Rosetta Code/Count examples/Full list

Full output for the Rosetta Code/Count examples#Raku task. Updated periodically.

This is something of a experiment. The languages have their completed task entries marked with a circled digit in the table so you can sort on the language to see which tasks have been done. Hold down control and click on several columns to do secondary, tertiary, etc. sorts.

Languages that omit a certain task have an uppercase O filled in for that task.

Ideally it would be nice to be able to generate the table on demand for any language but it is fairly intensive to generate. Once a week is ok, on demand would be unsustainable.

More than about 10 languages per page gets unwieldy and difficult to navigate. Generate reports for the top N languages in groups of 10. (N == 40 for now.)

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

Top tier

Second tier

Third tier

Fourth tier

First ten programming languages by number of task examples completed:
    ① Phix          ② Julia         ③ Go            ④ Wren          ⑤ Raku         
    ⑥ Nim           ⑦ Perl          ⑧ Python        ⑨ C             ⑩ REXX         

As of 2021-11-14T21:14:32Z :: Tasks: 1142 :: Draft Tasks:325 :: Total Tasks: 1467 :: Total Examples: 81249

Count	Task	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
506	Hello world/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
334	99 bottles of beer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
327	FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
321	100 doors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
297	Fibonacci sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
291	Factorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
279	Comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
271	A+B	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
264	Empty program	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
243	Function definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
236	Loops/Infinite	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
233	Arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
230	Loops/While	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
229	Ackermann function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
229	Reverse a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
215	Loops/For	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
209	Conditional structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
205	Arithmetic/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
204	Greatest common divisor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
199	Greatest element of a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
196	Array concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
194	Even or odd	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
189	Averages/Arithmetic mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
187	Integer comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
186	Repeat a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
183	Increment a numerical string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
180	Hello world/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Copy a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Sieve of Eratosthenes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
175	Boolean values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
173	Array length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
172	Loops/Downward for	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Apply a callback to an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Binary digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Character codes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Towers of Hanoi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
168	Integer sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
168	String concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Loops/Do-while	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Loops/For with a specified step	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Rot-13	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Sum and product of an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	Hello world/Newline omission	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	Loops/Foreach	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	Loops/N plus one half	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	Palindrome detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	String length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
163	Tokenize a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
162	Loops/Break	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	Empty string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	String case	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	Sum of a series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
160	Generic swap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
159	Quine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Dot product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Leap year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Sum of squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Hailstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Logical operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
154	Filter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
152	Associative array/Creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
152	Sort an integer array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
151	Sorting algorithms/Bubble sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Roman numerals/Encode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
149	Factors of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
148	Caesar cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
147	Execute a system command	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
146	Loop over multiple arrays simultaneously	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
146	Remove duplicate elements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Higher-order functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	Determine if a string is numeric	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	Guess the number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	System time	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
143	Stack	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
142	Sorting algorithms/Quicksort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
141	Bitwise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
141	User input/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	File input/output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	Luhn test of credit card numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	Primality by trial division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
139	Hello world/Standard error	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
137	Day of the week	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
137	Happy numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Generate lower case ASCII alphabet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Loops/Continue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Mutual recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Read entire file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Zero to the zero power	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Create a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
133	Check that file exists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Least common multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Sleep	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	ABC problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Literals/String	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Flatten a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Balanced brackets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Date format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
128	Ethiopian multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Program termination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Include a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Literals/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Compound data type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Function composition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Binary search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Count in octal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Detect division by zero	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Formatted numeric output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Knuth shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Loops/Nested	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Mandelbrot set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Associative array/Iteration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Averages/Root mean square	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Count occurrences of a substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Roman numerals/Decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	N-queens problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	Sorting algorithms/Insertion sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Case-sensitivity of identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Haversine formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Null object	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Pick random element	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Read a file line by line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Identity matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Matrix multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Matrix transposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Multiplication tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Averages/Median	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Guess the number/With feedback	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Real constants and functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Search a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Align columns	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Assertions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Classes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	O
