Rosetta Code/Count examples/Full list

Full output for the Rosetta Code/Count examples#Perl_6 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 Perl 6
④ Julia
⑤ Perl
⑥ Python
⑦ Kotlin
⑧ Racket
⑨ Java
⑩ Zkl

As of 2020-03-08T21:57:51Z :: Tasks: 1014 :: Draft Tasks:223 :: Total Tasks: 1237 :: Total Examples: 66596

Count	Task	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
449	Hello world/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
307	99 Bottles of Beer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
300	100 doors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
295	FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
271	Fibonacci sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
269	Factorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
260	Comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
248	A+B	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
240	Empty program	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
228	Function definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
217	Loops/Infinite	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
212	Loops/While	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
212	Reverse a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
211	Arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
209	Ackermann function	①	②	③	④	⑤	⑥	⑦	⑧	⑨
197	Loops/For	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
192	Greatest element of a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
191	Conditional structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
187	Arithmetic/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
181	Greatest common divisor	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
180	Array concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
180	Averages/Arithmetic mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Integer comparison	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
178	Repeat a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
176	Boolean values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
173	Increment a numerical string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
172	Loops/Downward for	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
170	Even or odd	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
170	Hello world/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
168	Copy a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
160	Apply a callback to an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
160	Character codes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
158	Hello world/Newline omission	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Loops/Foreach	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
156	Sum and product of an array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	Loops/Do-while	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	String concatenation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
155	String length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
153	Binary digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
153	Loops/For with a specified step	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
153	Sieve of Eratosthenes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
152	Sum of a series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
151	Loops/Break	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
151	Loops/N plus one half	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Palindrome detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	String case	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
150	Towers of Hanoi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
149	Array length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
149	Generic swap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
149	Integer sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
147	Leap year	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
147	Logical operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
146	Sum of squares	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Empty string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Filter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Hailstone sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
145	Tokenize a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	Dot product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
144	Rot-13	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
141	Associative array/Creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
141	Execute a system command	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
139	Sort an integer array	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
138	Sorting algorithms/Bubble sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
137	Determine if a string is numeric	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
137	Quine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
137	User input/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Caesar cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Factors of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	File input/output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Guess the number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
136	Higher-order functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
135	Remove duplicate elements	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
134	Hello world/Standard error	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Command-line arguments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
132	Roman numerals/Encode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Bitwise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	Read entire file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
131	System time	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
130	Create a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Day of the week	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
129	Primality by trial division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
128	Stack	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Check that file exists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Loop over multiple arrays simultaneously	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
127	Sorting algorithms/Quicksort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Loops/Continue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
126	Sleep	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
125	Substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Luhn test of credit card numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
124	Pascal's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Literals/String	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
123	Mutual recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
122	Include a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
121	Least common multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Generate lower case ASCII alphabet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
120	Happy numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
119	Literals/Integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Balanced brackets	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Detect division by zero	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Flatten a list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
118	Variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Compound data type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
