Chinese zodiac  
51 Copy stdin to stdout        
51 Farey sequence          
51 Gaussian elimination          
51 Holidays related to Easter          
51 McNuggets problem        
51 Move-to-front algorithm      
51 Pig the dice game        
51 Respond to an unknown method call            
51 Sattolo cycle            
51 Shoelace formula for polygonal area            
51 Tokenize a string with escaping          
50 Archimedean spiral      
50 Colour bars/Display        
50 Dijkstra's algorithm    
50 Find the intersection of two lines      
50 GUI component interaction        
50 ISBN13 check digit          
50 Make directory path      
50 Password generator        
50 Perfect shuffle      
50 Search a list of records          
50 Zebra puzzle            
49 Associative array/Merging  
49 Determinant and permanent              
49 Doubly-linked list/Traversal      
49 Fractran          
49 Jaro distance          
49 Kernighans large earthquake problem              
49 Last letter-first letter          
49 Metaprogramming            
49 RPG attributes generator          
49 Sort numbers lexicographically        
49 Text processing/1      
48 Chaos game          
48 Doubly-linked list/Element insertion      
48 Execute a Markov algorithm          
48 Extensible prime generator      
48 Greyscale bars/Display          
48 Hofstadter Figure-Figure sequences        
48 Longest string challenge        
48 Naming conventions          
48 Polymorphic copy          
48 Polynomial long division              
48 Stable marriage problem            
48 Visualize a tree        
47 Append a record to the end of a text file                
47 Cantor set          
47 Echo server      
47 History variables          
47 Kronecker product          
47 Narcissist            
47 Water collected between towers            
46 Active object          
46 Average loop length              
46 Bitmap/Flood fill              
46 Determine if a string has all unique characters  
46 Determine if only one instance is running          
46 Egyptian division      
46 OpenGL      
46 Set consolidation        
46 Ulam spiral (for primes)              
46 Verify distribution uniformity/Naive        
45 Bulls and cows/Player            
45 Element-wise operations            
45 Image noise          
45 Parsing/Shunting-yard algorithm          
45 Rosetta Code/Count examples          
45 Send an unknown method call              
45 Sorting algorithms/Radix sort              
45 Sparkline in unicode        
45 Taxicab numbers          
44 Atomic updates        
44 Bitmap/Read a PPM file            
44 Carmichael 3 strong pseudoprimes          
44 Doubly-linked list/Definition  
44 Elementary cellular automaton            
44 GUI/Maximum window dimensions            
44 Generate Chess960 starting position              
44 Nim game          
44 Problem of Apollonius              
44 Spinning rod animation/Text              
44 Subtractive generator            
44 Sum to 100    
44 Text between          
44 Truth table              
43 Currency        
43 Determine if a string is squeezable        
43 Fusc sequence        
43 Gapful numbers          
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 S-expressions            
43 Secure temporary file              
43 Twelve statements              
43 UTF-8 encode and decode          
43 Voronoi diagram          
42 Aliquot sequence classifications            
42 Calendar - for "REAL" programmers            
42 Deepcopy          
42 Digital root/Multiplicative digital root            
42 Fivenum                
42 Flipping bits game            
42 Hilbert curve            
42 Permutations by swapping            
42 Permutations/Derangements            
42 Sorting Algorithms/Circle Sort              
42 Speech synthesis            
42 Summarize and say sequence          
42 Table creation/Postal addresses          
42 Terminal control/Dimensions          
42 The Name Game            
41 Balanced ternary              
41 Bell numbers            
41 Bitmap/Midpoint circle algorithm            
41 Combinations and permutations                
41 Inverted index          
41 Parallel calculations        
41 Pascal's triangle/Puzzle          
41 Permutation test            
41 Remove vowels from a string      
41 Sort a list of object identifiers          
41 Sorting algorithms/Strand sort          
41 Start from a main routine        
41 Topswops                  
41 Two identical strings            
41 Variable size/Set                
40 Casting out nines            
40 Chowla numbers                
40 Color of a screen pixel      
40 Cramer's rule              
40 Euler's identity              
40 GUI enabling/disabling of controls            
40 Musical scale          
40 Primorial numbers          
40 Recaman's sequence            
40 Sailors, coconuts and a monkey problem            
40 Scope/Function names and labels              
40 Variable-length quantity                  
39 21 game          
39 Abbreviations, automatic            
39 Brace expansion              
39 Colour pinstripe/Display            
39 Create a file on magnetic tape              
39 Feigenbaum constant calculation              
39 Julia set          
39 Knuth's algorithm S              