116	File size	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Hash from two arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Letter frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Return multiple values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	String matching	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Babbage problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Delete a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Environment variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Find limit of recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Perfect numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	HTTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Look-and-say sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Rename a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Arithmetic/Complex	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Conway's Game of Life	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Input loop	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Pangram checker	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Random numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	Catalan numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	Hostname	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Infinity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Sierpinski triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Accumulator factory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Arithmetic-geometric mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Evaluate binomial coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Levenshtein distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Reverse words in a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	String append	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Strip a set of characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Temperature conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Averages/Pythagorean means	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Horner's rule for polynomial evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Run-length encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Substring/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Variadic function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Anonymous recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Program name	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Zig-zag matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Comma quibbling	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Harshad or Niven series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Prime decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Strip whitespace from a string/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Bulls and cows	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Nth root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Regular expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Sorting algorithms/Merge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	String interpolation (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Call a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Exceptions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Sum multiples of 3 and 5	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Trigonometric functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Combinations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Queue/Definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Sorting algorithms/Selection sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	The Twelve Days of Christmas	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Ordered words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Create a two-dimensional array at runtime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Middle three digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	N'th	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Power set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Shell one-liner	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Short-circuit evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Sum digits of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Vector products	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	24 game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Arbitrary-precision integers (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Sierpinski carpet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	String prepend	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Enumerations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Interactive programming	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
97	Range extraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Sorting algorithms/Gnome sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Walk a directory/Non-recursively	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Y combinator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Abundant, deficient and perfect number classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Collections	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Execute Brain****	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Range expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	First-class functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Sorting algorithms/Cocktail sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Averages/Mode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Create an HTML table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Evolutionary algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Hello world/Newbie	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Sequence of non-squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Time a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Dragon curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	One-dimensional cellular automata	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Random number generator (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Symmetric difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Hofstadter Q sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Inheritance/Single	①	②	③	④	⑤	⑥	⑦	⑧	⑨
92	MD5	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Sort using a custom comparator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Amicable pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Cumulative standard deviation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Forward difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Number names	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Sorting algorithms/Bogosort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Averages/Simple moving average	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	JSON	①	②	③	④	⑤	⑥	⑦	⑧	⑨
90	Langton's ant	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Monty Hall problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Entropy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Gray code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Hamming numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Josephus problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Price fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	String comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Calculating the value of e	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Catamorphism	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Map range	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Number reversal game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Simple windowed application	①	②	③	④	⑤	⑥	⑦	⑧	⑨
88	Tree traversal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Abstract type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Compare a list of strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Five weekends	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Greatest subsequential sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Last Friday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Sorting algorithms/Heapsort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Almost prime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	CSV data manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Floyd's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Menu	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	CSV to HTML translation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Non-decimal radices/Convert	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Queue/Usage	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Sort an array of composite structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Terminal control/Clear the screen	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Walk a directory/Recursively	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Address of a variable	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Closures/Value capture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Count in factors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	SEDOLs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Window creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
83	Find the last Sunday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Monte Carlo methods	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Order two numerical lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	URL decoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Bitmap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	File modification time	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
82	Hello world/Line printer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Repeat	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Terminal control/Ringing the terminal bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Top rank per group	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Word wrap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Box the compass	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Here document	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
81	Operator precedence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Read a specific line from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Show ASCII table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Sorting algorithms/Shell sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Split a character string based on change of character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Web scraping	①	②	③	④	⑤	⑥	⑦	⑧	⑨
80	Anti-primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	CRC-32	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Literals/Floating point	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Long multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Lucas-Lehmer test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Munchausen numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Playing cards	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Roots of unity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Sockets	①	②	③	④	⑤	⑥	⑦	⑧	⑨
79	Concurrent computing	①	②	③	④	⑤	⑥	⑦	⑧	⑨
79	Count the coins	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Dynamic variable names	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
79	Find common directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Jensen's Device	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Population count	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Pythagorean triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Show the epoch	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Singly-linked list/Traversal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Sorting algorithms/Counting sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Spiral matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	XML/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Date manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Keyboard input/Obtain a Y or N response	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Linear congruential generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Multifactorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Soundex	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	URL encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Call an object method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	O
77	Find the missing permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Kaprekar numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Knapsack problem/0-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Modular inverse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Proper divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Semordnilap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Strip comments from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Averages/Mean angle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Empty directory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Flow-control structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Phrase reversals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Sorting algorithms/Comb sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Sudoku	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Unicode variable names	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Anagrams/Deranged anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Calendar	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Equilibrium index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Hello world/Web server	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Man or boy test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Non-decimal radices/Output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	SHA-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨
