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

As of 2021-11-29T01:12:34Z :: Tasks: 1143 :: Draft Tasks:337 :: Total Tasks: 1480 :: Total Examples: 81944

Count	Task	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
508	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
328	FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
321	100 doors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
298	Fibonacci sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
293	Factorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
280	Comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
271	A+B	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
265	Empty program	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
244	Function definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
237	Loops/Infinite	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
233	Arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
231	Loops/While	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
231	Reverse a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
229	Ackermann function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
217	Loops/For	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
211	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
205	Greatest common divisor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
200	Greatest element of a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
197	Even or odd	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
196	Array concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
189	Averages/Arithmetic mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
189	Integer comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
188	Repeat a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
184	Increment a numerical string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
181	Hello world/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
180	Copy a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
179	Sieve of Eratosthenes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
176	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
173	Loops/Downward for	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
171	Binary digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
170	Character codes	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	Integer sequence	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	String concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
167	Loops/Do-while	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
167	Loops/For with a specified step	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Hello world/Newline omission	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Loops/Foreach	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Loops/N plus one half	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	Rot-13	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
166	String length	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	Palindrome detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
164	Tokenize a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
163	Loops/Break	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
162	Empty string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
162	String case	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
162	Sum of a series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	Generic swap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
159	Leap year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
159	Quine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
158	Dot product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Sum of squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Hailstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Logical operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	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	Caesar cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Factors of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Roman numerals/Encode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
148	Execute a system command	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
147	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	Determine if a string is numeric	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Guess the number	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	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	Bitwise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
142	Luhn test of credit card numbers	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	File input/output	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	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
138	Generate lower case ASCII alphabet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
138	Happy numbers	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	Mutual recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Check that file exists	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	Create a file	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
135	Zero to the zero power	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
133	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	Balanced brackets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Literals/String	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Date format	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	Ethiopian multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Include a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Program termination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Compound data type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Literals/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Binary search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Count in octal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Function composition	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
124	Knuth shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Loops/Nested	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Mandelbrot set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Count occurrences of a substring	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	N-queens problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Roman numerals/Decode	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
121	Case-sensitivity of identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	Null object	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	Haversine formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Matrix multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Pick random element	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Read a file line by line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Identity matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Matrix transposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Multiplication tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Guess the number/With feedback	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Averages/Median	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	File size	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Hash from two arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Letter frequency	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	Delete a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Look-and-say sequence	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	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	Conway's Game