117	Date format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Knuth shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Loops/Nested	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
116	Program termination	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
115	Formatted numeric output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Associative array/Iteration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Binary search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	File size	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Function composition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
114	Null object	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	Zero to the zero power	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	ABC Problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Classes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Hash from two arrays	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
113	Read a file line by line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Averages/Root mean square	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
112	Mandelbrot set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	Hostname	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
111	N-queens problem	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	Averages/Median	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Delete a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Ethiopian multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Guess the number/With feedback	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
110	Sorting algorithms/Insertion sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Case-sensitivity of identifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Environment variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Input loop	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Matrix multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Matrix transposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Multiplication tables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
109	Rename a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Count in octal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Count occurrences of a substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	HTTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Identity matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Random numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
108	Roman numerals/Decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
107	Pick random element	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
106	Babbage problem	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	String matching	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Arithmetic/Complex	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Haversine formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Pangram checker	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Perfect numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
105	Return multiple values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Accumulator factory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
104	Assertions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Align columns	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
103	Averages/Pythagorean means	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Horner's rule for polynomial evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
102	Infinity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Catalan numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Conway's Game of Life	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Program name	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Temperature conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
101	Variadic function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Evaluate binomial coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Exceptions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Regular expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
100	Run-length encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Arithmetic-geometric mean	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Letter frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Nth root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
99	Zig-zag matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Combinations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Substring/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
98	Trigonometric functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Prime decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	String interpolation (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Strip a set of characters from a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
97	Strip whitespace from a string/Top and tail	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Anonymous recursion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Queue/Definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
96	Reverse words in a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	24 game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Levenshtein distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Shell one-liner	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Short-circuit evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
95	Sorting algorithms/Selection sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Bulls and cows	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Collections	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Comma quibbling	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	Enumerations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
93	String append	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Call a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Look-and-say sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Range extraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Sierpinski triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
92	Sorting algorithms/Merge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Create a two-dimensional array at runtime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Interactive programming	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Middle three digits	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
91	Ordered words	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	Y combinator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	First-class functions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	One-dimensional cellular automata	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Sum multiples of 3 and 5	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
90	Time a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	Arbitrary-precision integers (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
89	MD5	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
88	Create an HTML table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Inheritance/Single	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Random number generator (included)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Sum digits of an integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
88	Walk a directory/Non-recursively	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Averages/Mode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Cumulative standard deviation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Evolutionary algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	String prepend	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