75	Sort disjoint sublist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Special characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Take notes on the command line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Vigenère cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	AKS test for primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Currying	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Enforced immutability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Execute HQ9+	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Fibonacci n-step number sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Gamma function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	List comprehensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Multiple distinct objects	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Parsing/RPN calculator algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Read a configuration file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Rock-paper-scissors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Write entire file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Combinations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Euler's sum of powers conjecture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Exceptions/Catch an exception thrown in a nested call	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Guess the number/With feedback (player)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	SHA-256	①	②	③	④	⑤	⑥	⑦	⑧	⑨
73	Singly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Stair-climbing puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	15 puzzle game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Convert seconds to compound duration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Department numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Extend your language	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Four bit adder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Fractal tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
72	Old lady swallowed a fly	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Quaternion type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Rep-string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Thue-Morse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Zeckendorf number representation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Bitmap/Bresenham's line algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Call a foreign-language function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Horizontal sundial calculations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Jump anywhere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Longest common subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Polymorphism	①	②	③	④	⑤	⑥	⑦	⑧	⑨
71	Square but not cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Trabb Pardo–Knuth algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Arithmetic/Rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Catalan numbers/Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Closest-pair problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Draw a sphere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Fork	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	IBAN	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Largest int from concatenated ints	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Named parameters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Nested function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Numerical integration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Pernicious numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Priority queue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Self-describing numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Sorting algorithms/Stooge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Write float arrays to a text file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Benford's law	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Constrained random points on a circle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Magic squares of odd order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Maze generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Sort three variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Sorting algorithms/Pancake sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Text processing/Max licenses in use	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Van der Corput sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	100 prisoners	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Angle difference between two bearings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Barnsley fern	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Euler method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Runtime evaluation	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
68	Sequence of primes by trial division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Special variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Amb	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Chinese remainder theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Fast Fourier transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	General FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Hofstadter-Conway $10,000 sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Morse code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Narcissistic decimal number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Remove lines from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Roots of a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Sort stability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Strip control codes and extended characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Unix/ls	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Yin and yang	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Attractive numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Circles of given radius through two points	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Documentation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	HTTPS	①	②	③	④	⑤	⑥	⑦	⑧	⑨
66	Inheritance/Multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨
66	Jewels and stones	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	One of n lines in a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Optional parameters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Variable size/Get	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Continued fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Damm algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Factors of a Mersenne number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Get system command output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Memory allocation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Modular exponentiation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Roots of a quadratic function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Tic-tac-toe	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Write language name in 3D ASCII	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	XML/Output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Animate a pendulum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Cholesky decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Exponentiation order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Host introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Plot coordinate pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Reduced row echelon form	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Semiprime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Singly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Stern-Brocot sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Undefined values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Word frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Best shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Binary strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Globally replace text in several files	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Non-decimal radices/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Probabilistic choice	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Van Eck sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	24 game/Solve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Abundant odd numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Arithmetic evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Emirp primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Extract file extension	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Gapful numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Generator/Exponential	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Integer overflow	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Mouse position	①	②	③	④	⑤	⑥	⑦	⑧	⑨
62	Runge-Kutta method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Sorting algorithms/Sleep sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Test a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Truncatable primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Two sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Averages/Mean time of day	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Bitmap/Write a PPM file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	CUSIP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Cartesian product of two or more lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Compile-time calculation	①	②	③	④	⑤	⑥	⑦	O	⑨	⑩
61	Draw a clock	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Partial function application	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Terminal control/Display an extended character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	User input/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	2048	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	4-rings or 4-squares puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	9 billion names of God the integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Add a variable to a class instance at runtime	①	②	③	④	⑤	⑥	⑦	⑧	O
60	Dutch national flag problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Huffman coding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	ISBN13 check digit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Knapsack problem/Continuous	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Knapsack problem/Unbounded	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Long year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Longest common prefix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Magic 8-ball	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Miller–Rabin primality test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Sorting algorithms/Bead sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Subleq	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Unicode strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Brownian tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Determine if a string has all the same characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	JortSort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Knight's tour	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Left factorials	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Leonardo numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Random number generator (device)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Deal cards for FreeCell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Define a primitive data type	①	②	③	④	⑤	⑥	⑦	⑧	O
