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 top 10 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. Ideally it would be nice to be able to generate the table for any language but it is fairly intensive to generate. Once a week is ok, on demand would be unsustainable.

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

Top ten programming languages by number of task examples completed:
① Go
② Phix
③ Julia
④ Raku
⑤ Perl
⑥ Python
⑦ Kotlin
⑧ C
⑨ Java
⑩ Racket

As of 2020-07-26T22:32:31Z :: Tasks: 1012 :: Draft Tasks:198 :: Total Tasks: 1210 :: Total Examples: 64944

Count	Task	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
465	Hello world/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
310	99 Bottles of Beer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
305	100 doors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
301	FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
277	Fibonacci sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
276	Factorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
268	Comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
253	A+B	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
250	Empty program	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
231	Function definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
222	Loops/Infinite	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
220	Reverse a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
218	Arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
216	Loops/While	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
211	Ackermann function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
194	Greatest element of a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
192	Arithmetic/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
184	Array concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
184	Greatest common divisor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
183	Repeat a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
182	Averages/Arithmetic mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
182	Integer comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
180	Boolean values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
179	Increment a numerical string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Even or odd	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Loops/Downward for	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
171	Copy a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
163	Character codes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
162	Apply a callback to an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
161	String concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
160	Loops/Do-while	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
160	Sum and product of an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
159	Hello world/Newline omission	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
159	Loops/For with a specified step	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
158	Binary digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
158	Loops/Foreach	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Loops/Break	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
157	Sieve of Eratosthenes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Array length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	String length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Loops/N plus one half	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
154	Integer sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
154	String case	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
154	Sum of a series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
152	Generic swap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
152	Leap year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
151	Hailstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
151	Tokenize a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Empty string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Logical operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Sum of squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Towers of Hanoi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
148	Dot product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
148	Filter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
148	Rot-13	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Associative array/Creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Sort an integer array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	Caesar cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	Guess the number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
140	Quine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
139	Determine if a string is numeric	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
139	Higher-order functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
138	User input/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Hello world/Standard error	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Roman numerals/Encode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	System time	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Day of the week	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
133	Bitwise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
133	Command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
133	Read entire file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Sorting algorithms/Quicksort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Create a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Loop over multiple arrays simultaneously	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Luhn test of credit card numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Sleep	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Stack	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
128	Check that file exists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
128	Loops/Continue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Literals/String	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Generate lower case ASCII alphabet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Happy numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Least common multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Binary search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Flatten a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	Literals/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Detect division by zero	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Zero to the zero power	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Balanced brackets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Compound data type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Program termination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Associative array/Iteration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Formatted numeric output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Knuth shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Loops/Nested	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	ABC Problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Function composition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Averages/Root mean square	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Null object	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Read a file line by line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	File size	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Mandelbrot set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Classes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Delete a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Ethiopian multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Hash from two arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Search a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Sorting algorithms/Insertion sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Count in octal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Count occurrences of a substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	N-queens problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Guess the number/With feedback	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Roman numerals/Decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	Averages/Median	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	Real constants and functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Environment variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Identity matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Matrix multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Random numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Rename a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	HTTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Matrix transposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Haversine formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Pick random element	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Return multiple values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	String matching	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Align columns	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Babbage problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Accumulator factory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Arithmetic/Complex	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Find limit of recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Letter frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Pangram checker	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Perfect numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Assertions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Conway's Game of Life	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Averages/Pythagorean means	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Catalan numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Horner's rule for polynomial evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Program name	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Infinity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Temperature conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Variadic function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Evaluate binomial coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Levenshtein distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Strip a set of characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Exceptions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Regular expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Arithmetic-geometric mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Nth root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Run-length encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Substring/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Zig-zag matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Combinations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Reverse words in a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	String append	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	String interpolation (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Strip whitespace from a string/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Trigonometric functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Anonymous recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Queue/Definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Short-circuit evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Sorting algorithms/Selection sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Comma quibbling	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Shell one-liner	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Sorting algorithms/Merge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	24 game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Bulls and cows	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Look-and-say sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Ordered words	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Call a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
94	Interactive programming	①	②	③	④	⑤	⑥	⑦		⑨	⑩
93	Collections	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Middle three digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Range extraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Y combinator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Sierpinski triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	String prepend	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Sum multiples of 3 and 5	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Time a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Arbitrary-precision integers (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	First-class functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Power set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Range expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Vector products	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	MD5	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Random number generator (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Sorting algorithms/Gnome sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Sum digits of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Create an HTML table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Cumulative standard deviation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	One-dimensional cellular automata	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Sequence of non-squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Walk a directory/Non-recursively	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Averages/Simple moving average	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Sorting algorithms/Cocktail sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Averages/Mode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Evolutionary algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	N'th	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Entropy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Execute Brain****	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Five weekends	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	JSON	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Langton's ant	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Sierpinski carpet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Sort using a custom comparator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Hamming numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Sorting algorithms/Bogosort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Monty Hall problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Symmetric difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Window creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Abstract type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Dragon curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Greatest subsequential sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Harshad or Niven series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Josephus problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Abundant, deficient and perfect number classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	CSV to HTML translation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	File modification time	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Gray code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Last Friday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	String comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	The Twelve Days of Christmas	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	CSV data manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Menu	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Simple windowed application	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Amicable pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Box the compass	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Map range	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Number names	①	②	③	④	⑤		⑦	⑧	⑨	⑩
80	Sort an array of composite structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Sorting algorithms/Heapsort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Literals/Floating point	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Queue/Usage	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	SEDOLs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Catamorphism	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Hello world/Line printer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Hello world/Newbie	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Monte Carlo methods	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Non-decimal radices/Convert	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Read a specific line from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Singly-linked list/Traversal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Terminal control/Clear the screen	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Count in factors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Floyd's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Number reversal game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Sockets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Sorting algorithms/Shell sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Spiral matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Terminal control/Ringing the terminal bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	URL decoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Walk a directory/Recursively	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	XML/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Calculating the value of e	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Call an object method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Playing cards	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	CRC-32	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Compare a list of strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Concurrent computing	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Date manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Pythagorean triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Roots of unity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Show the epoch	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Bitmap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Dynamic variable names	①	②	③	④	⑤	⑥	⑦			⑩