87	Vector products	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
86	Averages/Simple moving average	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
86	Sorting algorithms/Gnome sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Five weekends	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
85	Sorting algorithms/Cocktail sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Forward difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
84	Langton's ant	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	Sierpinski carpet	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Entropy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Execute Brain****	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Hamming numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	JSON	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Symmetric difference	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
83	Window creation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
82	Abstract type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Dragon curve	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	Greatest subsequential sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Harshad or Niven series	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	N'th	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
82	Sorting algorithms/Bogosort	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	Abundant, deficient and perfect number classifications	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	CSV to HTML translation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Menu	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
81	Price fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Gray code	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Josephus problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
80	Number names	①	②	③	④	⑤		⑦	⑧	⑨	⑩
79	Amicable pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
79	Last Friday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Box the compass	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Closures/Value capture	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Hello world/Line printer	①	②	③	④	⑤	⑥	⑦	⑧	⑨
78	Literals/Floating point	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Map range	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Queue/Usage	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Simple windowed application	①	②	③	④	⑤	⑥	⑦	⑧	⑨
78	Sorting algorithms/Heapsort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Tree traversal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
78	Web scraping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Catamorphism	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	Monte Carlo methods	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	Read a specific line from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	SEDOLs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Singly-linked list/Traversal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Sort an array of composite structures	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	Spiral matrix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
77	String comparison	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	Count in factors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Non-decimal radices/Convert	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	Terminal control/Ringing the terminal bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
76	URL decoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Call an object method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Playing cards	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Show the epoch	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
75	Sorting algorithms/Shell sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Bitmap	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	Pythagorean triples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Roots of unity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Sockets	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
74	Terminal control/Clear the screen	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	Address of a variable	①	②	③	④	⑤	⑥	⑦	⑧	⑨
73	Concurrent computing	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	Dynamic variable names	①	②	③	④	⑤	⑥	⑦	⑧		⑩
73	Find common directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
73	Knapsack problem/0-1	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	Almost prime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	CRC-32	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Date manipulation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Hello world/Newbie	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Kaprekar numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Lucas-Lehmer test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Order two numerical lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Proper divisors	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
72	Soundex	①	②	③	④	⑤	⑥	⑦	⑧	⑨
71	Compare a list of strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Fibonacci n-step number sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
71	Man or boy test	①	②	③	④	⑤	⑥	⑦	⑧	⑨
71	Sorting algorithms/Counting sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Averages/Mean angle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Exceptions/Catch an exception thrown in a nested call	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Find the last Sunday of each month	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Find the missing permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Gamma function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Hello world/Web server	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Here document	①	②	③	④	⑤	⑥	⑦	⑧		⑩
70	Keyboard input/Obtain a Y or N response	①	②	③	④	⑤	⑥	⑦	⑧
70	Linear congruential generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	List comprehensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Long multiplication	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Singly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Special characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
70	Unicode variable names	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Bitmap/Bresenham's line algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Calculating the value of e	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Empty directory	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Equilibrium index	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	Multifactorial	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
69	Non-decimal radices/Output	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	Polymorphism	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	Take notes on the command line	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Calendar	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	IBAN	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Modular inverse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Rock-paper-scissors	①	②	③	④	⑤	⑥	⑦	⑧	⑨
68	Sorting algorithms/Comb sort	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	Sudoku	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Word wrap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
68	Write entire file	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	Longest common subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Multiple distinct objects	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Quaternion type	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Semordnilap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