58	Doubly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Draw a cuboid	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Hash join	①	②	③	④	⑤	⑥	⑦	⑧		⑩
58	I before E except after C	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Ludic numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Mad Libs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Matrix-exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
58	Multisplit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Odd word problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Scope modifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Stem-and-leaf plot	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Ternary logic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Unbias a random generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Base64 encode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Chinese zodiac	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Convert decimal number to rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Delegates	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Determine if a string is collapsible	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Dinesman's multiple-dwelling problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Discordian date	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Fibonacci word	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Grayscale image	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	LZW compression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Pointers and references	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Sierpinski triangle/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Singleton	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Sorting algorithms/Permutation sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Terminal control/Coloured text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Terminal control/Cursor positioning	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Topological sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Truncate a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Call a function in a shared library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	DNS query	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
56	Dijkstra's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Extreme floating point values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Forest fire	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	McNuggets problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Modulinos	①	②	③	④	⑤		⑦	⑧	⑨	⑩
56	Pascal matrix generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Quickselect algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Rosetta Code/Rank languages by popularity	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
56	Runtime evaluation/In an environment	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
56	Stack traces	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Base64 decode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨
55	Bernoulli numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Draw a pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	FASTA format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Iterated digits squaring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Kernighans large earthquake problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Keyboard input/Keypress check	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Munching squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Perfect shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Universal Turing machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Validate International Securities Identification Number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	XML/XPath	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Archimedean spiral	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Handle a signal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Inverted syntax	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Longest common substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Loops/Increment loop index within loop body	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Non-continuous subsequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Seven-sided dice from five-sided dice	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Smith numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Statistics/Basic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Synchronous concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨
54	Vector	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Wireworld	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	XML/DOM serialization	①	②	③	④	⑤	⑥	⑦	⑧	⑨
53	Copy stdin to stdout	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Dining philosophers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	First-class functions/Use numbers analogously	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
53	Heronian triangles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Maximum triangle path sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Polynomial regression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Sattolo cycle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Send email	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
53	Shoelace formula for polygonal area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Sort numbers lexicographically	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Strip block comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Text processing/2	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Tokenize a string with escaping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Associative array/Merging	①	②	③	④	⑤	⑥	⑦	⑧		⑩
52	Determinant and permanent	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Gaussian elimination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Holidays related to Easter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Longest increasing subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Move-to-front algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Naming conventions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Password generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Pig the dice game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Rate counter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Search a list of records	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Cantor set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Chaos game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Colour bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Determine if a string has all unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Farey sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Find the intersection of two lines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Fractran	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	GUI component interaction	①	②	③	④	⑤	⑥	⑦	⑧	⑨
51	Longest string challenge	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Make directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	RPG attributes generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Remove vowels from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Respond to an unknown method call	①	②	③	④	⑤	⑥	⑦	⑧	O
51	Two identical strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Additive primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Doubly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Egyptian division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Jaro similarity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Metaprogramming	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Nim game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Stable marriage problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Text processing/1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Zebra puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Days between dates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Doubly-linked list/Traversal	①	②	③	④	⑤	⑥		⑧	⑨	⑩
49	Echo server	①	②	③		⑤	⑥	⑦	⑧	⑨
49	Execute a Markov algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Extensible prime generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Fusc sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Greyscale bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
49	Hofstadter Figure-Figure sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Kronecker product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Last letter-first letter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Primality by Wilson's theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Sum of first n cubes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Water collected between towers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Append a record to the end of a text file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Bell numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	History variables	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
48	Largest proper divisor of n	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	OpenGL	①	②	③	④	⑤	⑥	⑦	⑧	⑨
48	Polymorphic copy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Polynomial long division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Recaman's sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Sparkline in unicode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Taxicab numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Verify distribution uniformity/Naive	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Visualize a tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Average loop length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Bitmap/Flood fill	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Determine if a string is squeezable	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Determine if only one instance is running	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Elementary cellular automaton	①	②	③	④	⑤	⑥	⑦	⑧	⑨
47	Image noise	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Problem of Apollonius	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Set consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Sum of divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Tau number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Ulam spiral (for primes)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Active object	①	②	③	④	⑤	⑥	⑦	⑧	⑨
46	Bitmap/Read a PPM file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Currency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Doubly-linked list/Definition	①	②	③	④	⑤	⑥		⑧	⑨	⑩
46	Element-wise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Generate Chess960 starting position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Parsing/Shunting-yard algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Send an unknown method call	①	②	③	④	⑤	O	⑦	⑧	O
46	Sorting algorithms/Radix sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Start from a main routine	①	②	③	④	⑤	⑥	⑦	O	⑨	⑩
46	Sum to 100	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Text between	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Abbreviations, automatic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Bulls and cows/Player	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Carmichael 3 strong pseudoprimes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Fivenum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Flipping bits game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Rosetta Code/Count examples	①	②	③		⑤	⑥	⑦	⑧
