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 Go            ③ Julia         ④ Raku          ⑤ Nim          
    ⑥ Wren          ⑦ Perl          ⑧ Python        ⑨ C             ⑩ REXX         

As of 2021-09-19T20:23:40Z :: Tasks: 1138 :: Draft Tasks:303 :: Total Tasks: 1441 :: Total Examples: 79871

Count	Task	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
500	Hello world/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
332	99 bottles of beer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
325	FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
320	100 doors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
296	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
269	A+B	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
263	Empty program	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
242	Function definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
234	Loops/Infinite	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
229	Arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
228	Loops/While	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
228	Reverse a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
226	Ackermann function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
211	Loops/For	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
207	Conditional structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
204	Greatest common divisor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
200	Arithmetic/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
198	Greatest element of a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
192	Array concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
191	Even or odd	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
186	Averages/Arithmetic mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
186	Integer comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
185	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
179	Hello world/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
177	Copy a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
177	Sieve of Eratosthenes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
171	Boolean values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
170	Loops/Downward for	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Array length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
169	Binary digits	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	Character codes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
168	String concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
167	Apply a callback to an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Integer sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Loops/Do-while	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/For with a specified step	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
165	Palindrome detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
164	Loops/Foreach	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
164	Loops/N plus one half	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
164	Rot-13	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
164	Sum and product of an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
163	String length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	Loops/Break	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
161	Tokenize a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
158	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	Generic swap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Leap year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Empty string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Hailstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Sum of squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
154	Logical operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
153	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
149	Factors of an integer	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	Remove duplicate elements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
146	Roman numerals/Encode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Caesar cipher	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	Loop over multiple arrays simultaneously	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	System time	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
143	Determine if a string is numeric	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
143	Higher-order functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
141	Sorting algorithms/Quicksort	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
140	Stack	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
138	Bitwise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
138	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
135	Command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Happy numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Loops/Continue	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
134	Create a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Generate lower case ASCII alphabet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Mutual recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Zero to the zero power	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Check that file exists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Sleep	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Least common multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Flatten a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Literals/String	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	ABC problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Date format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Balanced brackets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Mandelbrot set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Program termination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Ethiopian multiplication	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	Literals/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Binary search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Function composition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Include a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Count in octal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	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
122	Associative array/Iteration	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	Averages/Root mean square	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	Loops/Nested	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	Null object	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Case-sensitivity of identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Haversine formula	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	Pick random element	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Identity matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Matrix transposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Multiplication tables	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	Classes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	O