74	Find the last Sunday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Hofstadter Q sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Knapsack problem/0-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Lucas-Lehmer test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Multifactorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Order two numerical lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Proper divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Top rank per group	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	URL encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Almost prime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Count the coins	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Fibonacci n-step number sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Find common directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Hello world/Web server	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Here document	①	②	③	④	⑤	⑥	⑦	⑧		⑩
73	Soundex	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Strip comments from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Averages/Mean angle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Kaprekar numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Keyboard input/Obtain a Y or N response	①	②	③	④	⑤	⑥	⑦	⑧		⑩
72	List comprehensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Long multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Man or boy test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Sorting algorithms/Counting sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Unicode variable names	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Equilibrium index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Exceptions/Catch an exception thrown in a nested call	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Find the missing permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Gamma function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Linear congruential generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Non-decimal radices/Output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Operator precedence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Semordnilap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Singly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Special characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Take notes on the command line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Word wrap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Empty directory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Repeat	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	SHA-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	SHA-256	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Sorting algorithms/Comb sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Calendar	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Jensen's Device	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Modular inverse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Parsing/RPN calculator algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Phrase reversals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Polymorphism	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Quaternion type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Read a configuration file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Rock-paper-scissors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Sudoku	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Write entire file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Convert seconds to compound duration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	IBAN	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Multiple distinct objects	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Self-describing numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Stair-climbing puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Trabb Pardo–Knuth algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Vigenère cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	AKS test for primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Anagrams/Deranged anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Call a foreign-language function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Enforced immutability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Execute HQ9+	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Flow-control structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Four bit adder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Longest common subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Sorting algorithms/Stooge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Split a character string based on change of character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Write float arrays to a text file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	15 Puzzle Game	①	②	③	④	⑤	⑥	⑦	⑧		⑩
66	Currying	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Draw a sphere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Fork	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Guess the number/With feedback (player)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Sort disjoint sublist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Benford's law	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Catalan numbers/Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Euler's sum of powers conjecture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Horizontal sundial calculations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Magic squares of odd order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Maze generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Munchausen numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Named parameters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Variable size/Get	①	②	③	④	⑤	⑥	⑦	⑧		⑩
65	Zeckendorf number representation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Arithmetic/Rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Closest-pair problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Euler method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Extend your language	①	②	③	④	⑤	⑥	⑦		⑨	⑩
64	Fractal tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Largest int from concatenated ints	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Numerical integration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Population count	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Runtime evaluation	①		③	④	⑤	⑥	⑦		⑨	⑩
63	Combinations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Continued fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Documentation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Sort stability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Special variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Unix/ls	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Van der Corput sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	XML/Output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Fast Fourier transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Hofstadter-Conway $10,000 sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Jump anywhere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Morse code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Narcissistic decimal number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Nested function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Remove lines from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Roots of a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Singly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Strip control codes and extended characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Text processing/Max licenses in use	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Amb	①	②	③	④	⑤	⑥	⑦	⑧		⑩
61	Cholesky decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	HTTPS	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	One of n lines in a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Optional parameters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Pernicious numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Priority queue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Write language name in 3D ASCII	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Barnsley fern	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Chinese remainder theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Factors of a Mersenne number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Memory allocation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Probabilistic choice	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Rep-string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Roots of a quadratic function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Sequence of primes by trial division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Show Ascii table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Undefined values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Arithmetic evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Averages/Mean time of day	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Binary strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Sorting algorithms/Pancake sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Sorting algorithms/Sleep sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	User input/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Circles of given radius through two points	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Draw a clock	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Exponentiation order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	General FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Get system command output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Globally replace text in several files	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Non-decimal radices/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Old lady swallowed a fly	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Partial function application	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Plot coordinate pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Reduced row echelon form	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Runge-Kutta method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Test a function	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Tic-tac-toe	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	24 game/Solve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Animate a pendulum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Generator/Exponential	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Huffman coding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Left factorials	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Miller–Rabin primality test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Modular exponentiation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Mouse position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Semiprime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Sorting algorithms/Bead sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Thue-Morse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Add a variable to a class instance at runtime	①	②	③	④	⑤	⑥	⑦
56	Brownian tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Dutch national flag problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Hash join	①	②	③	④	⑤	⑥	⑦		⑨	⑩
56	JortSort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Knapsack problem/Unbounded	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Knight's tour	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	LZW compression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Stem-and-leaf plot	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Truncatable primes	①	②	③	④	⑤		⑦	⑧	⑨	⑩
56	Unicode strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	XML/XPath	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	9 billion names of God the integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Angle difference between two bearings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Anti-primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Compile-time calculation	①	②	③	④	⑤		⑦	⑧		⑩
55	Deal cards for FreeCell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Define a primitive data type	①	②	③	④	⑤	⑥	⑦		⑨	⑩
55	Department Numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Emirp primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Extreme floating point values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Knapsack problem/Continuous	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Odd word problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Singleton	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Terminal control/Display an extended character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Best shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Delegates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Dinesman's multiple-dwelling problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Fibonacci word	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Forest fire	①	②	③	④	⑤	⑥		⑧	⑨	⑩
54	Integer overflow	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Multisplit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Runtime evaluation/In an environment	①		③	④	⑤	⑥	⑦		⑨	⑩
54	Scope modifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Stack traces	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Topological sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Two Sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Yin and yang	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	4-rings or 4-squares puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨
53	Bitmap/Write a PPM file	①	②	③	④	⑤	⑥	⑦	⑧		⑩
53	Extract file extension	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Leonardo numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Matrix-exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧		⑩
53	Munching squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Random number generator (device)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Send email	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Sort three variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Sorting algorithms/Permutation sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Synchronous concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	CUSIP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Doubly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Draw a cuboid	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Grayscale image	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Handle a signal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	I before E except after C	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Inverted syntax	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Rosetta Code/Rank languages by popularity	①	②	③	④	⑤	⑥	⑦	⑧		⑩
52	Terminal control/Cursor positioning	①	②	③	④	⑤	⑥	⑦			⑩
52	Truncate a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	XML/DOM serialization	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Maximum triangle path sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Modulinos	①	②	③	④	⑤	⑥		⑧	⑨	⑩
51	Sierpinski triangle/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Statistics/Basic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Subleq	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Text processing/2	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Word frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Base64 encode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Bernoulli numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Cartesian product of two or more lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Convert decimal number to rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Dining philosophers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Discordian date	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Quickselect algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Respond to an unknown method call	①	②	③	④	⑤	⑥	⑦			⑩
50	Ternary logic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Unbias a random generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Wireworld	①	②	③	④	⑤	⑥		⑧	⑨	⑩
49	2048	①	②	③	④		⑥	⑦	⑧	⑨	⑩
49	First-class functions/Use numbers analogously	①	②	③	④	⑤	⑥	⑦			⑩
49	Heronian triangles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Keyboard input/Keypress check	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Ludic numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Mad Libs	①	②	③	④	⑤	⑥	⑦		⑨	⑩
49	Seven-sided dice from five-sided dice	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Terminal control/Coloured text	①	②	③	④	⑤	⑥	⑦	⑧		⑩
49	Universal Turing machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Validate International Securities Identification Number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Call a function in a shared library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	FASTA format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Farey sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Longest common prefix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Longest increasing subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Text processing/1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	DNS query	①	②	③	④	⑤		⑦			⑩
47	Dijkstra's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	GUI component interaction	①	②	③	④		⑥	⑦	⑧	⑨	⑩
47	Gaussian elimination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Polynomial regression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Rate counter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Zebra puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Chinese zodiac	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Determine if only one instance is running	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Doubly-linked list/Traversal	①	②	③	④		⑥	⑦	⑧	⑨	⑩