45	Secure temporary file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Speech synthesis	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Spinning rod animation/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Subtractive generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Terminal control/Dimensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	The Name Game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Truth table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Atomic updates	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Chowla numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Deepcopy	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Digital root/Multiplicative digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	GUI/Maximum window dimensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Hickerson series of almost integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Hilbert curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Isqrt (integer square root) of X	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Keyboard input/Flush the keyboard buffer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Loops/With multiple ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Percentage difference between images	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Perfect totient numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Ranking methods	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Sorting Algorithms/Circle Sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Twelve statements	①	②	③	④	⑤	⑥	⑦	⑧		⑩
44	UTF-8 encode and decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Words containing "the" substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Aliquot sequence classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Balanced ternary	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Bitmap/Midpoint circle algorithm	①	②	③	④	⑤	⑥		⑧	⑨	⑩
43	Combinations and permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Inverted index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Knapsack problem/Bounded	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	MD5/Implementation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Mertens function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Musical scale	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Permutations by swapping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Permutations/Derangements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	S-expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Sailors, coconuts and a monkey problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Sort a list of object identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Summarize and say sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Table creation/Postal addresses	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Totient function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Voronoi diagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Brazilian numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Calendar - for "REAL" programmers	①	②	③	④	⑤	⑥	⑦	O	⑨	⑩
42	Casting out nines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Color of a screen pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Coprimes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Cycle detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Euler's identity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Idiomatically determine all the lowercase and uppercase letters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Loops/Wrong ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Parallel calculations	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Pascal's triangle/Puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Permutations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	21 game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Abbreviations, easy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Bioinformatics/base count	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Cramer's rule	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Four is magic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	GUI enabling/disabling of controls	①	②	③	④	⑤	⑥	⑦	⑧	⑨
41	Julia set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Largest number divisible by its digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Long primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	MAC Vendor Lookup	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Magic squares of doubly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Parametric polymorphism	①	②	③	④	⑤	⑥	O	O	⑨	⑩
41	Permutation test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Prime conspiracy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Primorial numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Ray-casting algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Rosetta Code/Find bare lang tags	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Scope/Function names and labels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Sorting algorithms/Strand sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Statistics/Normal distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Substitution cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Sum of the digits of n is substring of n	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Tau function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Topswops	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Variable size/Set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Variable-length quantity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Approximate equality	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Brace expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Colour pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
40	Convex hull	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Cuban primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Feigenbaum constant calculation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Humble numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Knuth's algorithm S	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	LU decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Pythagorean quadruples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Read a file character by character/UTF8	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Terminal control/Hiding the cursor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Test integerness	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	ABC words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Bitwise IO	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Check output device is a terminal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Create a file on magnetic tape	①	②	③	④	⑤	⑥		⑧	⑨	⑩
39	Display a linear combination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Events	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Factorions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	File extension is in extensions list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Floyd-Warshall algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Input/Output for lines of text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Input/Output for pairs of numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Integer roots	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Kahan summation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Lychrel numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
39	Metered concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Multiple regression	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Order disjoint list items	①	②	③	④	⑤	⑥	⑦	⑧		⑩
39	Palindrome dates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Parsing/RPN to infix conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Pathological floating point problems	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Penney's game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	QR decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Safe primes and unsafe primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Sutherland-Hodgman polygon clipping	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Terminal control/Inverse video	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Vampire number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Abbreviations, simple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Break OO privacy	①	②	③	④	⑤	⑥	⑦	⑧	O
38	Constrained genericity	①	②	③	④	⑤	⑥	O	O	O
38	Cousin primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Fibonacci word/fractal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Find palindromic numbers in both binary and ternary bases	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Find the intersection of a line with a plane	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Function prototype	①	②	③	④	⑤	⑥	⑦	O	⑨	⑩
38	Lah numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Maze solving	①	②	③	④	⑤	⑥	⑦	⑧	⑨
38	Metronome	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Minesweeper game	①	②	③	④	⑤	⑥	⑦	⑧	⑨
38	Solve the no connection puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Terminal control/Unicode output	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Base 16 numbers needing a to f	①	②	③	④	⑤	⑥	⑦	⑧		⑩
37	Frobenius numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	MD4	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Multiline shebang	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Mutex	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Numbers divisible by their individual digits, but not by the product of their digits.	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Object serialization	①	②	③	④	⑤	⑥	⑦	⑧	O	O
37	Pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	RSA code	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Square-free integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Yellowstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Apply a digital filter (direct form II transposed)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Arithmetic-geometric mean/Calculate Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Bitmap/Bézier curves/Cubic	①	②	③	④	⑤	⑥		⑧	⑨
36	Cheryl's birthday	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Church numerals	①	②	③	④	⑤	⑥	⑦	⑧
36	Conjugate transpose	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Determine if two triangles overlap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Egyptian fractions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Extra primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Numerical integration/Gauss-Legendre Quadrature	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Ordered partitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Pentagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Product of divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Pythagoras tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	RIPEMD-160	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	Smallest square that begins with n	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Special Divisors	①	②	③	④	⑤	⑥	⑦		⑨	⑩
36	Subset sum problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Chaocipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Entropy/Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Gauss-Jordan matrix inversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Multi-dimensional array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Nice primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
35	Numbers which binary and ternary digit sum are prime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Old Russian measure of length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Parametrized SQL statement	①	②	③		⑤	⑥	⑦	⑧	⑨