116	Guess the number/With feedback	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	Matrix multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Averages/Median	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	File size	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Letter frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	String matching	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Align columns	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Environment variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Find limit of recursion	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	Perfect numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Rename a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Return multiple values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Assertions	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	HTTP	①	②	③	④	⑤		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	Arithmetic/Complex	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	Evaluate binomial coefficients	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	Arithmetic-geometric mean	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	Levenshtein distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Reverse words in a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	String append	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	Averages/Pythagorean means	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Program name	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Run-length encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Anonymous recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Comma quibbling	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Prime decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Zig-zag matrix	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	String interpolation (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Strip whitespace from a string/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Exceptions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Sorting algorithms/Merge sort	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	Harshad or Niven series	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
101	Ordered words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	The Twelve Days of Christmas	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Call a function	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	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	Sierpinski carpet	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	String prepend	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	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	Range expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Abundant, deficient and perfect number classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Collections	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Enumerations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Execute Brain****	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	First-class functions	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	Evolutionary algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Hello world/Newbie	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	Sorting algorithms/Cocktail sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Averages/Mode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Create an HTML table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Dragon curve	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	Random number generator (included)	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	Cumulative standard deviation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Hofstadter Q sequence	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	Amicable pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Forward difference	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
90	Symmetric difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Averages/Simple moving average	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	Entropy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Gray code	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	Catamorphism	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	Map range	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	Abstract type	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	Compare a list of strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Menu	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Almost prime	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	Floyd's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Queue/Usage	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	Last Friday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	SEDOLs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Sort an array of composite structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Window creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
83	Closures/Value capture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Count in factors	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	Non-decimal radices/Convert	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	URL decoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	File modification time	①	②	③	④	⑤		⑦	⑧	⑨	⑩
82	Introspection	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	Word wrap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Address of a variable	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Bitmap	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	Find the last Sunday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Operator precedence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Order two numerical lists	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	Repeat	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	Top rank per group	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	CRC-32	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Hello world/Line printer	①	②	③	④	⑤		⑦	⑧	⑨	⑩
80	Here document	①	②	③	④	⑤	⑥	⑦	⑧	O	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	Roots of unity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Show ASCII table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Web scraping	①	②	③	④	⑤		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	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	Munchausen numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Playing cards	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	Sockets	①	②	③	④	⑤		⑦	⑧	⑨
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	Split a character string based on change of character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	XML/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Anti-primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Date manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Dynamic variable names	①	②	③	④	⑤	⑥	⑦	⑧	O	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	Proper divisors	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	Keyboard input/Obtain a Y or N response	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Modular inverse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Phrase reversals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Population count	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Semordnilap	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
75	Calendar	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	Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Unicode variable names	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	Anagrams/Deranged anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Equilibrium index	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	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	SHA-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨
74	Special characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Take notes on the command line	①	②	③	④	⑤		⑦	⑧	⑨	⑩
74	Vigenère cipher	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	Animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Enforced immutability	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	Execute HQ9+	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Flow-control structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Multiple distinct objects	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Rock-paper-scissors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Singly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Sort disjoint sublist	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	Convert seconds to compound duration	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	Guess the number/With feedback (player)	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	SHA-256	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	15 puzzle game	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	Combinations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Currying	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Euler's sum of powers conjecture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Fractal tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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
70	Bitmap/Bresenham's line algorithm	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	Extend your language	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	Numerical integration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Old lady swallowed a fly	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	Sorting algorithms/Stooge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Trabb Pardo–Knuth algorithm	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	Catalan numbers/Pascal's triangle	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	Draw a sphere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Fork	①	②	③	④	⑤		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	Nested function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Self-describing numbers	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	Barnsley fern	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Department numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Euler method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Amb	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Arithmetic/Rational	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	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	Runtime evaluation		②	③	④	⑤	⑥	⑦	⑧	O	⑩
67	Sequence of primes by trial division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Sort stability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Special variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Square but not cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Unix/ls	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	General FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Inheritance/Multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Sort three variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Strip control codes and extended characters from a string	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	100 prisoners	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Continued fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	HTTPS	①	②	③	④	⑤		⑦	⑧	⑨
65	Memory allocation	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
65	Yin and yang	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Angle difference between two bearings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Attractive numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Damm algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Factors of a Mersenne number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Jewels and stones	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Modular exponentiation	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	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	Word frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Animate a pendulum	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	Cholesky decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Exponentiation order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Get system command output	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	Semiprime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Undefined values	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	Extract file extension	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Generator/Exponential	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	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	Van Eck sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	24 game/Solve	①	②	③	④	⑤	⑥	⑦	⑧		⑩
61	Averages/Mean time of day	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	Emirp primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Host introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Sorting algorithms/Sleep sort	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	Two sum	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	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	Bitmap/Write a PPM file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	CUSIP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Gapful numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Huffman coding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Integer overflow	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	Longest common prefix	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	Partial function application	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	4-rings or 4-squares puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Brownian tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Dutch national flag problem	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
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	Leonardo numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Long year	①	②	③	④	⑤	⑥	⑦	⑧		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	Magic 8-ball	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	Random number generator (device)	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	Deal cards for FreeCell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Define a primitive data type	①	②	③	④	⑤	⑥	⑦	⑧	O
57	Delegates	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Determine if a string has all the same characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Doubly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Draw a cuboid	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Fibonacci word	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	ISBN13 check digit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	LZW compression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Matrix-exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Multisplit	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	Scope modifiers	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	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	Base64 encode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	DNS query	①	②	③	④	⑤		⑦	⑧	⑨	⑩