67	Vigenère cipher	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	Anagrams/Deranged anagrams	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Animation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
66	Call a foreign-language function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Convert seconds to compound duration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Four bit adder	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Operator precedence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Phrase reversals	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	SHA-256	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Sorting algorithms/Stooge sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
66	Trabb Pardo–Knuth algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Enforced immutability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Guess the number/With feedback (player)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	SHA-1	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
65	Split a character string based on change of character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	15 Puzzle Game	①	②	③	④	⑤	⑥	⑦	⑧
64	Catalan numbers/Pascal's triangle	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	Currying	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Magic squares of odd order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Maze generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Named parameters	①	②	③	④	⑤	⑥	⑦	⑧	⑨
64	Numerical integration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Runtime evaluation	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Self-describing numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Sort disjoint sublist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
64	Variable size/Get	①	②	③	④	⑤	⑥	⑦	⑧		⑩
63	AKS test for primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Constrained random points on a circle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Euler method	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Fork	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Horizontal sundial calculations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Largest int from concatenated ints	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Munchausen numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Repeat	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	XML/Output	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
63	Zeckendorf number representation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Arithmetic/Rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Benford's law	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Combinations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Euler's sum of powers conjecture	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	Inheritance/Multiple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Morse code	①	②	③	④	⑤	⑥	⑦	⑧	⑨
62	Sort stability	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
62	Special variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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
62	Van der Corput sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Continued fraction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Draw a sphere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Fractal tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	HTTPS	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Narcissistic decimal number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Nested function	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	Remove lines from a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Roots of a function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
61	Singly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Cholesky decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Documentation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
60	Extend your language	①	②	③	④	⑤	⑥	⑦	⑧	⑨
60	Jump anywhere	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Memory allocation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Pernicious numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Priority queue	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Probabilistic choice	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	Undefined values	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Unix/ls	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
60	Write language name in 3D ASCII	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Amb	①	②	③	④	⑤	⑥	⑦	⑧		⑩
59	Chinese remainder theorem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Fast Fourier transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
59	Host introspection	①	②	③	④	⑤	⑥	⑦	⑧	⑨
59	Population count	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
58	Arithmetic evaluation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Barnsley fern	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
58	Factors of a Mersenne number	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	Old lady swallowed a fly	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	Sorting algorithms/Sleep sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Animate a pendulum	①	②	③	④	⑤	⑥	⑦	⑧	⑨
57	Circles of given radius through two points	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	General FizzBuzz	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Huffman coding	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	Non-decimal radices/Input	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Partial function application	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Plot coordinate pairs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Reduced row echelon form	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Rep-string	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
57	Test a function	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	24 game/Solve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Averages/Mean time of day	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Draw a clock	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Get system command output	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	LZW compression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
56	Sequence of primes by trial division	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	XML/XPath	①		③	④	⑤	⑥	⑦	⑧	⑨
55	Add a variable to a class instance at runtime	①	②	③	④	⑤	⑥	⑦			⑩
55	Binary strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Brownian tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Deal cards for FreeCell	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Forest fire	①	②	③	④	⑤	⑥		⑧	⑨
55	Generator/Exponential	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Hash join	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	Left factorials	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Modular exponentiation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Semiprime	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Thue-Morse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
55	Tic-tac-toe	①	②	③	④	⑤	⑥	⑦	⑧	⑨
55	Unicode strings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Compile-time calculation	①	②	③	④	⑤		⑦	⑧		⑩
54	Dutch national flag problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Emirp primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Extreme floating point values	①	②	③	④	⑤	⑥	⑦	⑧	⑨
54	Fibonacci word	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Knight's tour	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Mouse position	①	②	③	④	⑤	⑥	⑦	⑧	⑨