35	Partition an integer x into n primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Primes whose sum of digits is 25	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Sequence: smallest number with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Sorting algorithms/Patience sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Strong and weak primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Textonyms	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Triplet of three numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Zumkeller numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Bacon cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Check input device is a terminal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Circular primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Continued fraction/Arithmetic/Construct from rational number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Decimal floating point number to binary	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Diversity prediction theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Eban numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Find words which contains more than 3 e vowels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Find words with alternating vowels and consonants	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	First power of 2 that has leading decimal digits of 12	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Galton box animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Halt and catch fire	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Longest common suffix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Modular arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨
34	Pattern matching	①	②	③	④	⑤	⑥	⑦	O	O	⑩
34	Poker hand analyser	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Reflection/List properties	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
34	Set puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Solve a Hidato puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Straddling checkerboard	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Strange numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Topic variable	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
34	Type detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Use another language to call a function	①		③	④	⑤	⑥		⑧	⑨
33	Bitcoin/address validation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
33	Bitmap/Histogram	①	②	③	④	⑤	⑥		⑧	⑨
33	Change e letters to i in words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Create an object at a given address	①	②	③	④	⑤	⑥	⑦	O	⑨
33	Dice game probabilities	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Executable library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Faulhaber's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Mersenne primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Mian-Chowla sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Multiplicative order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Negative base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Parse command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Pell's equation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Resistor mesh	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Sorting algorithms/Cycle sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Strange plus numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Terminal control/Cursor movement	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	URL parser	①	②	③	④	⑤	⑥	⑦	⑧
33	Unprimeable numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Write to Windows event log	①	②	③	④	⑤		⑦	⑧	⑨	⑩
33	Xiaolin Wu's line algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Zhang-Suen thinning algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Bitmap/Bézier curves/Quadratic	①	②	③	④	⑤	⑥		⑧	⑨
32	Burrows–Wheeler transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Chat server	①	②	③		⑤	⑥	⑦	⑧	⑨
32	Compiler/lexical analyzer	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Decision tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Draw a rotating cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Execute SNUSP	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	FTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Faulhaber's formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Implicit type conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Keyboard macros	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Length of an arc between two angles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Long literals, with continuations	①	②	③	④	⑤	⑥	⑦	⑧		⑩
32	Minimum positive multiple in base 10 using only 0 and 1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Numbers with equal rises and falls	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Numeric error propagation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Pragmatic directives	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Rosetta Code/Find unimplemented tasks	①	②	③		⑤	⑥	⑦	⑧
32	Sequence: smallest number greater than previous term with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Set of real numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Sexy primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Simple database	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Smarandache prime-digital sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Successive prime differences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Super-d numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Terminal control/Preserve screen	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Word break problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Angles (geometric), normalization and conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Arena storage pool	①	②	③	④	⑤	⑥		⑧	⑨	⑩
31	Check Machin-like formulas	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Checkpoint synchronization	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Chemical calculator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Death Star	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Digit fifth powers	①	②	③	④	⑤		⑦	⑧	⑨	⑩
31	Esthetic numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Fairshare between two and more	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Find prime numbers of the form n*n*n+2	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	First class environments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	HTTPS/Authenticated	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Jacobi symbol	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Koch curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Memory layout of a data structure	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Numbers with prime digits whose sum is 13	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	Parallel brute force	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Pierpont primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Polyspiral	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Range consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Rosetta Code/Fix code tags	①	②	③		⑤	⑥	⑦	⑧		⑩
31	Shift list elements to left by 3	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	State name puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Stirling numbers of the first kind	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Stirling numbers of the second kind	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Strange unique prime triplets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Stream merge	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Sum of elements below main diagonal of matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Superellipse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Update a configuration file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Verify distribution uniformity/Chi-squared test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Weird numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Window creation/X11	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Word wheel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	AVL tree	①	②	③	④	⑤	⑥		⑧	⑨
30	Alternade words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Bin given limits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Chebyshev coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Deconvolution/1D	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Fermat numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Law of cosines - triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Magnanimous numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
30	Peano curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
30	Perlin noise	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Sum and product puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Active Directory/Connect	①	②	③	④	⑤		⑦	⑧	⑨
29	Find first and last set bit of a long integer	①	②	③	④	⑤		⑦	⑧	⑨	⑩
29	Find words whose first and last three letters are equal	①	②	③	④	⑤	⑥	⑦	⑧		⑩
29	First perfect square in base n with n unique digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Formal power series	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Fraction reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Generate random chess position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Honeycombs	①	②	③	④		⑥	⑦	⑧	⑨
29	Kronecker product based fractals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Machine code	①	②	③	④	⑤	⑥		⑧	⑨
29	Möbius function	①	②	③	④	⑤		⑦		⑨	⑩
29	Nonoblock	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Plasma effect	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Primes with digits in nondecreasing order	①	②	③	④	⑤	⑥	⑦	⑧		⑩
29	Ramsey's theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Reflection/List methods	①	②	③	④	⑤	⑥	⑦	⑧	O
29	Sierpinski pentagon	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Summarize primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Superpermutation minimisation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Table creation	①	②	③	④	⑤	⑥		⑧	⑨	⑩
29	Teacup rim text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Thiele's interpolation formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	World Cup group stage	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	A* search algorithm	①	②	③	④	⑤	⑥		⑧	⑨	⑩
28	Birthday problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Cipolla's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Common sorted list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Cut a rectangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Find largest left truncatable prime in a given base	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Find words which contains all the vowels	①	②	③	④	⑤	⑥	⑦	⑧		⑩
28	Finite state machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Go Fish	①	②	③	④	⑤	⑥		⑧	⑨
28	Hunt the Wumpus	①	②	③	④	⑤	⑥	⑦	⑧
28	Increasing gaps between consecutive Niven numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Mayan numerals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Monads/Maybe monad	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Natural sorting	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Nautical bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Palindromic gapful numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Same fringe	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Shortest common supersequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Show the (decimal) value of a number of 1s appended with a 3, then squared	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Solve a Holy Knight's tour	①	②	③	④	⑤	⑥	⑦	⑧		⑩
28	Sorting algorithms/Cocktail sort with shifting bounds	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Sylvester's sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
28	The ISAAC Cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Tonelli-Shanks algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Twin primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
28	Welch's t-test	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Abelian sandpile model	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Calkin-Wilf sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Card shuffles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Color wheel	①	②	③	④	⑤	⑥	⑦	⑧
27	Distinct power numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Distributed programming	①	②	③		⑤	⑥	⑦	⑧	⑨