56	Determine if a string is collapsible	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Dinesman's multiple-dwelling problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Discordian date	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	Grayscale image	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Modulinos	①	②	③	④		⑥	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	④	⑤		⑦	⑧	⑨	⑩
56	Stack traces	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Terminal control/Cursor positioning	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Chinese zodiac	①	②	③	④	⑤	⑥	⑦	⑧	⑨
55	Draw a pixel	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	Runtime evaluation/In an environment		②	③	④	⑤	⑥	⑦	⑧	O	⑩
55	XML/XPath	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Bernoulli numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	FASTA format	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	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	Perfect shuffle	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	Synchronous concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨
54	Universal Turing machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Validate International Securities Identification Number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Base64 decode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨
53	Call a function in a shared library	①	②	③	④	⑤		⑦	⑧	⑨	⑩
53	Convert decimal number to rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Copy stdin to stdout	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Dijkstra's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Dining philosophers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Heronian triangles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Longest common substring	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	④	⑤		⑦	⑧	⑨	⑩
53	Statistics/Basic	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	First-class functions/Use numbers analogously	①	②	③	④	⑤	⑥	⑦	⑧	O	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	McNuggets problem	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	Shoelace formula for polygonal area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Sort numbers lexicographically	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Archimedean spiral	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	Farey sequence	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	Move-to-front algorithm	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
50	Colour bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Determinant and permanent	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Find the intersection of two lines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Jaro similarity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	RPG attributes generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Search a list of records	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	Two identical strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Zebra puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Determine if a string has all unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Doubly-linked list/Element insertion	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	④	⑤		⑦	⑧	⑨
49	Egyptian division	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	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	Metaprogramming	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	Execute a Markov algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Fusc sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	History variables	①	②	③	④	⑤	⑥	⑦	⑧	O	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	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	Append a record to the end of a text file	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 only one instance is running	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Generate Chess960 starting position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Nim game	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	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	Bell numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Determine if a string is squeezable	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Element-wise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Image noise	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	Sorting algorithms/Radix sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Text between	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	Currency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Days between dates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Doubly-linked list/Definition	①	②	③	④	⑤	⑥		⑧	⑨	⑩
45	Rosetta Code/Count examples	①	②	③	④	⑤		⑦	⑧
45	Secure temporary file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Send an unknown method call	①	②	③	④	O	⑥	⑦	⑧	O
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	Sum to 100	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Taxicab numbers	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	Abbreviations, automatic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Atomic updates	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Bitmap/Read a PPM file	①	②	③	④	⑤		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	Elementary cellular automaton	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Fivenum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Flipping bits game	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	Largest proper divisor of n	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	Sorting Algorithms/Circle Sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Speech synthesis	①	②	③	④	⑤		⑦	⑧	⑨	⑩
44	Sum of divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Sum of first n cubes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Twelve statements	①	②	③	④	⑤	⑥	⑦	⑧		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	Hilbert curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
43	Inverted index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Keyboard input/Flush the keyboard buffer	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	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	Ranking methods	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	Start from a main routine	①	②	③	④	⑤	⑥	⑦	O	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	UTF-8 encode and decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨
43	Voronoi diagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Bitmap/Midpoint circle algorithm	①	②	③	④	⑤	⑥		⑧	⑨	⑩
42	Calendar - for "REAL" programmers	①	②	③	④	⑤	⑥	⑦	O	⑨	⑩
42	Color of a screen pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Combinations and permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Loops/With multiple ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Mertens function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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
42	Tau number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Words containing "the" substring	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	Casting out nines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Chowla numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Cycle detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Euler's identity	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	Idiomatically determine all the lowercase and uppercase letters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Isqrt (integer square root) of X	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Julia set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Long primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Parallel calculations	①	②	③	④	⑤		⑦	⑧	⑨