54	Odd word problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Scope modifiers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Singleton	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Sorting algorithms/Bead sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
54	Stack traces	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	4-rings or 4-squares puzzle	①	②	③	④	⑤	⑥	⑦		⑨	⑩
53	Best shuffle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Define a primitive data type	①	②	③	④	⑤	⑥	⑦	⑧	⑨
53	Delegates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Dinesman's multiple-dwelling problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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	Runtime evaluation/In an environment	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Send email	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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
53	Terminal control/Display an extended character	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	Two Sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
53	User input/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨
52	Angle difference between two bearings	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Bitmap/Write a PPM file	①	②	③	④	⑤	⑥	⑦	⑧		⑩
52	Draw a cuboid	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Exponentiation order	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	Matrix-exponentiation operator	①	②	③	④	⑤	⑥	⑦	⑧
52	Multisplit	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Pointers and references	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	Sort three variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
52	Truncatable primes	①	②	③	④	⑤		⑦	⑧	⑨	⑩
52	Truncate a file	①	②	③	④	⑤	⑥	⑦	⑧	⑨
52	XML/DOM serialization	①	②	③	④	⑤	⑥	⑦	⑧	⑨
52	Yin and yang	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	9 billion names of God the integer	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Doubly-linked list/Element definition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Extract file extension	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Handle a signal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Integer overflow	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Iterated digits squaring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Modulinos	①	②	③	④	⑤	⑥		⑧	⑨
51	Statistics/Basic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
51	Topological sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Bernoulli numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Department Numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Dining philosophers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Grayscale image	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Inverted syntax	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	JortSort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Leonardo numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Maximum triangle path sum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
50	Non-continuous subsequences	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
49	Anti-primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Convert decimal number to rational	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	First-class functions/Use numbers analogously	①	②	③	④	⑤	⑥	⑦	⑧		⑩
49	Ludic numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Mad Libs	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Seven-sided dice from five-sided dice	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Sierpinski triangle/Graphical	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
49	Terminal control/Cursor positioning	①	②	③	④	⑤	⑥	⑦	⑧		⑩
49	Ternary logic	①	②	③	④	⑤	⑥	⑦	⑧	⑨
49	Wireworld	①	②	③	④	⑤	⑥		⑧	⑨
48	CUSIP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Cartesian product of two or more lists	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	FASTA format	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Heronian triangles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Keyboard input/Keypress check	①	②	③	④	⑤	⑥	⑦	⑧	⑨
48	Longest increasing subsequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Quickselect algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Respond to an unknown method call	①	②	③	④	⑤	⑥	⑦	⑧		⑩
48	Show Ascii table	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
48	Universal Turing machine	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	2048	①	②	③	④		⑥	⑦	⑧	⑨
47	Base64 encode data	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	DNS query	①	②	③	④	⑤		⑦	⑧		⑩
47	Farey sequence	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Subleq	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Text processing/2	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
47	Zebra puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Call a function in a shared library	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Dijkstra's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Discordian date	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Fractran	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Gaussian elimination	①	②	③	④	⑤	⑥	⑦	⑧		⑩
46	Greyscale bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Move-to-front algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Polymorphic copy	①	②	③	④	⑤	⑥	⑦	⑧	⑨
46	Polynomial regression	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
46	Rate counter	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	Text processing/1	①	②	③	④	⑤	⑥	⑦	⑧	⑨
46	Tokenize a string with escaping	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Determine if only one instance is running	①	②	③	④	⑤	⑥	⑦	⑧	⑨
45	Doubly-linked list/Traversal	①	②	③	④		⑥	⑦	⑧	⑨	⑩
45	GUI component interaction	①	②	③	④		⑥	⑦	⑧	⑨
45	Longest common prefix	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Longest string challenge	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Pascal matrix generation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Search a list of records	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Strip block comments	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Validate International Securities Identification Number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
45	Word frequency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Archimedean spiral	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Doubly-linked list/Element insertion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Echo server	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Extensible prime generator	①	②	③	④	⑤	⑥	⑦	⑧		⑩
44	Holidays related to Easter	①	②	③	④	⑤	⑥	⑦	⑧	⑨
44	Last letter-first letter	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Make directory path	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Metaprogramming	①	②	③	④	⑤	⑥	⑦	⑧		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		⑧	⑨	⑩
44	Send an unknown method call	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Shoelace formula for polygonal area	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
44	Terminal control/Coloured text	①	②	③	④	⑤	⑥	⑦	⑧		⑩
44	Vector	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Execute a Markov algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
43	Find the intersection of two lines	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
43	Naming conventions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
43	Parsing/Shunting-yard algorithm	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	Set consolidation	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
42	Append a record to the end of a text file	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Bitmap/Read a PPM file	①	②	③	④	⑤	⑥	⑦	⑧		⑩