of Life	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	HTTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Input loop	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	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	Evaluate binomial coefficients	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	Levenshtein distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	String append	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Horner's rule for polynomial evaluation	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	Strip a set of characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Substring/Top and tail	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	Run-length encoding	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	Comma quibbling	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Harshad or Niven series	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	Bulls and cows	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Nth root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Prime decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Regular expressions	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	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	Combinations	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	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	Create a two-dimensional array at runtime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	N'th	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Ordered words	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	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	Execute Brain****	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	Range expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Create an HTML table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Exponentiation operator	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	Dragon curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Evolutionary algorithm	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	Hofstadter Q sequence	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	Cumulative standard deviation	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	Forward difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Langton's ant	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	Entropy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Gray code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	JSON	①	②	③	④	⑤	⑥	⑦	⑧	⑨
90	Monty Hall problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Calculating the value of e	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Catamorphism	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	Map range	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Menu	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	Compare a list of strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Five weekends	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Greatest subsequential sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Last Friday of each month	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	Floyd's triangle	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	Non-decimal radices/Convert	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	Count in factors	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	Find the last Sunday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Monte Carlo methods	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	Bitmap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Hello world/Line printer	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	Box the compass	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	File modification time	①	②		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	Show ASCII table	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	Anti-primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Here document	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
81	Munchausen numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	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	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	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	Keyboard input/Obtain a Y or N response	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	Call an object method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	O
78	Date manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Find the missing permutation	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	Modular inverse	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	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	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	Equilibrium index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Execute HQ9+	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	Non-decimal radices/Output	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	Fibonacci n-step number sequences	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	Multiple distinct objects	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Read a configuration file	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	Combinations with repetitions	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	Gamma function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Guess the number/With feedback (player)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Jump anywhere	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	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	15 puzzle game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Department numbers	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	Four bit adder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Fractal tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
73	Rep-string	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
73	Thue-Morse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Trabb Pardo–Knuth algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Zeckendorf number representation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Bitmap/Bresenham's line algorithm	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	Extend your language	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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
71	Call a foreign-language function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Draw a sphere	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	IBAN	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
70	100 prisoners	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	Constrained random points on a circle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Fork	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	Maze generation	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	Sort three variables	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	Angle difference between two bearings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Barnsley fern	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	General FizzBuzz	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	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	Chinese remainder theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Euler method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Morse code	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