39 MAC Vendor Lookup          
39 Magic squares of doubly even order              
39 Order disjoint list items              
39 Parametric polymorphism                
39 Parsing/RPN to infix conversion        
39 Permutations with repetitions          
39 Prime conspiracy                
39 Ray-casting algorithm            
39 Statistics/Normal distribution                  
38 Brazilian numbers            
38 Break OO privacy              
38 Constrained genericity                
38 Cuban primes          
38 Cycle detection                    
38 Days between dates              
38 Display a linear combination              
38 Floyd-Warshall algorithm                
38 Idiomatically determine all the lowercase and uppercase letters        
38 Kahan summation              
38 LU decomposition                
38 Metered concurrency                
38 Minesweeper game            
38 Multiple regression                
38 Pathological floating point problems          
38 Pythagorean quadruples            
38 QR decomposition                  
38 Ranking methods              
38 Read a file character by character/UTF8            
38 Substitution cipher                  
38 Sutherland-Hodgman polygon clipping                
38 Tau number        
38 Terminal control/Hiding the cursor            
38 Totient function                
38 Vampire number          
37 Abbreviations, easy            
37 Approximate equality                
37 Bioinformatics/base count          
37 File extension is in extensions list          
37 Find palindromic numbers in both binary and ternary bases            
37 Find the intersection of a line with a plane                  
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 Penney's game                
37 Rosetta Code/Find bare lang tags                  
37 Solve the no connection puzzle                
37 Sum of divisors          
37 Terminal control/Inverse video          
37 Test integerness                
36 Abbreviations, simple              
36 Bitwise IO          
36 Convex hull                
36 Egyptian fractions                
36 Events        
36 Fibonacci word/fractal            
36 Humble numbers          
36 Isqrt (integer square root) of X              
36 Largest number divisible by its digits            
36 Loops/With multiple ranges          
36 Maze solving          
36 Mertens function              
36 Numerical integration/Gauss-Legendre Quadrature              
36 Ordered partitions                
36 Pinstripe/Display              
36 Primality by Wilson's theorem                
36 RIPEMD-160              
36 Safe primes and unsafe primes            
36 Square-free integers                
36 Terminal control/Unicode output            
35 Arithmetic-geometric mean/Calculate Pi              
35 Bitmap/Bézier curves/Cubic            
35 Check output device is a terminal                  
35 Entropy/Narcissist                
35 Multiline shebang              
35 Parametrized SQL statement              
35 Pentagram              
35 RSA code            
34 Conjugate transpose                  
34 Mutex                
34 Palindrome dates      
34 Pattern matching              
34 Pythagoras tree            
34 Set puzzle                
34 Subset sum problem                  
34 Topic variable                
34 Words containing "the" substring          
34 Yellowstone sequence          
33 Bitcoin/address validation                
33 Cheryl's birthday              
33 Church numerals                
33 Continued fraction/Arithmetic/Construct from rational number              
33 Determine if two triangles overlap                
33 Executable library                
33 Factorions          
33 Four is magic      
33 Galton box animation              
33 Integer roots                  
33 Multi-dimensional array              
33 Multiplicative order                
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 Resistor mesh                    
33 Solve a Hidato puzzle                  
33 Sorting algorithms/Patience sort              
33 Straddling checkerboard          
33 Terminal control/Cursor movement                
33 Textonyms              
32 Bitmap/Bézier curves/Quadratic                  
32 Check input device is a terminal                
32 Decimal floating point number to binary                
32 Eban numbers                
32 Execute SNUSP            
32 Lah numbers                  
32 Rosetta Code/Find unimplemented tasks            
32 Sequence: smallest number with exactly n divisors        
32 Set of real numbers            
32 Type detection              
32 Use another language to call a function                
32 Write to Windows event log        
32 Zhang-Suen thinning algorithm                
32 Zumkeller numbers                
31 Apply a digital filter (direct form II transposed)                  
31 Bitmap/Histogram                
31 Check Machin-like formulas                  
31 Checkpoint synchronization                
31 Draw a rotating cube            
31 Faulhaber's formula                    
31 Faulhaber's triangle                
31 First class environments                  
31 First power of 2 that has leading decimal digits of 12              
31 Implicit type conversion              