46	Extensible prime generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Fractran	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Greyscale bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Longest string challenge	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Loops/Increment loop index within loop body	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Polymorphic copy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Search a list of records	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Shoelace formula for polygonal area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Smith numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Stable marriage problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Stern-Brocot sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Tokenize a string with escaping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Vector	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Archimedean spiral	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Attractive numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Doubly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Draw a pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Echo server	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Find the intersection of two lines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	History variables	①	②	③	④	⑤	⑥	⑦		⑨	⑩
45	Holidays related to Easter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Make directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Metaprogramming	①	②	③	④	⑤	⑥	⑦	⑧		⑩
45	Naming conventions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
45	Pascal matrix generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Send an unknown method call	①	②	③	④	⑤	⑥	⑦		⑨	⑩
45	Strip block comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Abundant odd numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Append a record to the end of a text file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Bitmap/Flood fill	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Carmichael 3 strong pseudoprimes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Colour bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Jaro distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Last letter-first letter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Perfect shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Pig the dice game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Rosetta Code/Count examples	①	②	③	④	⑤	⑥			⑨	⑩
44	Set consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Bitmap/Read a PPM file	①	②	③	④	⑤	⑥	⑦	⑧		⑩
43	Execute a Markov algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Hofstadter Figure-Figure sequences	①	②	③	④	⑤	⑥		⑧	⑨	⑩
43	Image noise	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Parsing/Shunting-yard algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Password generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Polynomial long division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Sattolo cycle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Sort numbers lexicographically	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Verify distribution uniformity/Naive	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Visualize a tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Average loop length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Base64 decode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Determinant and permanent	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Doubly-linked list/Definition	①	②	③	④		⑥	⑦	⑧	⑨	⑩
42	Element-wise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Generate Chess960 starting position	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Kronecker product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Longest Common Substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	OpenGL	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Percentage difference between images	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Sparkline in unicode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Ulam spiral (for primes)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	100 prisoners	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Atomic updates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Bulls and cows/Player	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Chaos game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Egyptian division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Jewels and Stones	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Keyboard input/Flush the keyboard buffer	①	②	③	④	⑤	⑥	⑦	⑧		⑩
41	MD5/Implementation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	McNuggets Problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Secure temporary file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Spinning rod animation/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Start from a main routine	①	②	③	④	⑤		⑦	⑧		⑩
41	Sum to 100	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Table creation/Postal addresses	①	②	③	④	⑤		⑦	⑧		⑩
41	Twelve statements	①	②	③	④	⑤	⑥	⑦		⑨	⑩
41	Variable size/Set	①	②	③	④	⑤	⑥	⑦	⑧		⑩
40	Calendar - for "REAL" programmers	①	②	③	④	⑤		⑦	⑧		⑩
40	Determine if a string has all the same characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Digital root/Multiplicative digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Elementary cellular automaton	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Fusc sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Hickerson series of almost integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Problem of Apollonius	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Speech synthesis	①	②	③	④	⑤	⑥	⑦	⑧		⑩
40	Subtractive generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Terminal control/Dimensions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
39	Aliquot sequence classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Cantor set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	GUI enabling/disabling of controls	①	②	③	④		⑥	⑦	⑧	⑨	⑩
39	Knapsack problem/Bounded	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Permutations/Derangements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	RPG Attributes Generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	S-Expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Sorting algorithms/Radix sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Sorting algorithms/Strand sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Text between	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Balanced ternary	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Casting out nines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Color of a screen pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Combinations and permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Constrained genericity	①	②	③	④			⑦		⑨	⑩
38	Kernighans large earthquake problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Parallel calculations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Pascal's triangle/Puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Topswops	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	UTF-8 encode and decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Van Eck sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Variable-length quantity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Voronoi diagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Break OO privacy	①	②	③	④	⑤	⑥	⑦		⑨
37	Deepcopy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Flipping bits game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Inverted index	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Knuth's algorithm S	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	LU decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Long year?	①	②	③	④	⑤	⑥	⑦		⑨
37	Nim Game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Parsing/RPN to infix conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Permutations by swapping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Prime conspiracy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Pythagorean quadruples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	QR decomposition	①	②	③	④	⑤	⑥		⑧	⑨	⑩
37	Ray-casting algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Self-referential sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Sort a list of object identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Sorting Algorithms/Circle Sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Statistics/Normal distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Taxicab numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Terminal control/Inverse video	①	②	③	④	⑤	⑥	⑦	⑧		⑩
37	Water collected between towers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Bitmap/Midpoint circle algorithm	①	②	③	④		⑥	⑦			⑩
36	Currency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Determine if a string has all unique characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	Hilbert curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Julia set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Magic squares of doubly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	Permutation test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Primorial numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Terminal control/Hiding the cursor	①	②	③	④	⑤	⑥	⑦	⑧		⑩
36	Vampire number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Abbreviations, automatic	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Bell numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Chowla numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Cramer's rule	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Euler's identity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Events	①	②	③	④	⑤	⑥		⑧		⑩
35	Find palindromic numbers in both binary and ternary bases	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Function prototype	①	②	③	④	⑤		⑦	⑧		⑩