68	Unix/ls	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Amb	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Circles of given radius through two points	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	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	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	Continued fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Damm algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Documentation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Factors of a Mersenne number	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	Memory allocation	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	Semiprime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Variable size/Get	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Write language name in 3D ASCII	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Best shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Exponentiation order	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	Host introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Modular exponentiation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Probabilistic choice	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	Stern-Brocot sequence	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	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	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	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	Abundant odd numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Binary strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Extract file extension	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	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	Arithmetic evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Bitmap/Write a PPM file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	CUSIP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Cartesian product of two or more lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Dutch national flag problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Emirp primes	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	I before E except after C	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	ISBN13 check digit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Integer overflow	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Magic 8-ball	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Miller–Rabin primality test	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	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	Long year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Longest common prefix	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	Brownian tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Determine if a string has all the same characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Determine if a string is collapsible	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Huffman coding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	JortSort	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	Left factorials	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Leonardo numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Ludic numbers	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	Doubly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Draw a cuboid	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	Matrix-exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
59	Pointers and references	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	Base64 encode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Chinese zodiac	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Grayscale image	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Hash join	①	②	③	④	⑤	⑥	⑦	⑧		⑩
58	Mad Libs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Pascal matrix generation	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	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	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	Kernighans large earthquake problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	LZW compression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	McNuggets problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Munching squares	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	Base64 decode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨
56	Call a function in a shared library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	DNS query	①	②		④	⑤	⑥	⑦	⑧	⑨	⑩
56	Dijkstra's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Draw a pixel	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	FASTA format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Forest fire	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Keyboard input/Keypress check	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Modulinos	①	②	③	④	⑤		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		④	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	Bernoulli numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Copy stdin to stdout	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	Longest common substring	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	Loops/Increment loop index within loop body	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Maximum triangle path sum	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	Sattolo cycle	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	Strip block comments	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	Associative array/Merging	①	②	③	④	⑤	⑥	⑦	⑧		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	Move-to-front algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Nim game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Polynomial regression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Send email	①	②		④	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	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	Cantor set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Chaos game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Colour bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Determinant and permanent	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Determine if a string has all unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Find the intersection of two lines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Fractran	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	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
52	Two identical strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Additive primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Doubly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Egyptian division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Farey sequence	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
50	Days between dates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Doubly-linked list/Traversal	①	②	③	④	⑤	⑥		⑧	⑨	⑩
50	Hofstadter Figure-Figure sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Jaro similarity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Kronecker product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Metaprogramming	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Primality by Wilson's theorem	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	Bell numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Echo server	①	②		④	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	Largest proper divisor of n	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	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	Bitmap/Flood fill	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Determine if a string is squeezable	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Elementary cellular automaton	①	②	③	④	⑤	⑥	⑦	⑧	⑨
48	History variables	①	②	③	④	⑤	⑥	⑦	⑧	O	⑩