31 Keyboard macros        
31 Modular arithmetic                  
31 Numeric error propagation              
31 Parallel brute force          
31 Perfect totient numbers            
31 Reflection/List properties                  
31 Simple database                  
31 Sorting algorithms/Cycle sort                  
31 Strong and weak primes              
31 Tau function            
31 URL parser              
31 Xiaolin Wu's line algorithm                
30 AVL tree                  
30 Arena storage pool                  
30 Bacon cipher                  
30 Chaocipher              
30 Chat server                
30 Compiler/lexical analyzer              
30 Deconvolution/1D                  
30 Dice game probabilities                    
30 Diversity prediction theorem                
30 Extra primes              
30 FTP                  
30 Gauss-Jordan matrix inversion                    
30 HTTPS/Authenticated              
30 Koch curve              
30 Length of an arc between two angles            
30 Mersenne primes                
30 Mian-Chowla sequence            
30 Pragmatic directives                
30 Rosetta Code/Fix code tags          
30 Sequence: smallest number greater than previous term with exactly n divisors          
30 State name puzzle                  
30 Stream merge                
30 Terminal control/Preserve screen                
30 Update a configuration file                
30 Verify distribution uniformity/Chi-squared test                    
30 Weird numbers                  
30 Window creation/X11                
30 Word break problem              
29 Death Star              
29 Decision tables            
29 Find first and last set bit of a long integer              
29 Formal power series                
29 Jacobi symbol                
29 Longest common suffix        
29 Memory layout of a data structure                  
29 Sexy primes          
29 Smarandache prime-digital sequence            
29 Sum and product puzzle              
29 Sum of the digits of n is substring of n            
29 Super-d numbers                
29 Superellipse                  
29 World Cup group stage                  
28 ABC words            
28 Active Directory/Connect                
28 Burrows–Wheeler transform                    
28 Chebyshev coefficients                    
28 Chemical calculator                  
28 Coprimes              
28 Find largest left truncatable prime in a given base                  
28 Honeycombs                
28 Machine code              
28 Natural sorting                  
28 Numbers divisible by their individual digits, but not by the product of their digits.              
28 Peano curve                  
28 Pell's equation                
28 Perlin noise              
28 Polyspiral                
28 Product of divisors            
28 Ramsey's theorem                
28 Same fringe                  
28 The ISAAC Cipher                
28 Thiele's interpolation formula                
28 Unprimeable numbers                
28 Word wheel            
27 Angles (geometric), normalization and conversion              
27 Birthday problem                
27 Card shuffles                    
27 Create an object at a given address              
27 Cut a rectangle                
27 First perfect square in base n with n unique digits              
27 Go Fish                
27 Law of cosines - triples              
27 Nautical bell              
27 Nonoblock                
27 Palindromic gapful numbers                
27 Paraffins                    
27 Range consolidation              
27 Reflection/List methods              
27 Safe addition                  
27 Solve a Holy Knight's tour                
27 Strange numbers              
27 Successive prime differences            
27 Table creation                
27 Tonelli-Shanks algorithm                  
26 A* search algorithm                
26 Distributed programming                
26 Fairshare between two and more                
26 Fermat numbers                  
26 Finite state machine                
26 Fraction reduction                  
26 Image convolution                
26 Kronecker product based fractals                  
26 Magic squares of singly even order                    
26 Minimum positive multiple in base 10 using only 0 and 1              
26 Monads/Maybe monad          
26 Möbius function            
26 N-smooth numbers                  
26 Numbers with prime digits whose sum is 13            
26 Plasma effect              
26 Ramer-Douglas-Peucker line simplification                  
26 Sequence of primorial primes                
26 Stirling numbers of the first kind                
26 Stirling numbers of the second kind                  
26 Strange plus numbers            
26 Teacup rim text            
25 Abelian sandpile model                
25 Alternade words              
25 Audio alarm          
25 Bin given limits                  
25 Cipolla's algorithm                  
25 Color wheel                  
25 Cousin primes            
25 Elliptic curve arithmetic                    
25 Function frequency                
25 Generate random chess position                    
25 Hough transform                    