42	Chinese zodiac	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Determinant and permanent	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	History variables	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	OpenGL	①	②	③	④	⑤	⑥	⑦	⑧	⑨
42	Password generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Sattolo cycle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
42	Visualize a tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Abundant odd numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Active object	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Atomic updates	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Attractive numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Average loop length	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Bitmap/Flood fill	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Carmichael 3 strong pseudoprimes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Chaos game	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Colour bars/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
41	Doubly-linked list/Definition	①	②	③	④		⑥	⑦	⑧	⑨	⑩
41	Element-wise operations	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Jaro distance	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Kronecker product	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Loops/Increment loop index within loop body	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	MD5/Implementation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
41	Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
41	Percentage difference between images	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	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	⑧	⑨	⑩
41	Variable size/Set	①	②	③	④	⑤	⑥	⑦	⑧		⑩
40	Bulls and cows/Player	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Calendar - for "REAL" programmers	①	②	③	④	⑤		⑦	⑧		⑩
40	Digital root/Multiplicative digital root	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Egyptian division	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	Sparkline in unicode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Subtractive generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
40	Ulam spiral (for primes)	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Draw a pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨
39	Hickerson series of almost integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Keyboard input/Flush the keyboard buffer	①	②	③	④	⑤	⑥	⑦	⑧
39	Knapsack problem/Bounded	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	McNuggets Problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
39	Parametric polymorphism	①	②	③	④			⑦	⑧	⑨
39	Permutations/Derangements	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	Start from a main routine	①	②	③	④	⑤		⑦	⑧		⑩
38	Base64 decode data	①	②	③	④	⑤	⑥	⑦		⑨	⑩
38	Combinations and permutations	①	②	③	④	⑤	⑥	⑦	⑧	⑨
38	GUI enabling/disabling of controls	①	②	③	④		⑥	⑦	⑧	⑨
38	Jewels and Stones	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	Sorting algorithms/Radix sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Speech synthesis	①	②	③	④	⑤	⑥	⑦	⑧
38	Terminal control/Dimensions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
38	Topswops	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
38	Voronoi diagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Cantor set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Color of a screen pixel	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Constrained genericity	①	②	③	④			⑦	⑧	⑨	⑩
37	Damm algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Elementary cellular automaton	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	GUI/Maximum window dimensions	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Inverted index	①	②	③	④	⑤	⑥	⑦	⑧	⑨
37	Longest Common Substring	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Parallel calculations	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	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	Taxicab numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Text between	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
37	Variable-length quantity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Aliquot sequence classifications	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Balanced ternary	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	Break OO privacy	①	②	③	④	⑤	⑥	⑦		⑨	⑩
36	Deepcopy	①	②	③	④	⑤	⑥	⑦	⑧
36	Knuth's algorithm S	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	LU decomposition	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Magic squares of doubly even order	①	②	③	④	⑤	⑥	⑦		⑨	⑩
36	Permutation test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Pythagorean quadruples	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	S-Expressions	①	②	③	④	⑤	⑥	⑦	⑧	⑨
36	Statistics/Normal distribution	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
36	Vampire number	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Bitmap/Midpoint circle algorithm	①	②	③	④		⑥	⑦	⑧		⑩
35	Casting out nines	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Cramer's rule	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	MD4	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Multiline shebang	①	②	③	④	⑤	⑥		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	⑧	⑨	⑩
35	Order disjoint list items	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Permutations with repetitions	①	②	③	④	⑤	⑥	⑦	⑧	⑨
35	Primorial numbers	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	Spinning rod animation/Text	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
35	Water collected between towers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Colour pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
34	Floyd-Warshall algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Fusc sequence	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	Julia set	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Kernighans large earthquake problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Metered concurrency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	Minesweeper game	①	②	③	④	⑤	⑥		⑧	⑨
34	Musical scale	①	②	③		⑤	⑥	⑦	⑧
34	Pathological floating point problems	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	Terminal control/Inverse video	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Terminal control/Unicode output	①	②	③	④	⑤	⑥	⑦	⑧		⑩
34	Test integerness	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
34	UTF-8 encode and decode	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Abbreviations, automatic	①	②	③	④	⑤	⑥	⑦		⑨	⑩
33	Bitwise IO	①	②	③	④	⑤	⑥	⑦	⑧		⑩
33	Chowla numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
33	Currency	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	File extension is in extensions list	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Flipping bits game	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Lychrel numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Maze solving	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	Prime conspiracy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	RIPEMD-160	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	RPG Attributes Generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
33	Scope/Function names and labels	①	②	③	④	⑤	⑥	⑦	⑧		⑩
33	Terminal control/Hiding the cursor	①	②	③	④	⑤	⑥	⑦	⑧		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	Fibonacci word/fractal	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Ordered Partitions	①	②	③	④	⑤	⑥	⑦	⑧		⑩
32	Parametrized SQL statement	①	②	③	④	⑤	⑥	⑦	⑧	⑨