48	Image noise	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	Sum of divisors	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	Active object	①	②	③	④	⑤	⑥	⑦	⑧	⑨
47	Average loop length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Bitmap/Read a PPM file	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	Doubly-linked list/Definition	①	②	③	④	⑤	⑥		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	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	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	Currency	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	Flipping bits game	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	Subtractive generator	①	②	③	④	⑤	⑥	⑦	⑧	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	Deepcopy	①	②	③	④	⑤	⑥	⑦	⑧	⑨
45	Fivenum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Hilbert curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
45	Isqrt (integer square root) of X	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Keyboard input/Flush the keyboard buffer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Loops/With multiple ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Mertens function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Perfect totient numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Rosetta Code/Count examples	①	②		④	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	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	Bitmap/Midpoint circle algorithm	①	②	③	④	⑤	⑥		⑧	⑨	⑩
44	Chowla numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	MD5/Implementation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Musical scale	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	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	Brazilian numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Casting out nines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Color of a screen pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Combinations and permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Coprimes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Idiomatically determine all the lowercase and uppercase letters	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	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	Abbreviations, easy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Bioinformatics/base count	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	Colour pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Cramer's rule	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	Julia set	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	Approximate equality	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Base 16 numbers needing a to f	①	②	③	④	⑤	⑥	⑦	⑧		⑩
41	Convex hull	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	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	Read a file character by character/UTF8	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	ABC words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Brace expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Create a file on magnetic tape	①	②	③	④	⑤	⑥		⑧	⑨	⑩
40	Cuban primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Display a linear combination	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	File extension is in extensions list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Humble numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Input/Output for lines of text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Input/Output for pairs of 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	Pathological floating point problems	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Pythagorean quadruples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Sequence: smallest number with exactly n divisors	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	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	Cousin primes	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	Fibonacci word/fractal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Find the intersection of a line with a plane	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	Function prototype	①	②	③	④	⑤	⑥	⑦	O	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	Maze solving	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	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	Find palindromic numbers in both binary and ternary bases	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Frobenius numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Lah numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Bitmap/Bézier curves/Cubic	①	②	③	④	⑤	⑥		⑧	⑨
37	Extra primes	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	Pythagoras tree	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	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	Gauss-Jordan matrix inversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Multi-dimensional array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Nice primes	①	②	③	④	⑤	⑥	⑦		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	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	Strong and weak primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Subset sum problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Bacon cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Chaocipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Circular primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Dice game probabilities	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Diversity prediction theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Entropy/Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Find words which contains more than 3 e vowels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Find words with alternating vowels and consonants	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Length of an arc between two angles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Longest common suffix	①	②	③	④	⑤	⑥	⑦	⑧	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		④	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	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	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	Bitmap/Histogram	①	②	③	④	⑤	⑥		⑧	⑨
34	Check input device is a terminal	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	Create an object at a given address	①	②	③	④	⑤	⑥	⑦	O	⑨
34	Decimal floating point number to binary	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Eban numbers	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	Koch curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨
34	Mersenne primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Modular arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨
34	Multiplicative order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Negative base numbers	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	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/Bézier curves/Quadratic	①	②	③	④	⑤	⑥		⑧	⑨
33	Burrows–Wheeler transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Change e letters to i in words	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	Implicit type conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Long literals, with continuations	①	②	③	④	⑤	⑥	⑦	⑧		⑩
33	Mian-Chowla sequence	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	Sequence: smallest number greater than previous term with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Set of real numbers	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	Terminal control/Preserve screen	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	URL parser	①	②	③	④	⑤	⑥	⑦	⑧