25 Idiomatically determine all the characters that can be used for symbols                
25 Intersecting number wheels              
25 Linux CPU utilization                  
25 Mayan numerals              
25 Parse an IP Address                  
25 Pierpont primes              
25 Play recorded sounds            
25 Primes which sum of digits is 25        
25 RCRPG            
25 Random Latin squares              
25 Shift list elements to left by 3      
25 Sierpinski pentagon                  
25 Sorting algorithms/Cocktail sort with shifting bounds                  
25 Welch's t-test                    
25 Yahoo! search interface                  
24 Base58Check encoding                    
24 Circular primes                
24 Find words with alternating vowels and consonants          
24 Fixed length records                
24 Hunt the Wumpus              
24 K-means++ clustering                  
24 List rooted trees                
24 Make a backup file              
24 Mind boggling card trick              
24 Next highest int from digits            
24 Numbers with equal rises and falls              
24 Percolation/Mean run density                    
24 Permutations/Rank of a permutation                  
24 Pseudo-random numbers/PCG32              
24 Shortest common supersequence                  
24 Simulate input/Keyboard              
24 Superpermutation minimisation                
24 Total circles area                    
24 Video display modes                  
23 Active Directory/Search for a user                    
23 Common sorted list          
23 Create an object/Native demonstration                
23 De Bruijn sequences                    
23 Deming's Funnel                    
23 Elementary cellular automaton/Random Number Generator                  
23 Find words which contains more than 3 e vowels            
23 Kolakoski sequence                    
23 Long literals, with continuations              
23 Lucky and even lucky numbers                
23 Main step of GOST 28147-89                  
23 Markov chain text generator                  
23 Numbers which binary and ternary digit sum are prime              
23 Playfair cipher                    
23 Pseudo-random numbers/Xorshift star              
23 Record sound                
23 Reverse the gender of a string                  
23 SOAP            
23 Solve a Hopido puzzle                  
23 Spelling of ordinal numbers              
23 Strange unique prime triplets            
22 ASCII art diagram converter                  
22 Addition chains                    
22 Additive primes              
22 Assertions in design by contract                    
22 Bioinformatics/Sequence mutation              
22 Change e letters to i in words          
22 Commatizing numbers                
22 Find duplicate files                  
22 Increasing gaps between consecutive Niven numbers                  
22 Kosaraju                    
22 Levenshtein distance/Alignment                    
22 Magnanimous numbers              
22 Mastermind              
22 Matrix chain multiplication                    
22 Monads/List monad          
22 Nested templated data                  
22 Nice primes              
22 Padovan sequence            
22 Pig the dice game/Player                
22 Self numbers              
22 Snake and Ladder                
22 Sokoban                  
22 Solve a Numbrix puzzle                  
22 Sum of first n cubes              
22 UPC              
22 Vigenère cipher/Cryptanalysis                    
22 Vogel's approximation method                    
21 Bitcoin/public point to address                
21 Data Encryption Standard                    
21 Eertree                  
21 Esthetic numbers                
21 Find prime numbers of the form n*n*n+2            
21 Joystick position              
21 K-d tree                  
21 Median filter                    
21 Native shebang                  
21 Numeric separator syntax                
21 Orbital elements                    
21 Reflection/Get source              
21 Sum data type                
21 Window management              
20 15 puzzle solver                
20 Arithmetic coding/As a generalized change of radix                  
20 Bilinear interpolation                    
20 Changeable words                
20 Cistercian numerals                
20 Exponentiation with infix operators in (or operating on) the base                
20 File size distribution                  
20 Frobenius numbers              
20 Index finite lists of positive integers                    
20 Montgomery reduction                    
20 N-body problem                    
20 P-value correction                    
20 Pancake numbers              
20 Partition function P                
20 Polynomial synthetic division                  
20 Sunflower fractal                
20 Ulam numbers                
19 Abelian sandpile model/Identity                  
19 Code segment unload                    
19 Color quantization                
19 Common list elements            
19 Elementary cellular automaton/Infinite length                    
19 Knuth's power tree                  
19 Latin Squares in reduced form                  