41	Parametric polymorphism	①	②	③	④	⑤	⑥	O	O	⑨	⑩
41	Perfect totient numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Permutation test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Primality by Wilson's theorem	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	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	Sum of the digits of n is substring of n	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	Brace expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Brazilian numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Colour pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
40	Cramer's rule	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	Largest number divisible by its digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Loops/Wrong ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Magic squares of doubly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Rosetta Code/Find bare lang tags	①	②	③	④	⑤		⑦	⑧	⑨	⑩
40	Statistics/Normal distribution	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
39	Create a file on magnetic tape	①	②	③	④	⑤	⑥		⑧	⑨	⑩
39	Cuban primes	①	②	③	④	⑤	⑥	⑦	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	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	Four is magic	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	Kahan summation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	MAC Vendor Lookup	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Penney's game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Pythagorean quadruples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	QR decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Read a file character by character/UTF8	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Substitution cipher	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	Additive primes	①	②	③	④	⑤	⑥	⑦	⑧		⑩
38	Approximate equality	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Break OO privacy	①	②	③	④	⑤	⑥	⑦	⑧	O
38	Check output device is a terminal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Constrained genericity	①	②	③	④	⑤	⑥	O	O	O
38	Convex hull	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Coprimes	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	Input/Output for pairs of numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Integer roots	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Lychrel numbers	①	②	③	④	⑤	⑥	⑦	⑧		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	Pathological floating point problems	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Safe primes and unsafe primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Solve the no connection puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Tau function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Terminal control/Unicode output	①	②	③	④	⑤	⑥	⑦	⑧	⑨
38	Test integerness	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Bitwise IO	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	MD4	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
36	Cousin primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Egyptian fractions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Lah numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Multiline shebang	①	②	③	④	⑤		⑦	⑧	⑨
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	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	Subset sum problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Yellowstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	ABC words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Apply a digital filter (direct form II transposed)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Arithmetic-geometric mean/Calculate Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Base 16 numbers needing a to f	①	②	③	④	⑤	⑥	⑦	⑧		⑩
35	Bitmap/Bézier curves/Cubic	①	②	③	④	⑤	⑥		⑧	⑨
35	Determine if two triangles overlap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Entropy/Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Extra primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Factorions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Frobenius numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Mutex	①	②	③	④	⑤		⑦	⑧	⑨
35	Nice primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
35	Parametrized SQL statement	①	②	③	④	⑤		⑦	⑧	⑨
35	Partition an integer x into n primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Product of divisors	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	Textonyms	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Zumkeller numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Check input device is a terminal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Cheryl's birthday	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Church numerals	①	②	③	④	⑤	⑥	⑦	⑧
34	Conjugate transpose	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Diversity prediction theorem	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	Multi-dimensional array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Old Russian measure of length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Primes which sum of digits is 25	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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
33	Bacon cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Bitcoin/address validation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
33	Chaocipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨
33	Continued fraction/Arithmetic/Construct from rational number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Decimal floating point number to binary	①	②	③	④	⑤	⑥	⑦	⑧		⑩
33	Dice game probabilities	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Eban numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Executable library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	First power of 2 that has leading decimal digits of 12	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Longest common suffix	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	Reflection/List properties	①	②	③	④	⑤	⑥	⑦	⑧	O	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	Special Divisors	①	②	③	④	⑤	⑥	⑦		⑨	⑩
33	Strange plus numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Strong and weak primes	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	Triplet of three numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Type detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Use another language to call a function	①	②		④	⑤	⑥		⑧	⑨
33	Xiaolin Wu's line 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	Bitmap/Histogram	①	②	③	④	⑤	⑥		⑧	⑨
32	Chat server	①	②	③	④	⑤		⑦	⑧	⑨
32	Compiler/lexical analyzer	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Faulhaber's formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Faulhaber's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Implicit type conversion	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	Mersenne primes	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	Pell's equation	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	④	⑤		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	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	URL parser	①	②	③	④	⑤	⑥	⑦	⑧
32	Word break problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
32	Write to Windows event log	①	②	③	④			⑦	⑧	⑨	⑩
32	Zhang-Suen thinning algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Arena storage pool	①	②	③	④	⑤	⑥		⑧	⑨	⑩