27	Find if a point is within a triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Fixed length records	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Function frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Idiomatically determine all the characters that can be used for symbols	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Image convolution	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Intersecting number wheels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	N-smooth numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Next highest int from digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Paraffins	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Partition function P	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Ramer-Douglas-Peucker line simplification	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Safe addition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Sequence of primorial primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Simulate input/Keyboard	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Video display modes	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
27	Wieferich primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
27	Yahoo! search interface	①	②	③		⑤	⑥	⑦	⑧
26	Audio alarm	①	②	③	④		⑥		⑧		⑩
26	Base58Check encoding	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Bioinformatics/Sequence mutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Changeable words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	De Bruijn sequences	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Elliptic curve arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Find prime n such that reversed n is also prime	①	②	③	④	⑤	⑥	⑦		⑨	⑩
26	Hough transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Kolakoski sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Linux CPU utilization	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Lucky and even lucky numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Magic squares of singly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Merge and aggregate datasets	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Parse an IP Address	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	RCRPG	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Random Latin squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Snake and Ladder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	UPC	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Words from neighbour ones	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Almkvist-Giullera formula for pi	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Common list elements	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Count how many vowels and consonants occur in a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Deming's Funnel	①	②	③	④	⑤	⑥	⑦	⑧
25	Elementary cellular automaton/Random Number Generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
25	K-means++ clustering	①	②	③	④	⑤	⑥		⑧	⑨
25	List rooted trees	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Make a backup file	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Mind boggling card trick	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Neighbour primes	①	②	③	④	⑤	⑥	⑦			⑩
25	Odd words	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Play recorded sounds	①	②	③	④		⑥		⑧
25	Playfair cipher	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Pseudo-random numbers/PCG32	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Self numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Total circles area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	ASCII art diagram converter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Active Directory/Search for a user	①	②	③	④	⑤		⑦	⑧	⑨	⑩
24	Addition chains	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Assertions in design by contract	①	②	③	④	⑤	⑥	⑦			⑩
24	Commatizing numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Coprime triplets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Doomsday rule	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Find first missing positive	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Markov chain text generator	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Matrix chain multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Motzkin numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Numbers in base 10 that are palindromic in bases 2, 4, and 16	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Numbers with same digit set in base 10 and base 16	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Numeric separator syntax	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Padovan sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Percolation/Mean run density	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Permutations/Rank of a permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Piprimes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Pseudo-random numbers/Xorshift star	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Record sound	①	②	③	④	⑤	⑥		⑧	⑨
24	Reverse the gender of a string	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	SOAP	①	②	③	④	⑤		⑦	⑧	⑨
24	Sokoban	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Solve a Hopido puzzle	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Solve a Numbrix puzzle	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Untrusted environment	①		③	④	⑤	⑥	⑦		⑨	⑩
23	15 puzzle solver	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Abelian sandpile model/Identity	①	②	③	④	⑤	⑥		⑧		⑩
23	Cistercian numerals	①	②	③	④	⑤	⑥		⑧	⑨	⑩
23	Consecutive primes with ascending or descending differences	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Create an object/Native demonstration	①	②	③	④	⑤	⑥	⑦	⑧	O
23	Exponentiation with infix operators in (or operating on) the base	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	File size distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Find duplicate files	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Largest five adjacent number	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Levenshtein distance/Alignment	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Main step of GOST 28147-89	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Maximum difference between adjacent elements of list	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Monads/List monad	①	②	③	④	⑤	⑥	⑦	⑧
23	Nested templated data	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Numbers in base-16 representation that cannot be written with decimal digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Orbital elements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Order by pair comparisons	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Pig the dice game/Player	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Polynomial synthetic division	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Reflection/Get source	①	②	③	④	⑤	⑥		⑧	O	⑩
23	Sierpinski arrowhead curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Sort the letters of string in alphabetical order	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Special neighbor primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
23	Spelling of ordinal numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Sum of primes in odd positions is prime	①	②	③	④	⑤	⑥	⑦		⑨	⑩
23	Ulam numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Unique characters in each string	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Bilinear interpolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Bitcoin/public point to address	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Data Encryption Standard	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Eertree	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Elementary cellular automaton/Infinite length	①	②	③	④	⑤	⑥	⑦	⑧
22	Find minimum number of coins that make a given value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Index finite lists of positive integers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Joystick position	①	②	③		⑤			⑧	⑨
22	Kosaraju	①	②	③	④	⑤	⑥	⑦	⑧
22	Mastermind	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Median filter	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Montgomery reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Native shebang	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Odd squarefree semiprimes	①	②	③	④	⑤	⑥	⑦			⑩
22	Palindromic primes	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Perceptron	①	②	③	④	⑤	⑥		⑧		⑩
22	Rare numbers	①	②	③	④		⑥		⑧		⑩
22	Sequence: nth number with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Sleeping Beauty problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Smallest power of 6 whose decimal expansion contains n	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Solve triangle solitare puzzle	①	②	③	④	⑤	⑥	⑦	⑧
22	Sunflower fractal	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Vigenère cipher/Cryptanalysis	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Vogel's approximation method	①	②	③	④	⑤	⑥		⑧	⑨	⑩
21	Arithmetic coding/As a generalized change of radix	①	②	③	④	⑤	⑥	⑦	⑧
21	EKG sequence convergence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Erdős-primes	①	②	③	④	⑤	⑥	⑦			⑩
21	Find words which contain the most consonants	①	②	③	④	⑤	⑥	⑦			⑩
21	Harmonic series	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Just in time processing on a character stream	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	K-d tree	①	②	③	④	⑤	⑥		⑧	⑨
21	Knuth's power tree	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Latin Squares in reduced form	①	②	③	④	⑤	⑥	⑦	⑧
21	Line circle intersection	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Minimum numbers of three lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	N-body problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Palindromic primes in base 16	①	②	③	④	⑤	⑥	⑦			⑩
21	Pancake numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Prime numbers which contain 123	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Prime words	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Print debugging statement	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Pseudo-random numbers/Combined recursive generator MRG32k3a	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Readline interface	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Simulate input/Mouse	①	②	③	④	⑤			⑧	⑨
21	Sum data type	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Window management	①	②	③		⑤	⑥	⑦	⑧	⑨
20	Canonicalize CIDR	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Color quantization	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Compiler/code generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Metallic ratios	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Monads/Writer monad	①	②	③	④	⑤	⑥	⑦	⑧
20	Most frequent k chars distance	①		③	④	⑤	⑥	⑦	⑧
20	Names to numbers	①	②	③	④	⑤	⑥	⑦	⑧
20	Next special primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Nonogram solver	①	②	③	④		⑥	⑦	⑧		⑩
20	P-value correction	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Padovan n-step number sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Prime triplets	①	②	③	④	⑤	⑥	⑦			⑩
20	Primes - allocate descendants to their ancestors	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Primes whose first and last number is 3	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Selective file copy	①	②	③	④	⑤	⑥	⑦			⑩
20	Separate the house number from the street name	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Special factorials	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	The sieve of Sundaram	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Transportation problem	①	②	③	④	⑤	⑥				⑩
20	Wilson primes of order n	①	②	③	④	⑤	⑥	⑦			⑩
20	Word search	①	②	③	④	⑤	⑥	⑦	⑧
20	Zeckendorf arithmetic	①	②	③	④	⑤	⑥		⑧	⑨
19	Air mass	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Biorhythms	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Code segment unload	①	②	③	④	⑤		⑦	⑧		⑩
19	Compiler/virtual machine interpreter	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Concatenate two primes is also prime	①	②	③	④	⑤	⑥	⑦			⑩