35	Lychrel numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
35	MD4	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Metered concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Minesweeper game	①	②	③	④	⑤	⑥		⑧	⑨	⑩
35	Multiline shebang	①	②	③	④	⑤	⑥		⑧		⑩
35	Musical scale	①	②	③	④	⑤	⑥	⑦	⑧		⑩
35	Numerical integration/Gauss-Legendre Quadrature	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Object serialization	①	②	③	④	⑤	⑥	⑦		⑨	⑩
35	Order disjoint list items	①	②	③	④	⑤	⑥	⑦		⑨	⑩
35	Permutations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Sailors, coconuts and a monkey problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Scope/Function names and labels	①	②	③	④	⑤	⑥	⑦	⑧		⑩
35	Terminal control/Unicode output	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Colour pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Create a file on magnetic tape	①	②	③	④		⑥	⑦	⑧	⑨	⑩
34	Cuban primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Fivenum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Floyd-Warshall algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Input/Output for Pairs of Numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Pathological floating point problems	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Square but not cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Sutherland-Hodgman polygon clipping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Test integerness	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Associative array/Merging	①	②	③	④	⑤	⑥	⑦		⑨
33	Bitwise IO	①	②	③	④	⑤	⑥	⑦	⑧		⑩
33	Brace expansion	①	②	③	④	⑤	⑥	⑦		⑨	⑩
33	Copy stdin to stdout		②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Determine if a string is collapsible	①	②	③	④	⑤	⑥	⑦	⑧	⑨
33	Entropy/Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Executable library	①	②	③	④	⑤	⑥		⑧	⑨	⑩
33	Feigenbaum constant calculation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Input/Output for Lines of Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Kahan summation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Largest number divisible by its digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨
33	MAC Vendor Lookup	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Magic 8-Ball	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Maze solving	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Parametrized SQL statement	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Penney's game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	RIPEMD-160	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Read a file character by character/UTF8	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Square-free integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Totient function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Bitcoin/address validation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Bitmap/Bézier curves/Cubic	①	②	③	④		⑥	⑦	⑧		⑩
32	Check output device is a terminal	①	②	③	④	⑤	⑥	⑦	⑧		⑩
32	Days between dates	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Fibonacci word/fractal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Humble numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Integer roots	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Ordered Partitions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
32	Pythagoras tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Ranking methods	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Rosetta Code/Find bare lang tags	①	②	③	④	⑤			⑧		⑩
32	Substitution Cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Truth table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	URL parser	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	Arithmetic-geometric mean/Calculate Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Conjugate transpose	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Decimal floating point number to binary	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	Egyptian fractions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Find the intersection of a line with a plane	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Galton box animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Gapful numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Long primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Multiple regression	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	Mutex	①	②	③	④	⑤	⑥		⑧	⑨	⑩
31	Parse command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧		⑩
31	RSA code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Recaman's sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Set puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Solve the no connection puzzle	①	②	③	④	⑤	⑥	⑦		⑨	⑩
31	Straddling checkerboard	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Subset sum problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Topic variable	①	②	③	④	⑤	⑥	⑦			⑩
31	Write to Windows event log	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Abbreviations, easy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Abbreviations, simple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Approximate Equality	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Bitmap/Bézier curves/Quadratic	①	②	③	④		⑥	⑦	⑧		⑩
30	Bitmap/Histogram	①	②	③	④		⑥	⑦	⑧	⑨	⑩
30	Brazilian numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
30	Continued fraction/Arithmetic/Construct from rational number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Convex hull	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Keyboard macros	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Metronome	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Multiplicative order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Numeric error propagation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Partition an integer X into N primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Pattern matching	①	②	③	④	⑤		⑦			⑩
30	Pentagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Poker hand analyser	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Reflection/List properties	①	②	③	④	⑤	⑥	⑦		⑨
30	Resistor mesh	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Simple database	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Solve a Hidato puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Terminal control/Cursor movement	①	②	③	④	⑤	⑥	⑦	⑧		⑩
30	The Name Game	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Check Machin-like formulas	①	②	③	④	⑤	⑥	⑦		⑨	⑩
29	Cycle detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Display a linear combination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Execute SNUSP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	First class environments	①	②	③	④	⑤	⑥	⑦	⑧		⑩
29	Loops/Wrong ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Loops/with multiple ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Negative base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Use another language to call a function	①	②		④		⑥	⑦	⑧	⑨	⑩
29	Window creation/X11	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Zhang-Suen thinning algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Chat server	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Compiler/lexical analyzer	①	②	③	④	⑤	⑥		⑧	⑨	⑩
28	Deconvolution/1D	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Determine if a string is squeezable	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	FTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	ISBN13 check digit	①	②	③	④	⑤	⑥	⑦	⑧
28	Idiomatically determine all the lowercase and uppercase letters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Implicit type conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Memory layout of a data structure	①	②	③	④	⑤	⑥	⑦			⑩
28	Mersenne primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Rosetta Code/Find unimplemented tasks	①	②	③	④	⑤					⑩
28	Safe primes and unsafe primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Set of real numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Sorting algorithms/Patience sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Textonyms	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Xiaolin Wu's line algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Apply a digital filter (direct form II transposed)	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Bacon cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Chaocipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Cheryl's Birthday	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Church Numerals	①	②	③	④	⑤	⑥			⑨	⑩
27	Death Star	①	②	③	④	⑤	⑥		⑧	⑨	⑩
27	Eban numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Find first and last set bit of a long integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Formal power series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	HTTPS/Authenticated	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Jacobi symbol	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Koch curve	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Multi-dimensional array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Palindrome dates	①	②	③	④	⑤	⑥		⑧	⑨
27	Parallel Brute Force	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Perfect totient numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Pragmatic directives	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Rosetta Code/Fix code tags	①	②	③	④	⑤	⑥			⑨	⑩