32	Pinstripe/Display	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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	Sort numbers lexicographically	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
32	Sorting Algorithms/Circle Sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
31	Arithmetic-geometric mean/Calculate Pi	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	Executable library	①	②	③	④	⑤	⑥		⑧	⑨	⑩
31	Feigenbaum constant calculation	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
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	Pythagoras tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	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		⑨	⑩
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	⑧	⑨	⑩
31	Sort a list of object identifiers	①	②	③	④	⑤	⑥	⑦	⑧	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	⑧		⑩
31	Truth table	①	②	③	④	⑤	⑥	⑦	⑧	⑨
31	URL parser	①	②	③	④	⑤	⑥	⑦	⑧	⑨
30	100 prisoners	①	②	③	④	⑤	⑥		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	Brace expansion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Check output device is a terminal	①		③	④	⑤	⑥	⑦	⑧		⑩
30	Conjugate transpose	①	②	③	④	⑤	⑥	⑦	⑧
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	Create a file on magnetic tape	①	②	③	④		⑥	⑦	⑧	⑨
30	Cuban primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Entropy/Narcissist	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Hilbert curve	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Integer roots	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	MAC Vendor Lookup	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Metronome	①	②	③	④	⑤	⑥	⑦	⑧	⑨
30	Multiplicative order	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Pentagram	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Read a file character by character/UTF8	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
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
30	Solve a Hidato puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	Substitution Cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
30	The Name Game	①	②	③	④	⑤	⑥	⑦		⑨	⑩
30	Van Eck sequence	①	②	③	④	⑤	⑥		⑧	⑨	⑩
30	Write to Windows event log	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Check Machin-like formulas	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Copy stdin to stdout	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Decimal floating point number to binary	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Determine if a string has all the same characters	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Egyptian fractions	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Euler's identity	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Fivenum	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Keyboard macros	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Multiple regression	①	②	③	④		⑥	⑦	⑧		⑩
29	Nim Game	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Numeric error propagation	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Pattern matching	①	②	③	④	⑤		⑦	⑧
29	Poker hand analyser	①	②	③	④	⑤	⑥	⑦	⑧	⑨
29	Reflection/List properties	①	②	③	④	⑤	⑥	⑦		⑨	⑩
29	Totient function	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
29	Use another language to call a function	①	②	③			⑥	⑦	⑧	⑨	⑩
29	Zhang-Suen thinning algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	Bell numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
28	Checkpoint synchronization	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Cycle detection	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Deconvolution/1D	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Execute SNUSP	①	②	③	④	⑤	⑥	⑦	⑧	⑨
28	FTP	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	First class environments	①	②	③	④	⑤	⑥	⑦	⑧		⑩
28	Memory layout of a data structure	①	②	③	④	⑤	⑥	⑦	⑧
28	Negative base numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Rosetta Code/Find unimplemented tasks	①	②	③	④	⑤			⑧		⑩
28	Set of real numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Square-free integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
28	Terminal control/Preserve screen	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
27	Abbreviations, easy	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Days between dates	①	②	③	④	⑤	⑥	⑦		⑨	⑩
27	Death Star	①	②	③	④	⑤	⑥		⑧	⑨
27	Display a linear combination	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	Idiomatically determine all the lowercase and uppercase letters	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Implicit type conversion	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Largest number divisible by its digits	①	②	③	④	⑤	⑥	⑦		⑨	⑩
27	Magic 8-Ball	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Partition an integer X into N primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Pragmatic directives	①	②	③	④	⑤	⑥	⑦	⑧
27	Rosetta Code/Fix code tags	①	②	③	④	⑤	⑥		⑧	⑨	⑩
27	Sorting algorithms/Patience sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Terminal control/Cursor movement	①	②	③	④	⑤	⑥	⑦	⑧		⑩
27	Update a configuration file	①	②	③	④	⑤	⑥	⑦	⑧	⑨
27	Verify distribution uniformity/Chi-squared test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
27	Window creation/X11	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Abbreviations, simple	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Active Directory/Connect	①		③		⑤	⑥	⑦	⑧	⑨
26	Apply a digital filter (direct form II transposed)	①	②	③	④	⑤	⑥	⑦		⑨	⑩
26	Approximate Equality	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Arena storage pool	①	②	③	④		⑥	⑦	⑧		⑩
26	Chat server	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Cheryl's Birthday	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Church Numerals	①	②	③	④	⑤	⑥		⑧	⑨	⑩
26	Distributed programming	①		③	④	⑤	⑥		⑧
26	Find first and last set bit of a long integer	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	HTTPS/Authenticated	①	②	③	④	⑤	⑥	⑦	⑧		⑩
26	Long primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Mian-Chowla sequence	①	②	③	④	⑤	⑥	⑦		⑨
26	Modular arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Multi-dimensional array	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Nautical bell	①	②	③	④	⑤	⑥	⑦	⑧	⑨
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
26	Reflection/List methods	①	②	③	④	⑤	⑥	⑦		⑨	⑩
26	Safe addition	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	Safe primes and unsafe primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
26	Sorting algorithms/Cycle sort	①	②	③	④	⑤	⑥	⑦	⑧	⑨
26	State name puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
26	Table creation	①	②	③	④		⑥		⑧
25	Bacon cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Brazilian numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
25	Chaocipher	①	②	③	④	⑤	⑥	⑦		⑨	⑩
25	Check input device is a terminal	①		③	④	⑤	⑥	⑦	⑧		⑩
25	Create an object at a given address	①	②	③	④			⑦	⑧
25	Faulhaber's formula	①	②	③	④	⑤		⑦	⑧	⑨	⑩
25	Faulhaber's triangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Go Fish	①	②	③	④		⑥	⑦	⑧	⑨
25	Honeycombs	①	②		④	⑤	⑥	⑦	⑧	⑨
25	Image convolution	①	②	③	④	⑤	⑥	⑦	⑧	⑨
25	Loops/Wrong ranges	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Mersenne primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
25	Natural sorting	①	②	③	④	⑤	⑥	⑦	⑧		⑩
25	Old Russian measure of length	①	②	③	④	⑤	⑥	⑦	⑧	⑨
25	Perfect totient numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Polyspiral	①	②	③	④		⑥	⑦	⑧	⑨	⑩
25	Same Fringe	①	②	③	④	⑤	⑥		⑧	⑨	⑩
25	Superellipse	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	Textonyms	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
25	The ISAAC Cipher	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	AVL tree	①	②	③	④		⑥	⑦		⑨
24	Determine if a string has all unique characters	①	②	③	④	⑤	⑥			⑨	⑩