33	Unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Chat server	①	②		④	⑤	⑥	⑦	⑧	⑨
32	Compiler/lexical analyzer	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Death Star	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Find first and last set bit of a long integer	①	②	③	④	⑤		⑦	⑧	⑨	⑩
32	Jacobi symbol	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Keyboard macros	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Law of cosines - triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Minimum number of cells after, before, above and below NxN squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Parallel brute force	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Pragmatic directives	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Rosetta Code/Find unimplemented tasks	①	②		④	⑤	⑥	⑦	⑧
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	Word break problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Alternade words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Bin given limits	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	Chemical calculator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Count how many vowels and consonants occur in a string	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	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	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		④	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	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	Find words which contains all the vowels	①	②	③	④	⑤	⑥	⑦	⑧		⑩
30	Find words whose first and last three letters are equal	①	②	③	④	⑤	⑥	⑦	⑧		⑩
30	Generate random chess position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Kronecker product based fractals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Machine code	①	②	③	④	⑤	⑥		⑧	⑨
30	Magnanimous numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
30	Mayan numerals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Nonoblock	①	②	③	④	⑤	⑥	⑦	⑧	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	Primes with digits in nondecreasing order	①	②	③	④	⑤	⑥	⑦	⑧		⑩
30	Sum and product puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Twin primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
29	Active Directory/Connect	①	②	③	④	⑤		⑦	⑧	⑨
29	Calkin-Wilf sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
29	Common sorted list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Finite state machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Honeycombs	①	②	③	④		⑥	⑦	⑧	⑨
29	Increasing gaps between consecutive Niven numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Möbius function	①	②	③	④	⑤		⑦		⑨	⑩
29	Natural sorting	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Partition function P	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	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	Cut a rectangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Distinct power 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	Fixed length records	①	②	③	④	⑤	⑥	⑦	⑧		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	Image convolution	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Monads/Maybe monad	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	N-smooth numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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	Welch's t-test	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Wieferich primes	①	②	③	④	⑤	⑥	⑦		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 list elements	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Distributed programming	①	②		④	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	Find prime n such that reversed n is also prime	①	②	③	④	⑤	⑥	⑦		⑨	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	Intersecting number wheels	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Merge and aggregate datasets	①	②	③	④	⑤	⑥	⑦	⑧		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	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	Yahoo! search interface	①	②		④	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 minimum number of coins that make a given value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Hough transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	K-means++ clustering	①	②	③	④	⑤	⑥		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	Make a backup file	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	Pseudo-random numbers/PCG32	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	Cistercian numerals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Coprime triplets	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	Find first missing positive	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	List rooted trees	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Markov chain text generator	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Matrix chain multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨
25	Maximum difference between adjacent elements of list	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/Xorshift star	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	Consecutive primes with ascending or descending differences	①	②	③	④	⑤	⑥	⑦	⑧		⑩
24	Doomsday rule	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	File size distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Mastermind	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	Order by pair comparisons	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	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	Bilinear interpolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Create an object/Native demonstration	①	②	③	④	⑤	⑥	⑦	⑧	O
23	Erdős-primes	①	②	③	④	⑤	⑥	⑦			⑩
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	Index finite lists of positive integers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Joystick position	①	②		④	⑤			⑧	⑨
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	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	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	Rare numbers	①	②	③	④		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	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	EKG sequence convergence	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 words which contain the most consonants	①	②	③	④	⑤	⑥	⑦			⑩
22	Generate random numbers without repeating a value	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Kosaraju	①	②	③	④	⑤	⑥	⑦	⑧
22	Line circle intersection	①	②	③	④	⑤	⑥	⑦		⑨	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	N-body problem	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	Pseudo-random numbers/Combined recursive generator MRG32k3a	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	10001th prime	①	②	③		⑤		⑦		⑨
21	Arithmetic coding/As a generalized change of radix	①	②	③	④	⑤	⑥	⑦	⑧
21	Concatenate two primes is also prime	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	Minimum numbers of three lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Names to numbers	①	②	③	④	⑤	⑥	⑦	⑧
21	Next special primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
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	Positive decimal integers with the digit 1 occurring exactly twice	①	②	③	④	⑤	⑥	⑦	⑧		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	Readline interface	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	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
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		④	⑤	⑥	⑦	⑧	⑨
21	Zeckendorf arithmetic	①	②	③	④	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	Longest substrings without repeating characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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		③	④	⑤	⑥	⑦	⑧