31	Burrows–Wheeler transform	①	②	③	④	⑤	⑥	⑦	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	Create an object at a given address	①	②	③	④	⑤		⑦	O	⑨
31	FTP	①	②	③	④	⑤		⑦	⑧	⑨
31	Find prime numbers of the form n*n*n+2	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	Find words with alternating vowels and consonants	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	First class environments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Gauss-Jordan matrix inversion	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Jacobi symbol	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Keyboard macros	①	②	③	④	⑤		⑦	⑧	⑨	⑩
31	Koch curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Modular arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Numbers which binary and ternary digit sum are prime	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	Numeric error propagation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Parallel brute force	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Rosetta Code/Fix code tags	①	②	③	④	⑤		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	Successive prime differences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Unprimeable numbers	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	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	Angles (geometric), normalization and conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Change e letters to i in words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Chemical calculator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Circular primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Death Star	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Decision tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Deconvolution/1D	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Fairshare between two and more	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Find words which contains more than 3 e vowels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	HTTPS/Authenticated	①	②	③	④	⑤		⑦	⑧	⑨
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	Polyspiral	①	②	③	④	⑤	⑥	⑦	⑧	⑨
30	Range consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Stream merge	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
30	Superellipse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Window creation/X11	①	②	③	④	⑤		⑦	⑧	⑨
29	Bin given limits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Chebyshev coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Find first and last set bit of a long integer	①	②	③	④		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	Honeycombs	①	②	③		⑤	⑥	⑦	⑧	⑨
29	Law of cosines - triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Machine code	①	②	③	④	⑤	⑥		⑧	⑨
29	Memory layout of a data structure	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Minimum positive multiple in base 10 using only 0 and 1	①	②	③	④	⑤	⑥	⑦		⑨	⑩
29	Möbius function	①	②	③	④		⑥	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	Ramsey's theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	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	Active Directory/Connect	①	②	③	④			⑦	⑧	⑨
28	Birthday problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Fermat numbers	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	First perfect square in base n with n unique digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Generate random chess position	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	Kronecker product based fractals	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	Pierpont primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Primes with digits in nondecreasing order	①	②	③	④	⑤	⑥	⑦	⑧		⑩
28	Reflection/List methods	①	②	③	④	⑤	⑥	⑦	⑧	O
28	Same fringe	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	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
27	Abelian sandpile model	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Common sorted list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Cut a rectangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Distributed programming	①	②	③	④	⑤		⑦	⑧	⑨
27	Finite state machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Image convolution	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Long literals, with continuations	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Magnanimous numbers	①	②	③	④	⑤	⑥	⑦		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	Sierpinski pentagon		②	③	④	⑤	⑥	⑦	⑧	⑨
27	Sum of elements below main diagonal of matrix	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Teacup rim text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Twin primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
27	Welch's t-test	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Audio alarm	①	②	③		⑤	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	Cipolla's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Fixed length records	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Function frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Hough transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Idiomatically determine all the characters that can be used for symbols	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Increasing gaps between consecutive Niven numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Intersecting number wheels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Kolakoski sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Magic squares of singly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Shortest common supersequence	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	Yahoo! search interface	①	②		④	⑤		⑦	⑧
25	Elliptic curve arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Find words whose first and last three letters are equal	①	②	③	④	⑤	⑥	⑦			⑩
25	K-means++ clustering	①	②	③	④	⑤	⑥		⑧	⑨
25	Linux CPU utilization	①	②	③	④	⑤		⑦	⑧	⑨	⑩
25	List rooted trees	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Lucky and even lucky numbers	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	Merge and aggregate datasets	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Play recorded sounds	①	②	③		⑤	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	Simulate input/Keyboard	①	②		④	⑤		⑦	⑧	⑨	⑩
25	Total circles area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Video display modes	①	②	③	④	⑤		⑦	⑧	O	⑩
24	Almkvist-Giullera formula for pi	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	De Bruijn sequences	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Deming's Funnel	①	②	③	④	⑤	⑥	⑦	⑧
24	Distinct power numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Elementary cellular automaton/Random Number Generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Esthetic numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Find prime n such that reversed n is also prime	①	②	③	④	⑤	⑥	⑦		⑨	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	Mind boggling card trick	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Neighbour primes	①	②	③	④	⑤	⑥	⑦			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	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	Reverse the gender of a string	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	Words from neighbour ones	①	②	③	④	⑤	⑥	⑦		⑨	⑩
23	15 puzzle solver	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Active Directory/Search for a user	①	②	③	④			⑦	⑧	⑨	⑩
23	Addition chains	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Changeable words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Cistercian numerals	①	②	③	④	⑤	⑥		⑧	⑨	⑩