27	Sequence: smallest number greater than previous term with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Sequence: smallest number with exactly n divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Sorting algorithms/Cycle sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	State name puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Update a configuration file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Verify distribution uniformity/Chi-squared test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Arena storage pool	①	②	③	④		⑥	⑦	⑧		⑩
26	Decision tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Dice game probabilities	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Distributed programming	①		③	④	⑤	⑥		⑧		⑩
26	Faulhaber's formula	①	②	③	④	⑤		⑦	⑧	⑨	⑩
26	Faulhaber's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Find largest left truncatable prime in a given base	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Honeycombs	①	②	③		⑤	⑥	⑦	⑧	⑨	⑩
26	Mian-Chowla sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Modular arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Nautical bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Paraffins	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Ramsey's theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Reflection/List methods	①	②	③	④	⑤	⑥	⑦		⑨
26	Safe addition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Same Fringe	①	②	③	④	⑤	⑥		⑧	⑨	⑩
26	Strong and weak primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Superellipse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Table creation	①	②	③	④		⑥		⑧		⑩
25	AVL tree	①	②	③	④		⑥	⑦	⑧	⑨
25	Chemical Calculator	①	②	③	④	⑤	⑥	⑦		⑨	⑩
25	Create an object at a given address	①	②	③	④			⑦	⑧		⑩
25	Factorions	①	②	③	④	⑤	⑥		⑧	⑨	⑩
25	Law of cosines - triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨
25	Old Russian measure of length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Polyspiral	①	②	③	④		⑥	⑦	⑧	⑨	⑩
25	Smarandache prime-digital sequence	①	②	③	④	⑤	⑥		⑧	⑨
25	Sum and Product Puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	The ISAAC Cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Thiele's interpolation formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Word break problem	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Birthday problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Card shuffles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Determine if two triangles overlap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Fairshare between two and more	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Lah numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Plasma effect	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	RCRPG	①	②	③	④	⑤	⑥		⑧	⑨	⑩
24	Sequence of primorial primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Sexy primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Simulate input/Keyboard	①			④	⑤	⑥	⑦	⑧	⑨	⑩
24	Solve a Holy Knight's tour	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Type detection	①	②	③	④	⑤		⑦	⑧		⑩
24	Weird numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Welch's t-test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Yahoo! search interface	①			④	⑤	⑥	⑦		⑨	⑩
23	Burrows–Wheeler transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Chebyshev coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Draw a rotating cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Fermat numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	First perfect square in base N with N unique digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Four is magic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Fraction reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Generate random chess position	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Hough transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	K-means++ clustering	①	②	③	④		⑥	⑦	⑧		⑩
23	Kronecker product based fractals	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Machine code	①	②	③	④		⑥	⑦	⑧		⑩
23	Main step of GOST 28147-89	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Make a backup file	①	②	③	④	⑤	⑥	⑦		⑨	⑩
23	Play recorded sounds	①	②	③			⑥				⑩
23	Ramer-Douglas-Peucker line simplification	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Record sound	①	②	③	④		⑥	⑦	⑧		⑩
23	SOAP	①	②	③	④	⑤	⑥	⑦	⑧
23	Sierpinski pentagon	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Stream Merge	①	②	③	④	⑤		⑦	⑧	⑨	⑩
23	Zumkeller numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	A* search algorithm	①	②	③	④		⑥	⑦	⑧	⑨	⑩
22	Base58Check encoding	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Cipolla's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Deming's Funnel	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Diversity prediction theorem	①	②	③	④	⑤	⑥	⑦	⑧
22	First power of 2 that has leading decimal digits of 12	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Function frequency	①	②	③	④	⑤	⑥		⑧		⑩
22	Idiomatically determine all the characters that can be used for symbols	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Linux CPU utilization	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Magic squares of singly even order	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Markov chain text generator	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Pell's equation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Percolation/Mean run density	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Permutations/Rank of a permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Range consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Reverse the gender of a string	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Superpermutation minimisation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Teacup rim text	①	②	③	④	⑤	⑥		⑧	⑨
22	Tonelli-Shanks algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Total circles area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	World Cup group stage	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Active Directory/Search for a user	①	②		④		⑥		⑧	⑨
21	AudioAlarm	①	②	③			⑥	⑦		⑨	⑩
21	Color wheel	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Create an object/Native demonstration	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Cut a rectangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Elementary cellular automaton/Random Number Generator	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Fixed length records	①	②	③	④	⑤	⑥
21	Intersecting Number Wheels	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Nonoblock	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Palindromic gapful numbers	①	②	③	④		⑥		⑧	⑨
21	Parse an IP Address	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Peano curve	①	②	③	④	⑤	⑥		⑧	⑨	⑩
21	Pig the dice game/Player	①	②	③	④	⑤	⑥			⑨	⑩
21	Playfair cipher	①	②	③	④	⑤	⑥	⑦		⑨
21	Spelling of ordinal numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Stirling numbers of the second kind	①	②	③	④	⑤	⑥		⑧	⑨
21	Successive prime differences	①	②	③	④	⑤	⑥	⑦		⑨
21	Video display modes	①	②	③	④	⑤	⑥	⑦
21	Window management	①	②	③	④	⑤	⑥		⑧	⑨	⑩
20	21 Game	①	②	③	④	⑤	⑥		⑧	⑨	⑩
20	Abelian sandpile model	①	②	③	④	⑤	⑥		⑧	⑨
20	Addition chains	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Angles (geometric), normalization and conversion	①	②	③	④	⑤	⑥		⑧	⑨
20	Commatizing numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Elliptic curve arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Joystick position	①	②	③	④		⑥
20	Median filter	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Monads/Maybe monad	①	②	③	④			⑦			⑩
20	N-smooth numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Native shebang	①	②	③	④	⑤	⑥		⑧		⑩
20	Numeric separator syntax	①	②	③	④	⑤	⑥		⑧	⑨	⑩
20	Shortest common supersequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Snake And Ladder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Sokoban	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Solve a Hopido puzzle	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Solve a Numbrix puzzle	①	②		④	⑤	⑥	⑦		⑨	⑩
20	Stirling numbers of the first kind	①	②	③	④	⑤	⑥		⑧	⑨
20	Super-d numbers	①	②	③	④	⑤	⑥	⑦		⑨
20	Unprimeable numbers	①	②	③	④	⑤	⑥		⑧	⑨
20	Yellowstone sequence	①	②	③	④	⑤	⑥			⑨
19	Bilinear interpolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Data Encryption Standard	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Find duplicate files	①	②	③	④	⑤	⑥			⑨	⑩
19	Finite state machine	①	②	③	④		⑥	⑦	⑧	⑨	⑩
19	Hunt The Wumpus	①	②	③	④		⑥			⑨	⑩
19	Lucky and even lucky numbers	①	②	③	④	⑤	⑥	⑦		⑨
19	Mastermind	①	②	③	④	⑤	⑥	⑦
19	Mind boggling card trick	①	②	③	④	⑤	⑥	⑦
19	N-body problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Orbital elements	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Pierpont primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨
19	Readline interface	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Reflection/Get source	①	②	③	④		⑥	⑦		⑨
19	Simulate input/Mouse	①		③	④		⑥	⑦	⑧	⑨	⑩
18	Circular primes	①	②	③	④	⑤		⑦	⑧	⑨
18	Code segment unload	①	②	③	④	⑤	⑥	⑦		⑨	⑩
18	Color quantization	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Eertree	①	②	③	④	⑤	⑥	⑦		⑨	⑩
18	Gauss-Jordan matrix inversion	①	②	③	④	⑤		⑦		⑨	⑩
18	K-d tree	①	②	③	④		⑥	⑦	⑧	⑨	⑩
18	Kolakoski sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Magnanimous numbers	①	②	③	④	⑤			⑧	⑨
18	Monads/List monad	①	②	③	④	⑤		⑦			⑩
18	Random Latin Squares	①	②	③	④	⑤	⑥	⑦		⑨
18	SQL-based authentication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Selective File Copy	①	②	③	④	⑤		⑦		⑨	⑩