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	Pseudo-random numbers/Splitmix64	①	②	③	④	⑤	⑥	⑦	⑧	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
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	Compare length of two strings	①	②	③		⑤	⑥	⑦	⑧	⑨
19	Compiler/virtual machine interpreter	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Cubic Special Primes	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	Find square difference	①	②	③		⑤		⑦	⑧	⑨
19	Getting the number of decimals	①	②	③	④	⑤		⑦	⑧	⑨	⑩
19	HTTPS/Client-authenticated	①	②	③	④	⑤	⑥	⑦	⑧	O
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	Nimber arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Peaceful chess queen armies	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Percolation/Mean cluster density	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Percolation/Site percolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Permuted multiples	①	②	③	④	⑤	⑥	⑦			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	SQL-based authentication	①	②		④	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	Summation of primes	①	②	③	④	⑤		⑦		⑨
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	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	Logistic curve fitting in epidemiology	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Minimum primes	①	②	③	④	⑤	⑥	⑦		⑨
18	NYSIIS	①	②	③	④	⑤	⑥	⑦	⑧		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	Permutations with some identical elements	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Proof	①		③	④	⑤	⑥		O	O
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	Bioinformatics/Subsequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	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	Juggler sequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Largest difference between adjacent primes	①	②	③		⑤		⑦	⑧	⑨
17	Last list item	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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		④	⑤	⑥		⑧	⑨
17	Retrieve and search chat history	①	②		④	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 multiple	①	②	③	④	⑤		⑦	⑧
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	XML validation		②	③	④	⑤	⑥	⑦	⑧	⑨
16	Append numbers at same position in strings	①	②	③		⑤		⑦	⑧	⑨
16	Compiler/AST interpreter	①	②	③	④		⑥	⑦	⑧	⑨
16	Find adjacents primes which difference is square integer	①	②	③		⑤		⑦	⑧	⑨
16	Four is the number of letters in the ...	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Largest prime factor	①	②	③	④	⑤		⑦		⑨
16	Legendre prime counting function	①	②	③	④	⑤	⑥	⑦
16	Longest palindromic substrings	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Modified random distribution	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	Prime numbers p which sum of prime numbers less or equal to p is prime	①	②	③	④	⑤	⑥	⑦			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	Fortunate numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
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	Minimal steps down to 1	①	②	③	④	⑤	⑥	⑦	⑧
15	Multi-base primes	①	②	③	④	⑤	⑥	⑦			⑩
15	Non-transitive dice	①	②	③	④	⑤	⑥	⑦	⑧
15	Odd and square numbers	①	②	③		⑤		⑦	⑧
15	OpenWebNet password	①	②	③	④	⑤	⑥	⑦	⑧
15	SHA-256 Merkle tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Generalised floating point addition	①	②	③	④	⑤		⑦			⑩
14	Geohash	①	②	③	④	⑤	⑥	⑦	⑧
14	Largest palindrome product	①	②	③	④	⑤		⑦	⑧
14	Minkowski question-mark function	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Pandigital prime	①	②	③	④	⑤		⑦			⑩
14	Pisano period	①	②	③	④	⑤	⑥	⑦	⑧		⑩
14	Rodrigues’ rotation formula	①	②	③	④	⑤	⑥	⑦		⑨
14	Run as a daemon or service	①			④	⑤	⑥		⑧	⑨
14	Sorting algorithms/Tree sort on a linked list	①	②	③	④		⑥			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	Unit testing	①	②	③	④	⑤	⑥				⑩
14	XXXX redacted	①	②	③	④	⑤		⑦		⑨	⑩
13	Audio frequency generator	①	②	③	④		⑥	⑦
13	Checksumcolor	①	②	③	④	⑤	⑥	⑦	⑧
13	Curve that touches three points	①	②	③	④	⑤	⑥	⑦
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	Graph colouring	①	②	③	④	⑤	⑥	⑦	⑧
13	Greed	①	②		④	⑤	⑥	⑦			⑩
13	Largest product in a grid	①	②	③	④	⑤		⑦	⑧
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	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	Simulated annealing	①	②	③	④	⑤	⑥	⑦
13	Three word location	①	②	③	④	⑤	⑥	⑦		⑨
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	Faces from a mesh	①	②	③	④	⑤	⑥	⑦	⑧
12	French Republican calendar	①	②	③	④	⑤	⑥	⑦
12	Hourglass puzzle	①	②	③	④	⑤	⑥	⑦	⑧		⑩
12	Long stairs	①	②	③		⑤		⑦	⑧	⑨
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		④			⑦	⑧
12	Time-based one-time password algorithm	①	②		④	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	Determine sentence type	①	②	③	④	⑤		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	Morpion solitaire	①	②		④		⑥	⑦		⑨	⑩
11	Numerical and alphabetical suffixes	①	②	③	④	⑤	⑥	⑦	⑧		⑩
11	Pinstripe/Printer	①	②	③	④	⑤	⑥
11	Polynomial derivative	①	②	③		⑤		⑦
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		④	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
11	What weekdays will Christmas and New Year	①	②	③		⑤		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	Earliest difference between prime gaps	①	②	③		⑤		⑦	⑧
10	Elliptic Curve Digital Signature Algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
10	Euclid-Mullin sequence	①	②	③		⑤		⑦	⑧
10	Find Chess960 starting position identifier	①	②	③	④	⑤	⑥	⑦
10	IPC via named pipe	①			④	⑤		⑦		⑨
10	Magic constant	①	②	③		⑤		⑦
10	Mayan calendar	①	②	③	④	⑤	⑥	⑦
10	OpenGL/Utah Teapot	①	②	③	④	⑤	⑥			⑨
10	Overloaded operators	①		③		⑤	⑥				⑩
10	Parse EBNF	①		③	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			④	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	Doubly-linked list/Element removal	①	②	③	④	⑤	⑥
9	Fibonacci heap	①	②	③	④	⑤	⑥		⑧
9	Hex words	①	②	③		⑤		⑦	⑧
9	Integer long division	①	②	③		⑤	⑥	⑦
9	Jaccard index	①	②	③		⑤		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		④	⑤		⑦
8	Addition-chain exponentiation	①		③	④		⑥			⑨
8	Camel case and snake case	①	②	③		⑤		⑦
8	Euler's constant 0.5772...	①	②	③		⑤		⑦		⑨
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	③		⑤	⑥	⑦	⑧
8	Raster bars	①	②	③	④	⑤	⑥
8	Robots	①	②		④	⑤
8	Rosetta Code/Run examples	①			④	⑤	⑥
8	Round-robin tournament schedule	①	②	③		⑤		⑦
8	Simple turtle graphics	①	②	③				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		④	⑤			⑧
8	Wordiff	①	②	③		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	③		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		④	⑤		⑦
7	Remote agent/Agent logic	①	②		④			⑦		⑨
7	Remote agent/Simulation	①	②		④			⑦		⑨
7	Solve equations with substitution method	①	②	③		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	B-spline	①	②	③		⑤		⑦
6	Compiler/Simple file inclusion pre processor	①	②	③		⑤
6	Create your own text control codes	①	②	③		⑤
6	Numbers which are not the sum of distinct squares	①	②	③		⑤
6	Particle fountain	①	②	③		⑤		⑦
6	Peripheral drift illusion	①	②	③		⑤	⑥	⑦
6	Remote agent/Agent interface	①	②		④					⑨
6	Segmentation fault protection	①	②	③
6	Solve a Rubik's Cube	①	②	③	④		⑥
5	Dominoes	①	②	③				⑦
5	Generalised floating point multiplication	①	②	③	④
5	Number triplets game	①	②	③				⑦
5	OLE automation	①			④				⑧
5	P-Adic square roots	①	②	③			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	③					⑧
4	Multiton	①	②	③		⑤
4	Rosetta Code/List authors of task descriptions	①			④	⑤	⑥
4	Ukkonen’s suffix tree construction	①	②	③	④
4	Using the Meetup.com API				④				⑧
4	Vidir	①		③		⑤
3	CLI-based maze-game	①					⑥
3	Elevator simulation	①		③
3	Uno (Card Game)	①	②						⑧
2	IRC gateway				④
1	Mine a bitcoin	①