23	Commatizing numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Common list elements	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	Find duplicate files	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Main step of GOST 28147-89	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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 with same digit set in base 10 and base 16	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Numeric separator syntax	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Orbital elements	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	Pseudo-random numbers/Xorshift star	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Record sound	①	②	③	④	⑤			⑧	⑨
23	SOAP	①	②	③	④			⑦	⑧	⑨
23	Self numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Spelling of ordinal numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Sylvester's sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Ulam numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	ASCII art diagram converter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Assertions in design by contract	①	②	③	④	⑤	⑥	⑦			⑩
22	Bilinear interpolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Calkin-Wilf sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Coprime triplets	①	②	③	④	⑤	⑥	⑦			⑩
22	Count how many vowels and consonants occur in a string	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Data Encryption Standard	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Doomsday rule	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Eertree	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	File size distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Halt and catch fire	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Kosaraju	①	②	③	④	⑤	⑥	⑦	⑧
22	Levenshtein distance/Alignment	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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 words	①	②	③	④	⑤	⑥	⑦			⑩
22	Order by pair comparisons	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Perceptron	①	②	③	④	⑤	⑥		⑧		⑩
22	Polynomial synthetic division	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Rare numbers	①	②	③		⑤	⑥		⑧		⑩
22	Reflection/Get source	①	②	③	④	⑤	⑥		⑧	O	⑩
22	Sierpinski arrowhead curve	①	②	③	④	⑤	⑥	⑦		⑨	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
22	Wieferich primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Abelian sandpile model/Identity	①	②	③	④	⑤	⑥		⑧		⑩
21	Arithmetic coding/As a generalized change of radix	①	②	③	④	⑤	⑥	⑦	⑧
21	Bitcoin/public point to address	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Consecutive primes with ascending or descending dfferences	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Elementary cellular automaton/Infinite length	①	②	③	④	⑤	⑥	⑦	⑧
21	Find if a point is within a triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Find minimum number of coins that make a given value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Find words which contains all the vowels	①	②	③	④	⑤	⑥	⑦			⑩
21	Index finite lists of positive integers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Joystick position	①	②	③	④				⑧	O
21	K-d tree	①	②	③	④	⑤	⑥		⑧	⑨
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	N-body problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Palindromic primes	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Pancake numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Sequence: nth number with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Sum data type	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Window management	①	②	③	④	⑤		⑦	⑧	⑨
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	EKG sequence convergence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Erdős-primes	①	②	③	④	⑤	⑥	⑦			⑩
20	Knuth's power tree	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Maximum difference between adjacent elements of list	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	②		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		⑤	⑥	⑦	⑧		⑩
20	Odd squarefree semiprimes	①	②	③	④	⑤	⑥	⑦			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	Palindromic primes in base 16	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	Selective file copy	①	②	③	④	⑤	⑥	⑦			⑩
20	Simulate input/Mouse	①	②	③	④				⑧	⑨
20	Sleeping Beauty problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Sort the letters of string in alphabetical order	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Transportation problem	①	②	③	④	⑤	⑥				⑩
20	Untrusted environment	①	②		④	⑤	⑥	⑦		⑨	⑩
20	Word search	①	②	③	④	⑤	⑥	⑦	⑧
20	Zeckendorf arithmetic	①	②	③	④	⑤	⑥		⑧	⑨
19	Biorhythms	①	②	③	④	⑤	⑥	⑦	⑧		⑩
19	Canonicalize CIDR	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Code segment unload	①	②	③	④		⑥	⑦	⑧		⑩
19	Compiler/virtual machine interpreter	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Draw pixel 2	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Find URI in text	①	②	③	④		⑥	⑦			⑩
19	Find words which contain the most consonants	①	②	③	④	⑤	⑥	⑦			⑩
19	Just in time processing on a character stream	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Matrix digital rain	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Numbers in base-16 representation that cannot be written with decimal digits	①	②	③	④	⑤	⑥	⑦			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	Prime triplets	①	②	③	④	⑤	⑥	⑦			⑩
19	Prime words	①	②	③	④	⑤	⑥	⑦			⑩
19	SQL-based authentication	①	②	③	④	⑤		⑦	⑧	⑨
19	Special factorials	①	②	③	④	⑤	⑥	⑦		⑨	⑩
19	Substring primes	①	②	③	④	⑤	⑥	⑦			⑩
18	Banker's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Concatenate two primes is also prime	①	②	③	④	⑤	⑥	⑦			⑩
18	Cubic Special Primes	①	②	③	④	⑤	⑥	⑦			⑩
18	Find first missing positive	①	②	③	④	⑤	⑥	⑦			⑩
18	Free polyominoes enumeration	①	②	③		⑤	⑥	⑦	⑧
18	Imaginary base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Minimum number of cells after, before, above and below NxN squares	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	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	Positive decimal integers with the digit 1 occurring exactly twice	①	②	③	④	⑤	⑥	⑦			⑩
18	Practical numbers	①	②	③	④	⑤	⑥	⑦	⑧
18	Prime numbers which contain 123	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Primes which contain only one odd digit	①	②	③	④	⑤	⑥	⑦			⑩
18	Proof	①	②		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	②	O	④	⑤	⑥		⑧
18	Separate the house number from the street name	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Snake	①	②	③	④	⑤		⑦		⑨
18	Suffix tree	①	②	③	④	⑤	⑥	⑦	⑧
18	Tarjan	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	The sieve of Sundaram	①	②	③	④	⑤	⑥	⑦	⑧		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
17	Aspect oriented programming	①	②	③	④		⑥	⑦	⑧	⑨
17	Bitmap/Read an image through a pipe	①	②	③	④	⑤			⑧	⑨
17	Chernick's Carmichael numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Compare sorting algorithms' performance	①	②	③		⑤	⑥		⑧	⑨	⑩
17	Compiler/syntax analyzer	①	②	③		⑤	⑥	⑦	⑧	⑨
17	Cyclops numbers	①	②	③	④	⑤	⑥	⑦			⑩
17	Cyclotomic polynomial	①	②	③	④	⑤	⑥	⑦	⑧
17	Geometric algebra	①	②	③	④	⑤	⑥		⑧
17	Getting the number of decimals	①	②	③	④		⑥	⑦	⑧	⑨	⑩
17	HTTPS/Client-authenticated	①	②	③	④	⑤		⑦	⑧	O
17	Jaro-Winkler distance	①	②	③	④	⑤	⑥	⑦	⑧
17	Logistic curve fitting in epidemiology	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Motzkin numbers	①	②	③	④	⑤	⑥	⑦			⑩
17	Numbers whose count of divisors is prime	①	②	③	④	⑤	⑥	⑦			⑩
17	Percolation/Bond percolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Permutations with some identical elements	①	②	③	④	⑤	⑥	⑦			⑩
17	Permuted multiples	①	②	③	④	⑤	⑥	⑦			⑩
17	Primes whose first and last number is 3	①	②	③	④	⑤	⑥	⑦			⑩