18	Sunflower fractal	①	②	③	④	⑤	⑥		⑧		⑩
18	Untrusted environment	①	②		④	⑤		⑦	⑧		⑩
18	Vigenère cipher/Cryptanalysis	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Arithmetic coding/As a generalized change of radix	①	②	③	④	⑤	⑥	⑦		⑨
17	Assertions in design by contract	①	②	③	④			⑦		⑨	⑩
17	Bitcoin/public point to address	①	②	③	④	⑤	⑥		⑧		⑩
17	Compiler/code generator	①	②	③	④	⑤	⑥		⑧	⑨
17	De Bruijn sequences	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	EKG sequence convergence	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Elementary cellular automaton/Infinite length	①	②	③	④	⑤	⑥	⑦			⑩
17	Index finite lists of positive integers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Just in time processing on a character stream	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Kosaraju	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Levenshtein distance/Alignment	①	②	③	④	⑤		⑦	⑧	⑨	⑩
17	List rooted trees	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Mertens function	①	②	③	④	⑤			⑧	⑨
17	Montgomery reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Names to numbers	①	②	③	④	⑤	⑥	⑦			⑩
17	P-value correction	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Perceptron	①	②	③			⑥	⑦		⑨	⑩
17	Percolation/Site percolation	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Primes - allocate descendants to their ancestors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Print debugging statement	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Separate the house number from the street name	①	②	③	④	⑤	⑥	⑦			⑩
17	Solve triangle solitare puzzle	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Sum data type	①	②	③	④	⑤			⑧	⑨
17	Zeckendorf arithmetic	①	②	③	④		⑥	⑦	⑧	⑨	⑩
16	Aspect Oriented Programming	①	②	③	④	⑤	⑥	⑦	⑧	⑨
16	Bioinformatics/Sequence mutation	①	②	③	④	⑤	⑥		⑧	⑨	⑩
16	Bioinformatics/base count	①	②	③	④	⑤	⑥		⑧		⑩
16	Compiler/syntax analyzer	①	②	③		⑤	⑥		⑧	⑨
16	Compiler/virtual machine interpreter	①	②	③	④	⑤	⑥		⑧
16	Esthetic numbers	①	②	③	④	⑤		⑦	⑧
16	File size distribution	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Find URI in text	①	②	③	④			⑦			⑩
16	HTTPS/Client-authenticated	①	②	③	④	⑤	⑥	⑦			⑩
16	Imaginary base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
16	Increasing gaps between consecutive Niven numbers	①	②	③	④	⑤			⑧	⑨
16	Knuth's power tree	①	②	③	④	⑤	⑥	⑦		⑨	⑩
16	Most frequent k chars distance	①	②		④	⑤	⑥	⑦		⑨	⑩
16	Particle Swarm Optimization	①	②	③	④	⑤	⑥	⑦		⑨	⑩
16	Polynomial synthetic division	①	②	③	④	⑤	⑥	⑦		⑨	⑩
16	Primality by Wilson's theorem	①	②	③	④	⑤	⑥		⑧	⑨
16	Self-hosting compiler	①	②		④		⑥	⑦
16	Sorting algorithms/Cocktail sort with shifting bounds	①	②	③	④				⑧	⑨
16	Vogel's approximation method	①	②	③	④		⑥	⑦	⑧	⑨	⑩
16	Word search	①	②	③	④	⑤	⑥	⑦		⑨	⑩
15	Bitmap/Read an image through a pipe	①		③	④		⑥	⑦	⑧		⑩
15	Draw pixel 2	①	②	③	④	⑤		⑦	⑧		⑩
15	Free polyominoes enumeration	①	②	③			⑥	⑦		⑨	⑩
15	Geometric algebra	①	②	③	④		⑥	⑦		⑨
15	Length of an arc between two angles	①	②	③	④	⑤		⑦	⑧
15	Matrix Digital Rain	①	②	③	④	⑤	⑥		⑧		⑩
15	Minimum positive multiple in base 10 using only 0 and 1	①	②	③	④	⑤			⑧	⑨
15	NYSIIS	①	②	③	④	⑤	⑥	⑦		⑨	⑩
15	Nested templated data	①	②	③	④	⑤	⑥				⑩
15	Next highest int from digits	①	②	③	④	⑤	⑥		⑧	⑨
15	Nonogram solver	①	②	③		⑤	⑥	⑦		⑨	⑩
15	Percolation/Bond percolation	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Percolation/Mean cluster density	①	②	③	④	⑤	⑥	⑦	⑧		⑩
15	Rendezvous	①	②	③	④				⑧		⑩
15	Retrieve and search chat history	①	②	③	④				⑧		⑩
15	Suffix tree	①	②	③	④	⑤	⑥	⑦		⑨	⑩
15	Terminal control/Positional read	①	②	③	④		⑥	⑦	⑧		⑩
15	Transportation problem	①	②	③	④			⑦		⑨	⑩
15	Word wheel	①	②	③	④	⑤	⑥		⑧
14	Matrix chain multiplication	①	②	③	④	⑤		⑦	⑧	⑨
14	Mayan numerals	①	②	③	④	⑤	⑥			⑨
14	Numerical integration/Adaptive Simpson's method	①	②	③	④	⑤	⑥	⑦	⑧	⑨
14	Peaceful chess queen armies	①	②	③	④	⑤	⑥	⑦	⑧	⑨
14	Proof	①	②								⑩
14	Vibrating rectangles	①	②	③	④	⑤	⑥		⑧		⑩
13	Bitmap/PPM conversion through a pipe	①		③	④		⑥	⑦	⑧		⑩
13	Compare sorting algorithms' performance	①	②	③			⑥	⑦	⑧
13	Compiler/AST interpreter	①	②	③		⑤	⑥		⑧	⑨
13	Cyclotomic Polynomial	①	②	③	④	⑤	⑥	⑦		⑨
13	Four is the number of letters in the ...	①	②	③	④	⑤	⑥	⑦	⑧	⑨
13	Functional coverage tree	①	②	③	④	⑤	⑥	⑦			⑩
13	Generalised floating point addition	①	②	③	④	⑤		⑦		⑨	⑩
13	Isqrt (integer square root) of X	①	②	③	④
13	Latin Squares in reduced form	①	②	③	④		⑥	⑦		⑨
13	Metallic ratios	①	②	③	④	⑤	⑥	⑦		⑨
13	Möbius function	①	②	③	④	⑤				⑨
13	Permutations with some identical elements	①	②	③	④	⑤
13	Sequence: nth number with exactly n divisors	①	②	③	④	⑤	⑥	⑦		⑨
13	Singly-linked list/Element removal	①	②	③	④			⑦	⑧		⑩
13	Snake	①	②	③	④	⑤		⑦		⑨
13	Tarjan	①	②	③	④	⑤	⑥	⑦			⑩
13	Topological sort/Extracted top item	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
13	XML Validation	①			④	⑤	⑥	⑦	⑧	⑨
12	Banker's algorithm	①	②	③	④	⑤		⑦	⑧		⑩
12	Canonicalize CIDR	①	②	③	④	⑤	⑥		⑧
12	Chernick's Carmichael numbers	①	②	③	④	⑤			⑧	⑨
12	Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N)	①	②	③	④		⑥	⑦			⑩
12	Deconvolution/2D+	①	②	③	④	⑤	⑥		⑧
12	OpenWebNet Password	①	②	③	④	⑤	⑥	⑦			⑩
12	Pisano period	①	②	③	④	⑤	⑥			⑨
12	Ramanujan's constant	①	②	③	④	⑤	⑥			⑨
12	Rare numbers	①	②	③				⑦		⑨
12	Remove vowels from a string	①	②	③	④		⑥
12	Sine wave	①	②	③	④	⑤		⑦			⑩
11	ASCII art diagram converter	①	②	③	④	⑤				⑨	⑩
11	Abelian sandpile model/Identity	①	②	③	④		⑥
11	Canny edge detector	①	②	③			⑥		⑧
11	Gradient descent	①	②	③	④	⑤					⑩
11	Line circle intersection	①	②	③	④	⑤		⑦	⑧
11	Longest common suffix	①	②	③	④	⑤
11	Safe mode	①	②		④	⑤
11	Simulated annealing	①	②	③	④	⑤					⑩
11	Sorting algorithms/Tree sort on a linked list	①	②	③				⑦	⑧	⑨	⑩
11	UPC	①	②	③	④	⑤
11	VList	①	②		④			⑦	⑧		⑩
10	Audio frequency generator	①	②	③		⑤
10	Execute CopyPasta Language	①	②	③	④	⑤	⑥			⑨
10	External sort	①	②	③	④	⑤	⑥
10	Factorial base numbers indexing permutations of a collection	①	②	③	④	⑤	⑥
10	Interactive Help	①	②	③	④	⑤					⑩
10	Logistic Curve Fitting in Epidemiology	①	②	③	④	⑤	⑥		⑧
10	Nimber arithmetic	①	②	③	④				⑧	⑨
10	Penrose tiling	①	②	③	④	⑤		⑦		⑨	⑩
10	Railway circuit	①	②	③	④			⑦		⑨	⑩
10	Run as a daemon or service	①			④		⑥		⑧		⑩
10	Sierpinski arrowhead curve	①	②	③	④	⑤			⑧
10	Sierpinski curve	①	②	③	④	⑤				⑨
10	Sierpinski square curve	①	②	③	④	⑤				⑨
10	Spoof game	①	②	③	④	⑤		⑦	⑧
10	Tetris	①	②	③						⑨
10	Twin Prime Conjecture	①	②	③	④					⑨
9	Catmull–Clark subdivision surface	①		③			⑥		⑧
9	Colour pinstripe/Printer	①	②	③	④		⑥				⑩
9	Combinations with repetitions/Square Digit Chain	①	②	③	④	⑤		⑦
9	Fibonacci matrix-exponentiation	①	②	③	④	⑤				⑨
9	French Republican calendar	①	②	③	④	⑤		⑦
9	Geohash	①	②	③	④		⑥
9	Greed	①	②	③				⑦		⑨
9	Launch rocket with countdown and acceleration in stdout	①	②	③	④	⑤					⑩
9	Morpion solitaire	①	②	③					⑧	⑨	⑩
9	Parse EBNF	①	②		④	⑤
9	Pentomino tiling	①	②	③				⑦		⑨	⑩
9	Pinstripe/Printer	①	②	③	④						⑩
9	Print itself	①	②		④
9	Resistance Calculator	①	②	③	④	⑤	⑥
9	Starting a web browser	①	②	③	④	⑤					⑩
9	Suffixation of decimal numbers	①	②	③	④	⑤	⑥
9	Time-based One-time Password Algorithm	①		③	④						⑩
9	Using a Speech engine to highlight words	①	②
8	Checksumcolor	①	②	③	④	⑤
8	Faces from a mesh	①	②	③	④	⑤	⑥
8	Long literals, with continuations	①	②	③	④
8	Minimal steps down to 1	①	②	③	④		⑥			⑨
8	Numerical and alphabetical suffixes	①	②	③	④		⑥
8	One-time pad	①	②	③	④			⑦		⑨	⑩
8	Powerful numbers	①	②	③	④	⑤				⑨
8	Three word location	①	②	③	④				⑧
8	Unit testing	①		③	④						⑩
8	User defined pipe and redirection operators	①	②		④	⑤					⑩
7	16 Puzzle Game	①	②	③		⑤
7	Compiler/Verifying Syntax	①	②	③	④	⑤			⑧
7	Curve that touches three points	①	②	③	④	⑤
7	Display an outline as a nested table	①	②	③	④	⑤
7	Fibonacci heap	①	②	③	④		⑥	⑦
7	IPC via named pipe	①							⑧		⑩
7	Multidimensional Newton-Raphson method	①	②	③	④			⑦
7	Quoting constructs	①	②	③	④
7	Resistance Network Calculator	①	②	③	④	⑤	⑥
7	Robots	①	②	③	④			⑦		⑨
7	Rosetta Code/Rank languages by number of users	①	②		④	⑤					⑩
7	Tree datastructures	①	②	③	④	⑤	⑥
7	XXXX redacted	①	②	③	④	⑤
6	Elliptic Curve Digital Signature Algorithm	①	②	③	④				⑧
6	Graph colouring	①	②	③	④		⑥
6	Mayan calendar	①	②	③	④	⑤
6	OpenGL Pixel Shader	①						⑦	⑧		⑩
6	OpenGL/Utah Teapot	①	②					⑦	⑧
6	Recursive descent parser generator	①	②	③	④
6	Rosetta Code/Run examples	①			④
6	Rosetta Code/Tasks without examples	①	②		④	⑤
6	Text to HTML	①	②		④						⑩
5	Addition-chain exponentiation	①	②						⑧		⑩
5	Black Box	①	②	③
5	Boids	①	②	③					⑧	⑨
5	Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2)	①			④			⑦
5	Hexapawn	①	②	③
5	Raster bars	①	②	③	④
5	Remote agent/Agent interface	①		③					⑧
5	Remote agent/Agent logic	①		③					⑧
5	Remote agent/Simulation	①		③					⑧
5	Solve a Rubik's Cube	①	②	③				⑦
5	Terminal control/Restricted width positional input/No wrapping	①	②		④			⑦
5	Terminal control/Restricted width positional input/With wrapping	①	②		④			⑦
5	URL shortener	①		③	④
4	Audio Overlap Loop	①		③
4	Chess player	①	②				⑥
4	Generalised floating point multiplication	①	②	③
4	I'm a software engineer, get me out of here	①	②	③
4	OLE Automation	①					⑥
4	Process SMIL directives in XML data	①	②		④
4	Tamagotchi emulator	①
4	Using the Meetup.com API	①					⑥			⑨
4	Waveform analysis/Doh ray me	①	②	③	④
4	Weather Routing	①	②	③
3	Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique	①	②
3	Rosetta Code/List authors of task descriptions	①	②		④
3	Solving coin problems	①	②			⑤
3	Unicode polynomial equation	①	②	③
3	Vidir		②		④
2	15 Puzzle Game in 3D	①
2	CLI-based maze-game		②
2	IRC gateway	①
2	Waveform analysis/Top and tail	①		③
1	Blackjack strategy	①
1	Create DWM statusbar
1	Ukkonen’s Suffix Tree Construction	①