19 Line circle intersection                    
19 Metallic ratios                  
19 Monads/Writer monad                
19 Names to numbers                
19 Odd words              
19 Perceptron                
19 Percolation/Site percolation                    
19 Primes - allocate descendants to their ancestors                  
19 Print debugging statement                  
19 Rare numbers                
19 Readline interface                    
19 SQL-based authentication                    
19 Selective file copy                
19 Show the (decimal) value of a number of 1s appended with a 3, then squared            
19 Sierpinski arrowhead curve                  
19 Simulate input/Mouse            
19 Transportation problem                    
19 Untrusted environment                    
19 Word search                    
19 Zeckendorf arithmetic                    
18 Canonicalize CIDR                  
18 Compiler/code generator                
18 Draw pixel 2              
18 EKG sequence convergence                  
18 Find URI in text                  
18 Imaginary base numbers                    
18 Just in time processing on a character stream                    
18 Merge and aggregate datasets            
18 Nimber arithmetic                    
18 Nonogram solver                
18 Solve triangle solitare puzzle                    
18 Triplet of three numbers              
18 Twin primes          
17 Biorhythms                  
17 Bitmap/Read an image through a pipe                  
17 Calkin-Wilf sequence                  
17 Compiler/virtual machine interpreter                  
17 Find if a point is within a triangle                    
17 Find words which contains all the vowels          
17 Find words which first and last three letters are equals            
17 HTTPS/Client-authenticated                    
17 Matrix digital rain                  
17 Most frequent k chars distance                
17 NYSIIS                    
17 Padovan n-step number sequences                
17 Particle swarm optimization                  
17 Percolation/Bond percolation                    
17 Percolation/Mean cluster density                    
17 Piprimes            
17 Prime words              
17 Proof                    
17 Retrieve and search chat history                  
17 Separate the house number from the street name                    
17 Sequence: nth number with exactly n divisors                  
17 Suffix tree                  
17 Summarize primes              
17 Tarjan                    
17 Terminal control/Positional read                
16 Aspect oriented programming              
16 Bitmap/PPM conversion through a pipe                    
16 Chernick's Carmichael numbers                  
16 Cyclotomic polynomial                    
16 Erdős-primes                
16 Find prime n for that reversed n is also prime            
16 Free polyominoes enumeration                    
16 Geometric algebra                  
16 Getting the number of decimals              
16 Neighbour primes              
16 Next special primes              
16 Peaceful chess queen armies                    
16 Prime triplets              
16 Pseudo-random numbers/Combined recursive generator MRG32k3a                    
16 Pseudo-random numbers/Splitmix64                  
16 Ramanujan's constant                    
16 Self-hosting compiler                  
16 Snake              
16 Vibrating rectangles                
15 Banker's algorithm                    
15 Compare sorting algorithms' performance                  
15 Compiler/syntax analyzer                  
15 Four is the number of letters in the ...                    
15 Functional coverage tree                  
15 Logistic curve fitting in epidemiology                    
15 Numerical integration/Adaptive Simpson's method                    
15 Odd squarefree semiprimes              
15 OpenWebNet password                
15 Practical numbers                  
15 Primes with digits in nondecreasing order            
15 Print itself                  
15 Rendezvous                
15 Singly-linked list/Element removal                  
15 Smallest power of 6 whose decimal expansion contains n              
15 Square root by hand                  
15 Words from neighbour ones            
14 Compiler/AST interpreter                    
14 Coprime triplets            
14 Deconvolution/2D+                    
14 Factorial base numbers indexing permutations of a collection                  
14 Find words which contains most consonants              
14 Generalised floating point addition                  
14 Gradient descent                  
14 Jaro-Winkler distance                
14 Permutations with some identical elements                    
14 SHA-256 Merkle tree                  
14 Topological sort/Extracted top item                    
14 XML validation                  
13 Checksumcolor                  
13 Consecutive Primes With Ascending Or Descending Differences                
13 Continued fraction/Arithmetic/G(matrix ng, continued fraction n)                    
13 Find first missing positive            
13 Palindromic primes                
13 Pisano period                    
13 Quadrat Special Primes              