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	④	⑤			⑧	⑨
17	Retrieve and search chat history	①	②	③	④	⑤		⑦	⑧	⑨
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	Special neighbor primes	①	②	③	④	⑤	⑥	⑦			⑩
17	Square root by hand	①	②	③	④	⑤	⑥	⑦			⑩
17	Terminal control/Positional read	①	②	③	④	⑤		⑦	⑧	⑨	⑩
17	Unique characters in each string	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Wilson primes of order n	①	②	③	④	⑤	⑥	⑦			⑩
16	Bioinformatics/Subsequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Bitmap/PPM conversion through a pipe	①	②	③	④	⑤			⑧	⑨
16	Compiler/AST interpreter	①	②	③		⑤	⑥	⑦	⑧	⑨
16	Four is the number of letters in the ...	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Generate random numbers without repeating a value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Numerical integration/Adaptive Simpson's method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Print itself	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Reverse the order of lines in a text file while preserving the contents of each line	①	②	③	④	⑤	⑥	⑦			⑩
16	Sine wave	①	②	③	④	⑤	⑥	⑦			⑩
16	Smallest numbers	①	②	③	④	⑤	⑥	⑦			⑩
16	Special pythagorean triplet	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Topological sort/Extracted top item	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	XML validation		②	③	④	⑤		⑦	⑧	⑨
15	Functional coverage tree	①	②	③	④	⑤	⑥	⑦	⑧
15	Gradient descent	①	②	③	④	⑤	⑥	⑦			⑩
15	Harmonic series	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Interactive help	①	②	③	④	⑤	⑥	⑦			⑩
15	Modified random distribution	①	②	③	④	⑤	⑥	⑦	⑧		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	Sierpinski square curve	①	②	③	④	⑤	⑥	⑦
15	Untouchable numbers	①	②	③	④	⑤	⑥	⑦			⑩
15	Word ladder	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Continued fraction/Arithmetic/G(matrix ng, continued fraction n)	①	②	③	④	⑤	⑥		⑧
14	Deconvolution/2D+	①	②	③	④	⑤	⑥	⑦	⑧	⑨
14	Factorial base numbers indexing permutations of a collection	①	②	③	④	⑤	⑥	⑦	⑧
14	Generalised floating point addition	①	②	③	④		⑥	⑦			⑩
14	Legendre prime counting function	①	②	③	④	⑤	⑥	⑦
14	Longest palindromic substrings	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Multi-base primes	①	②	③	④	⑤	⑥				⑩
14	Pisano period	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Run as a daemon or service	①	②		④	⑤			⑧	⑨
14	Sum of primes in odd positions is prime	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		⑥	⑦		⑨	⑩
13	Air mass	①	②	③	④	⑤	⑥	⑦			⑩
13	Canny edge detector	①	②	③		⑤			⑧	⑨
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	Greed	①	②	③	④	⑤		⑦			⑩
13	Juggler sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
13	Launch rocket with countdown and acceleration in stdout	①	②	③	④	⑤	⑥	⑦			⑩
13	Longest substrings without repeating characters	①	②	③	④	⑤	⑥	⑦	⑧		⑩
13	Minimal steps down to 1	①	②	③	④	⑤	⑥	⑦	⑧
13	Non-transitive dice	①	②	③	④	⑤	⑥	⑦	⑧
13	One-time pad	①	②	③	④	⑤	⑥	⑦	⑧
13	Penrose tiling	①	②	③	④	⑤	⑥	⑦
13	Pentomino tiling	①	②	③	④	⑤	⑥	⑦
13	Railway circuit	①	②	③	④	⑤	⑥	⑦
13	Simulated annealing	①	②	③	④	⑤	⑥	⑦
13	Sorting algorithms/Tree sort on a linked list	①	②	③		⑤	⑥			⑨
13	Text completion	①	②	③	④	⑤	⑥	⑦			⑩
13	Three word location	①	②	③	④	⑤	⑥	⑦		⑨
13	Unit testing	①	②	③	④	⑤	⑥				⑩
13	VList	①	②		④	⑤	⑥			⑨	⑩
12	Audio frequency generator	①	②	③		⑤		⑦
12	Catmull–Clark subdivision surface	①	②	③		⑤	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	Distribution of 0 Digits in factorial series	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Execute CopyPasta Language	①	②	③	④	⑤	⑥	⑦	⑧
12	External sort	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Fortunate numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	French Republican calendar	①	②	③	④	⑤	⑥	⑦
12	Geohash	①	②	③	④	⑤	⑥	⑦	⑧
12	Minkowski question-mark function	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Pandigital prime	①	②	③	④		⑥	⑦			⑩
12	Pseudorandom number generator image	①	②	③	④	⑤	⑥	⑦
12	Safe mode	①	②		④		⑥	⑦			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	④	⑤		⑦
12	Using a speech engine to highlight words	①	②	③	④	⑤					⑩
11	Bioinformatics/Global alignment	①	②	③	④	⑤	⑥	⑦	⑧
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	Fibonacci matrix-exponentiation	①	②	③	④	⑤	⑥	⑦
11	Graph colouring	①	②	③	④	⑤	⑥	⑦	⑧
11	Home primes	①	②	③	④	⑤	⑥	⑦			⑩
11	Hourglass puzzle	①	②	③	④	⑤	⑥	⑦	⑧		⑩
11	Powerful numbers	①	②	③	④	⑤	⑥	⑦
11	Quoting constructs	①	②	③	④	⑤	⑥				⑩
11	Range modifications	①	②	③	④	⑤	⑥	⑦	⑧
11	Resistance calculator	①	②	③	④	⑤	⑥	⑦	⑧
11	Square form factorization	①	②	③	④	⑤	⑥	⑦		⑨	⑩
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	Colour pinstripe/Printer	①	②	③	④	⑤			⑧
10	Conjugate a Latin Verb	①		③	④	⑤	⑥	⑦			⑩
10	Elliptic Curve Digital Signature Algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
10	Faces from a mesh	①	②	③	④	⑤	⑥	⑦	⑧
10	Morpion solitaire	①	②	③		⑤				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	Parse EBNF	①	②		④		⑥	⑦
10	Pinstripe/Printer	①	②	③	④	⑤
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/Rank languages by number of users	①	②		④	⑤		⑦	⑧		⑩
10	Rosetta Code/Tasks without examples	①	②		④	⑤		⑦
10	Sort an outline at every level	①	②	③	④	⑤	⑥	⑦	⑧
10	Starting a web browser	①	②	③	④	⑤		⑦
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	Continued fraction/Arithmetic/G(matrix ng, continued fraction n1, continued fraction n2)	①	②	③	④	⑤	⑥
9	Discrete Fourier transform	①	②	③	④	⑤	⑥	⑦
9	Fibonacci heap	①	②	③	④	⑤	⑥		⑧
9	IPC via named pipe		②		④			⑦		⑨
9	Mayan calendar	①	②	③	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	④			⑦
8	Brace expansion using ranges	①	②	③	④	⑤	⑥		⑧
8	Compiler/Verifying syntax	①	②	③	④	⑤		⑦		⑨
8	Doubly-linked list/Element removal	①	②	③	④	⑤	⑥
8	Find Chess960 starting position identifier	①		③	④	⑤	⑥	⑦
8	OpenGL pixel shader	①	②				⑥			⑨
8	Overloaded operators	①			④	⑤	⑥				⑩
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		③	④	⑤	⑥	⑦	⑧
8	Robots	①	②	③	④
8	Smallest enclosing circle problem	①	②	③	④	⑤	⑥		⑧
8	Tamagotchi emulator	①	②	③		⑤	⑥
7	Addition-chain exponentiation	①	②			⑤	⑥			⑨
7	Black Box	①	②	③		⑤	⑥
7	Boids	①	②	③		⑤	⑥			⑨
7	Hexapawn	①	②	③			⑥		⑧
7	I'm a software engineer, get me out of here	①	②	③	④		⑥	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	②		④	⑤	⑥	⑦
7	Raster bars	①	②	③	④	⑤	⑥
7	Recursive descent parser generator	①	②	③	④			⑦
7	Remote agent/Agent logic	①	②	③				⑦		⑨
7	Remote agent/Simulation	①	②	③				⑦		⑨
7	Rosetta Code/Run examples		②		④	⑤
7	Simple turtle graphics	①		③			⑥	⑦	⑧
7	URL shortener		②	③	④				⑧
7	Waveform analysis/Doh ray me	①	②	③	④	⑤	⑥	⑦
7	Wordiff	①		③	④	⑤	⑥		⑧		⑩
6	Audio overlap loop		②	③		⑤
6	Chess player	①	②					⑦	⑧
6	Compiler/Simple file inclusion pre processor	①		③	④		⑥
6	Horse racing	①	②	③	④	⑤	⑥
6	Integer long division	①		③	④	⑤	⑥
6	Remote agent/Agent interface	①	②	③						⑨
6	Solve a Rubik's Cube	①	②	③		⑤	⑥
6	Strassen's algorithm	①	②	③	④	⑤	⑥
5	Generalised floating point multiplication	①	②	③			⑥
5	Number triplets game	①		③			⑥	⑦
5	OLE automation	①	②						⑧
5	P-Adic square roots	①		③		⑤	⑥
5	Particle fountain	①		③	④		⑥	⑦
5	Peripheral drift illusion	①		③	④	⑤	⑥
5	Solving coin problems	①	②	③			⑥	⑦
5	Unicode polynomial equation	①	②	③		⑤	⑥
5	Weather routing	①	②	③		⑤	⑥
5	WiktionaryDumps to words	①		③						⑨
4	Rosetta Code/List authors of task descriptions	①	②		④	⑤
4	Ukkonen’s suffix tree construction	①	②	③			⑥
4	Using the Meetup.com API		②						⑧
4	Waveform analysis/Top and tail	①	②	③		⑤
3	15 puzzle game in 3D		②				⑥
3	B-spline			③			⑥
3	Blackjack strategy	①	②			⑤
3	CLI-based maze-game	①				⑤
3	Elevator simulation	①					⑥
3	Multiton	①		③			⑥
3	Vidir	①			④
2	IRC gateway		②
1	Mine a bitcoin	①
0	Uno (Card Game)