19	Draw pixel 2	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Find URI in text	①	②	③	④	⑤		⑦			⑩
19	Generate random numbers without repeating a value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Imaginary base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Matrix digital rain	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Minimum number of cells after, before, above and below NxN squares	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Peaceful chess queen armies	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Percolation/Site percolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Positive decimal integers with the digit 1 occurring exactly twice	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Practical numbers	①	②	③	④	⑤	⑥	⑦	⑧
19	Primes which contain only one odd digit	①	②	③	④	⑤	⑥	⑦			⑩
19	Print itself	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Reverse the order of lines in a text file while preserving the contents of each line	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	SQL-based authentication	①	②	③		⑤	⑥	⑦	⑧	⑨
19	Snake	①	②	③	④	⑤	⑥	⑦		⑨
19	Substring primes	①	②	③	④	⑤	⑥	⑦			⑩
19	Terminal control/Positional read	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Banker's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Bitmap/Read an image through a pipe	①	②	③	④	⑤	⑥		⑧	⑨
18	Compare sorting algorithms' performance	①	②	③	④		⑥		⑧	⑨	⑩
18	Cubic Special Primes	①	②	③	④	⑤	⑥	⑦			⑩
18	Cyclops numbers	①	②	③	④	⑤	⑥	⑦			⑩
18	Cyclotomic polynomial	①	②	③	④	⑤	⑥	⑦	⑧
18	Free polyominoes enumeration	①	②	③	④		⑥	⑦	⑧
18	Getting the number of decimals	①	②	③	④	⑤		⑦	⑧	⑨	⑩
18	HTTPS/Client-authenticated	①	②	③	④	⑤	⑥	⑦	⑧	O
18	Logistic curve fitting in epidemiology	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	NYSIIS	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Nimber arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Numbers whose count of divisors is prime	①	②	③	④	⑤	⑥	⑦			⑩
18	Own digits power sum	①	②	③	④	⑤		⑦	⑧	⑨
18	Particle swarm optimization	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Percolation/Mean cluster density	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Permutations with some identical elements	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Permuted multiples	①	②	③	④	⑤	⑥	⑦			⑩
18	Proof	①		③	④	⑤	⑥		O	O
18	Pseudo-random numbers/Splitmix64	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Self-hosting compiler	①	O	③	④	⑤	⑥		⑧
18	Square root by hand	①	②	③	④	⑤	⑥	⑦			⑩
18	Suffix tree	①	②	③	④	⑤	⑥	⑦	⑧
18	Tarjan	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Two bullet roulette	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Vibrating rectangles	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Word ladder	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Aspect oriented programming	①	②	③	④	⑤		⑦	⑧	⑨
17	Bitmap/PPM conversion through a pipe	①	②	③	④	⑤	⑥		⑧	⑨
17	Chernick's Carmichael numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Compare length of two strings	①	②		④	⑤	⑥		⑧	⑨
17	Compiler/syntax analyzer	①	②	③	④		⑥	⑦	⑧	⑨
17	Geometric algebra	①	②	③	④	⑤	⑥		⑧
17	Jaro-Winkler distance	①	②	③	④	⑤	⑥	⑦	⑧
17	Percolation/Bond percolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Quadrat Special Primes	①	②	③	④	⑤	⑥	⑦			⑩
17	Ramanujan's constant	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Rendezvous	①	②	③		⑤	⑥		⑧	⑨
17	Retrieve and search chat history	①	②	③		⑤	⑥	⑦	⑧	⑨
17	Safe mode	①		③	④	⑤		⑦			⑩
17	Sierpinski curve	①	②	③	④	⑤	⑥	⑦
17	Singly-linked list/Element removal	①	②	③	④	⑤	⑥		⑧	⑨
17	Smallest numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Special pythagorean triplet	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Summation of primes	①	②	③	④	⑤		⑦		⑨
17	XML validation		②	③	④	⑤	⑥	⑦	⑧	⑨
16	Bioinformatics/Subsequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Compiler/AST interpreter	①	②	③	④		⑥	⑦	⑧	⑨
16	Four is the number of letters in the ...	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Juggler sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Minimum primes	①	②	③	④	⑤	⑥	⑦		⑨
16	Numerical integration/Adaptive Simpson's method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Sierpinski square curve	①	②	③	④	⑤	⑥	⑦	⑧
16	Sine wave	①	②	③	④	⑤	⑥	⑦			⑩
16	Topological sort/Extracted top item	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Useless instructions	①	②	③	④	⑤	⑥	⑦		⑨
15	Continued fraction/Arithmetic/G(matrix ng, continued fraction n)	①	②	③	④	⑤	⑥		⑧
15	Distribution of 0 Digits in factorial series	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Factorial base numbers indexing permutations of a collection	①	②	③	④	⑤	⑥	⑦	⑧
15	Functional coverage tree	①	②	③	④	⑤	⑥	⑦	⑧
15	Gradient descent	①	②	③	④	⑤	⑥	⑦			⑩
15	Interactive help	①	②	③	④	⑤	⑥	⑦			⑩
15	Largest prime factor	①	②	③	④	⑤		⑦		⑨
15	Last list item	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
15	Legendre prime counting function	①	②	③	④	⑤	⑥	⑦
15	Longest palindromic substrings	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Modified random distribution	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Multi-base primes	①	②	③	④	⑤	⑥	⑦			⑩
15	OpenWebNet password	①	②	③	④	⑤	⑥	⑦	⑧
15	Prime numbers p which sum of prime numbers less or equal to p is prime	①	②	③	④	⑤	⑥				⑩
15	SHA-256 Merkle tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
15	Smallest multiple	①	②	③	④	⑤		⑦	⑧
15	Untouchable numbers	①	②	③	④	⑤	⑥	⑦			⑩
14	Canny edge detector	①	②	③	④		⑥		⑧	⑨
14	Deconvolution/2D+	①	②	③	④	⑤	⑥	⑦	⑧	⑨
14	Fortunate numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Generalised floating point addition	①	②	③	④	⑤		⑦			⑩
14	Largest palindrome product	①	②	③	④	⑤		⑦	⑧
14	Longest substrings without repeating characters	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Minimal steps down to 1	①	②	③	④	⑤	⑥	⑦	⑧
14	Non-transitive dice	①	②	③	④	⑤	⑥	⑦	⑧
14	Pisano period	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Run as a daemon or service	①		③		⑤	⑥		⑧	⑨
14	Text completion	①	②	③	④	⑤	⑥	⑦			⑩
14	Tree from nesting levels	①	②	③	④	⑤	⑥	⑦	⑧
14	XXXX redacted	①	②	③	④	⑤		⑦		⑨	⑩
13	Append numbers at same position in strings	①	②		④	⑤		⑦	⑧	⑨
13	Audio frequency generator	①	②	③	④		⑥	⑦
13	Checksumcolor	①	②	③	④	⑤	⑥	⑦	⑧
13	Display an outline as a nested table	①	②	③	④	⑤	⑥	⑦	⑧
13	Execute CopyPasta Language	①	②	③	④	⑤	⑥	⑦	⑧
13	Geohash	①	②	③	④	⑤	⑥	⑦	⑧
13	Graph colouring	①	②	③	④	⑤	⑥	⑦	⑧
13	Greed	①	②	③		⑤	⑥	⑦			⑩
13	Launch rocket with countdown and acceleration in stdout	①	②	③	④	⑤	⑥	⑦			⑩
13	One-time pad	①	②	③	④	⑤	⑥	⑦	⑧
13	Pandigital prime	①	②	③	④	⑤		⑦			⑩
13	Penrose tiling	①	②	③	④	⑤	⑥	⑦
13	Pentomino tiling	①	②	③	④	⑤	⑥	⑦
13	Pseudorandom number generator image	①	②	③	④	⑤	⑥	⑦
13	Railway circuit	①	②	③	④	⑤	⑥	⑦
13	Rodrigues’ rotation formula	①	②	③	④	⑤	⑥	⑦		⑨
13	Simulated annealing	①	②	③	④	⑤	⑥	⑦
13	Sorting algorithms/Tree sort on a linked list	①	②	③	④		⑥			⑨
13	Three word location	①	②	③	④	⑤	⑥	⑦		⑨
13	Unit testing	①	②	③	④	⑤	⑥				⑩
13	Using a speech engine to highlight words	①	②	③	④	⑤	⑥				⑩
13	VList	①		③	④	⑤	⑥			⑨	⑩
12	Catmull–Clark subdivision surface	①	②	③	④		⑥		⑧	⑨
12	Combinations with repetitions/Square digit chain	①	②	③	④	⑤	⑥	⑦
12	Distinct Palindromes within decimal numbers	①	②	③	④	⑤	⑥	⑦			⑩
12	External sort	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	French Republican calendar	①	②	③	④	⑤	⑥	⑦
12	Hourglass puzzle	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Largest product in a grid	①	②	③	④	⑤		⑦	⑧
12	Minkowski question-mark function	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Quoting constructs	①	②	③	④	⑤	⑥				⑩
12	Spoof game	①	②	③	④	⑤	⑥	⑦		⑨	⑩
12	Suffixation of decimal numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Tetris	①	②	③				⑦	⑧
12	Time-based one-time password algorithm	①	②	③		⑤	⑥	⑦
11	Bioinformatics/Global alignment	①	②	③	④	⑤	⑥	⑦	⑧
11	Brace expansion using ranges	①	②	③	④	⑤	⑥		⑧
11	Colour pinstripe/Printer	①	②	③	④	⑤	⑥		⑧
11	Conjugate a Latin verb	①	②	③	④	⑤	⑥	⑦			⑩
11	Count the coins/0-1	①	②	③	④	⑤	⑥	⑦
11	Curve that touches three points	①	②	③	④	⑤	⑥	⑦
11	Determine sentence type	①	②	③	④	⑤		⑦	⑧
11	Faces from a mesh	①	②	③	④	⑤	⑥	⑦	⑧
11	Fibonacci matrix-exponentiation	①	②	③	④	⑤	⑥	⑦
11	Home primes	①	②	③	④	⑤	⑥	⑦			⑩
11	Pinstripe/Printer	①	②	③	④	⑤	⑥
11	Powerful numbers	①	②	③	④	⑤	⑥	⑦
11	Range modifications	①	②	③	④	⑤	⑥	⑦	⑧
11	Resistance calculator	①	②	③	④	⑤	⑥	⑦	⑧
11	Rosetta Code/Rank languages by number of users	①	②	③		⑤	⑥	⑦	⑧		⑩
11	Square form factorization	①	②	③	④	⑤	⑥	⑦		⑨	⑩
11	Starting a web browser	①	②	③	④	⑤	⑥	⑦
11	Tree datastructures	①	②	③	④	⑤	⑥	⑦	⑧
11	Tropical algebra overloading	①	②	③	④	⑤	⑥		⑧		⑩
11	War card game	①	②	③	④	⑤	⑥	⑦	⑧
10	16 puzzle game	①	②	③	④	⑤	⑥	⑦			⑩
10	Discrete Fourier transform	①	②	③	④	⑤	⑥	⑦
10	Elliptic Curve Digital Signature Algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
10	Euclid-Mullin sequence	①	②		④	⑤		⑦	⑧
10	Find Chess960 starting position identifier	①	②	③	④	⑤	⑥	⑦
10	IPC via named pipe	①		③		⑤		⑦		⑨
10	Mayan calendar	①	②	③	④	⑤	⑥	⑦
10	Morpion solitaire	①	②	③			⑥			⑨	⑩
10	Numerical and alphabetical suffixes	①	②	③	④	⑤	⑥		⑧		⑩
10	OpenGL/Utah Teapot	①	②	③	④	⑤	⑥			⑨
10	Overloaded operators	①			④	⑤	⑥				⑩
10	Parse EBNF	①		③	④	⑤		⑦
10	Polynomial derivative	①	②		④	⑤		⑦
10	Ramanujan primes	①	②	③	④	⑤	⑥	⑦
10	Resistance network calculator	①	②	③	④	⑤	⑥	⑦	⑧
10	Rosetta Code/Tasks without examples	①		③		⑤	⑥	⑦
10	Sort an outline at every level	①	②	③	④	⑤	⑥	⑦	⑧
10	Text to HTML	①	②	③	④	⑤	⑥	⑦
10	Verhoeff algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
9	ADFGVX cipher	①	②	③	④	⑤	⑥	⑦	⑧
9	Compiler/Verifying syntax	①	②	③	④	⑤	⑥	⑦		⑨
9	Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)	①	②	③	④	⑤	⑥
9	Fibonacci heap	①	②	③	④	⑤	⑥		⑧
9	Integer long division	①	②		④	⑤	⑥	⑦
9	Multidimensional Newton-Raphson method	①	②	③	④	⑤	⑥
9	Terminal control/Restricted width positional input/No wrapping	①	②	③	④	⑤	⑥				⑩
9	Terminal control/Restricted width positional input/With wrapping	①	②	③	④	⑤	⑥				⑩
9	User defined pipe and redirection operators	①	②	③		⑤		⑦
8	Addition-chain exponentiation	①		③	④		⑥			⑨
8	Doubly-linked list/Element removal	①	②	③	④	⑤	⑥
8	Hex words	①	②		④	⑤		⑦	⑧
8	Jaccard index	①	②		④	⑤		⑦
8	Magic constant	①	②		④	⑤		⑦
8	OpenGL pixel shader	①		③	④					⑨
8	Price list behind API	①	②	③	④	⑤	⑥	⑦	⑧
8	Ramanujan primes/twins	①	②	③	④	⑤	⑥	⑦
8	Random sentence from book	①	②		④	⑤	⑥	⑦	⑧
8	Raster bars	①	②	③	④	⑤	⑥
8	Robots	①	②	③		⑤
8	Rosetta Code/Run examples	①		③		⑤	⑥
8	Simple turtle graphics	①	②		④			⑦	⑧
8	Smallest enclosing circle problem	①	②	③	④	⑤	⑥		⑧
8	Tamagotchi emulator	①	②	③	④		⑥
8	URL shortener		②	③		⑤			⑧
8	Wordiff	①	②		④	⑤	⑥	⑦	⑧		⑩
7	Audio overlap loop		②	③	④		⑥
7	Black Box	①	②	③	④		⑥
7	Boids	①	②	③	④		⑥			⑨
7	Chess player	①		③	④			⑦	⑧
7	Dating agency	①	②		④	⑤		⑦	⑧
7	Hexapawn	①	②	③	④				⑧
7	Horse racing	①	②	③	④	⑤	⑥	⑦
7	I'm a software engineer, get me out of here	①	②	③	④	⑤		⑦
7	Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique	①	②	③	④	⑤	⑥
7	P-Adic numbers, basic	①	②	③	④	⑤	⑥
7	Process SMIL directives in XML data	①		③	④	⑤	⑥	⑦
7	Recursive descent parser generator	①	②	③		⑤		⑦
7	Remote agent/Agent logic	①	②	③				⑦		⑨
7	Remote agent/Simulation	①	②	③				⑦		⑨
7	Solve equations with substitution method	①	②		④	⑤		⑦
7	Strassen's algorithm	①	②	③	④	⑤	⑥		⑧
7	Waveform analysis/Doh ray me	①	②	③	④	⑤	⑥	⑦
6	Compiler/Simple file inclusion pre processor	①	②		④	⑤
6	Particle fountain	①	②		④	⑤		⑦
6	Peripheral drift illusion	①	②		④	⑤	⑥	⑦
6	Remote agent/Agent interface	①	②	③						⑨
6	Solve a Rubik's Cube	①	②	③	④		⑥
5	B-spline	①	②		④	⑤
5	Create your own text control codes	①	②		④	⑤
5	Generalised floating point multiplication	①	②	③	④
5	Number triplets game	①	②		④			⑦
5	OLE automation	①		③					⑧
5	P-Adic square roots	①	②		④		⑥
5	Solving coin problems	①	②	③	④			⑦
5	Unicode polynomial equation	①	②	③	④		⑥
5	Waveform analysis/Top and tail	①	②	③	④		⑥
5	Weather routing	①	②	③	④		⑥
5	WiktionaryDumps to words	①	②							⑨
4	15 puzzle game in 3D	①		③	④
4	Blackjack strategy	①		③	④		⑥
4	Erdős–Woods numbers	①	②		④				⑧
4	Multiton	①	②		④	⑤
4	Rosetta Code/List authors of task descriptions	①		③		⑤	⑥
4	Round-robin tournament schedule				④	⑤
4	Ukkonen’s suffix tree construction	①	②	③	④
4	Using the Meetup.com API			③					⑧
4	Vidir	①			④	⑤
3	CLI-based maze-game	①					⑥
3	Elevator simulation	①			④
3	Uno (Card Game)	①	②						⑧
2	IRC gateway			③
1	Mine a bitcoin	①