13 Simulated annealing                    
13 Sine wave                
13 Sleeping Beauty problem                  
13 Substring primes              
12 Almkvist-Giullera formula for pi                    
12 Audio frequency generator                  
12 Canny edge detector                    
12 French Republican calendar                  
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 Modified random distribution                    
12 Order by pair comparisons                  
12 Railway circuit                    
12 Run as a daemon or service                    
12 Safe mode                  
12 Sierpinski curve                  
12 Smallest numbers              
12 Smallest square that begins with n                
12 Sorting algorithms/Tree sort on a linked list                    
12 Special factorials                    
12 Tetris                  
12 Tree from nesting levels                    
12 Two bullet roulette                    
12 Unique characters                
12 Unique characters in each string              
12 Untouchable numbers                
12 VList                    
12 XXXX redacted                    
11 Bioinformatics/Subsequence                  
11 Catmull–Clark subdivision surface                    
11 Combinations with repetitions/Square digit chain                    
11 Cubic Special Primes                
11 Execute CopyPasta Language                    
11 Geohash                  
11 Minkowski question-mark function                    
11 One-time pad                    
11 Pentomino tiling                    
11 Resistance calculator                    
11 Sierpinski square curve                    
11 Spoof game                  
11 Suffixation of decimal numbers                    
11 Text completion                  
11 Tree datastructures                    
11 Unit testing                    
11 Using a speech engine to highlight words                
10 Air mass                    
10 Colour pinstripe/Printer                    
10 Display an outline as a nested table                  
10 External sort                    
10 Faces from a mesh                    
10 Non-transitive dice                  
10 Numerical and alphabetical suffixes                    
10 Penrose tiling                    
10 Pinstripe/Printer                    
10 Powerful numbers                    
10 Rosetta Code/Rank languages by number of users                    
10 Three word location                  
10 Time-based one-time password algorithm                    
9 Curve that touches three points                  
9 Fibonacci matrix-exponentiation                    
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 Sort an outline at every level                  
9 Special Divisors                
9 Square Form Factorization                    
9 Starting a web browser                    
9 Text to HTML                    
9 User defined pipe and redirection operators                  
9 War card game                    
8 16 puzzle game                
8 Brace expansion using ranges                  
8 Compiler/Verifying syntax                    
8 Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)                    
8 Count the coins/0-1                    
8 Elliptic Curve Digital Signature Algorithm                    
8 Fibonacci heap                    
8 Multidimensional Newton-Raphson method                    
8 Robots                  
7 Addition-chain exponentiation                    
7 Bioinformatics/global alignment                    
7 Distinct Palindromes Within Decimal Numbers                    
7 Doubly-linked list/Element removal                    
7 Mayan calendar                    
7 OpenGL/Utah Teapot                    
7 P-Adic numbers, basic                    
7 Random sentence from book                  
7 Recursive descent parser generator                    
7 URL shortener                  
6 Audio overlap loop                
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 Tamagotchi emulator                    
6 Terminal control/Restricted width positional input/No wrapping                  
6 Terminal control/Restricted width positional input/With wrapping                  
5 Black Box                  
5 Boids                    
5 Chess player                    
5 Discrete Fourier transform                    
5 Hexapawn                  
5 Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique                  
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 Waveform analysis/Doh ray me                    
5 WiktionaryDumps to words                    
4 Generalised floating point multiplication                  
4 OLE automation                  
4 Solving coin problems                    
4 Unicode polynomial equation                    
4 Using the Meetup.com API                  
4 Weather routing                    
3 Blackjack strategy                    
3 Rosetta Code/List authors of task descriptions                    
3 Ukkonen’s suffix tree construction                    
3 Vidir                    
3 Waveform analysis/Top and tail                    
2 15 puzzle game in 3D                  
2 CLI-based maze-game                    
2 IRC gateway