24	Eban numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Humble numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Loops/with multiple ranges	①	②	③	④	⑤	⑥	⑦		⑨	⑩
24	Parallel Brute Force	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	RCRPG	①	②	③	④	⑤	⑥		⑧	⑨
24	Sequence of primorial primes	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
24	Simulate input/Keyboard	①		③		⑤	⑥	⑦	⑧	⑨
24	Solve a Holy Knight's tour	①	②	③	④	⑤	⑥	⑦	⑧	⑨
24	Sum and Product Puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Card shuffles	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Compiler/lexical analyzer	①	②	③	④	⑤	⑥		⑧	⑨
23	Decision tables	①	②	③	④	⑤	⑥	⑦	⑧
23	Determine if two triangles overlap	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Hough transform	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	K-means++ clustering	①	②	③	④		⑥	⑦	⑧
23	Koch curve	①	②	③	④	⑤	⑥	⑦	⑧		⑩
23	Make a backup file	①	②	③	④	⑤	⑥	⑦	⑧	⑨
23	Record sound	①	②	③	④		⑥	⑦	⑧
23	SOAP	①	②	③	④	⑤	⑥	⑦
23	Stream Merge	①	②	③	④	⑤		⑦	⑧	⑨
23	Strong and weak primes	①	②	③	④	⑤	⑥			⑨	⑩
23	Thiele's interpolation formula	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
23	Type detection	①	②	③	④	⑤		⑦	⑧		⑩
23	Welch's t-test	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Associative array/Merging	①	②	③	④	⑤	⑥			⑨	⑩
22	Base58Check encoding	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Birthday problem	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Chebyshev coefficients	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Determine if a string is collapsible	①	②	③	④	⑤	⑥	⑦			⑩
22	Dice game probabilities	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Draw a rotating cube	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Function frequency	①	②	③	④	⑤	⑥		⑧
22	Kronecker product based fractals	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Machine code	①	②		④		⑥	⑦	⑧
22	Magic squares of singly even order	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Main step of GOST 28147-89	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Percolation/Mean run density	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	Perlin noise	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Permutations/Rank of a permutation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Plasma effect	①	②	③	④	⑤	⑥	⑦	⑧	⑨
22	Play recorded sounds	①	②				⑥		⑧
22	Sequence: smallest number greater than previous term with exactly n divisors	①	②	③	④	⑤	⑥	⑦		⑨	⑩
22	Superpermutation minimisation	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	Word break problem	①	②	③	④	⑤	⑥	⑦	⑧		⑩
22	World Cup group stage	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
22	Yahoo! search interface	①		③		⑤	⑥	⑦	⑧	⑨
22	Zumkeller numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Chemical Calculator	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Cipolla's algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Create an object/Native demonstration	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Cut a rectangle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Deming's Funnel	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	Gapful numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Generate random chess position	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Idiomatically determine all the characters that can be used for symbols	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Law of cosines - triples	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Linux CPU utilization	①	②	③	④	⑤	⑥	⑦	⑧		⑩
21	Markov chain text generator	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Nonoblock	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Parse an IP Address	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Pig the dice game/Player	①	②	③	④	⑤	⑥		⑧	⑨
21	Playfair cipher	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Ramer-Douglas-Peucker line simplification	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Reverse the gender of a string	①	②	③	④	⑤	⑥	⑦	⑧	⑨
21	Sequence: smallest number with exactly n divisors	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Solve a Numbrix puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Tonelli-Shanks algorithm	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
21	Video display modes	①	②	③	④	⑤	⑥	⑦
21	Weird numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
21	Window management	①	②	③	④	⑤	⑥		⑧	⑨
20	A* search algorithm	①	②		④		⑥	⑦	⑧	⑨	⑩
20	Active Directory/Search for a user	①		③			⑥			⑨
20	AudioAlarm	①	②				⑥	⑦	⑧	⑨	⑩
20	Burrows–Wheeler transform	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Diversity prediction theorem	①	②	③	④	⑤	⑥	⑦			⑩
20	Elliptic curve arithmetic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	First perfect square in base N with N unique digits	①	②	③	④	⑤	⑥				⑩
20	Four is magic	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
20	Intersecting Number Wheels	①	②	③	④	⑤	⑥	⑦		⑨	⑩
20	Median filter	①	②	③	④	⑤	⑥	⑦	⑧		⑩
20	Native shebang	①	②	③	④	⑤	⑥		⑧		⑩
20	Sokoban	①	②	③	④	⑤	⑥	⑦	⑧	⑨
20	Solve a Hopido puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Addition chains	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Bilinear interpolation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Joystick position	①		③	④		⑥
19	Lucky and even lucky numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
19	Monads/Maybe monad	①	②	③	④			⑦	⑧		⑩
19	N-body problem	①	②	③	④	⑤	⑥	⑦		⑨
19	Numeric separator syntax	①	②	③	④	⑤	⑥		⑧	⑨	⑩
19	Orbital elements	①	②	③	④	⑤	⑥	⑦		⑨	⑩
19	Pell's equation	①	②	③	④	⑤	⑥	⑦		⑨	⑩
19	Reflection/Get source	①	②	③	④		⑥	⑦		⑨	⑩
19	Sexy primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
19	Sierpinski pentagon	①		③	④	⑤	⑥	⑦	⑧	⑨	⑩
19	Simulate input/Mouse	①		③	④		⑥	⑦	⑧	⑨
19	Snake And Ladder	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Color quantization	①	②	③	④	⑤	⑥	⑦	⑧
18	Commatizing numbers	①	②	③	④	⑤	⑥	⑦	⑧	⑨
18	Data Encryption Standard	①	②	③	④		⑥	⑦		⑨
18	Determine if a string is squeezable	①	②	③	④	⑤	⑥				⑩
18	Eertree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Fixed length records	①	②	③	④	⑤	⑥				⑩
18	Fraction reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Jacobi symbol	①	②	③	④	⑤	⑥	⑦		⑨	⑩
18	Mastermind	①	②	③	④	⑤	⑥	⑦			⑩
18	Mind boggling card trick	①	②	③	④	⑤	⑥	⑦			⑩
18	Range consolidation	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
18	Selective File Copy	①	②	③	④	⑤		⑦	⑧	⑨	⑩
18	Shortest common supersequence	①	②	③	④	⑤	⑥	⑦	⑧		⑩
18	Successive prime differences	①	②	③	④	⑤	⑥			⑨	⑩
18	Vigenère cipher/Cryptanalysis	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Angles (geometric), normalization and conversion	①	②	③	④	⑤	⑥				⑩
17	Arithmetic coding/As a generalized change of radix	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Assertions in design by contract	①	②	③	④			⑦	⑧	⑨	⑩
17	Bitcoin/public point to address	①	②	③	④	⑤	⑥		⑧		⑩
17	Code segment unload	①	②	③	④	⑤	⑥	⑦	⑧	⑨
17	Elementary cellular automaton/Infinite length	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	Find duplicate files	①	②	③	④	⑤	⑥		⑧		⑩
17	Hunt The Wumpus	①	②	③	④		⑥		⑧	⑨
17	I.Q. Puzzle	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Index finite lists of positive integers	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	K-d tree	①	②	③	④		⑥	⑦	⑧		⑩
17	Kolakoski sequence	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Kosaraju	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
17	Lah numbers	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	Long year?	①	②	③	④	⑤	⑥			⑨	⑩
17	Monads/List monad	①	②	③	④	⑤		⑦	⑧		⑩
17	Names to numbers	①	②	③	④	⑤	⑥	⑦	⑧		⑩
17	P-value correction	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Palindrome dates	①	②	③	④	⑤	⑥			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	Readline interface	①	②	③	④	⑤		⑦	⑧	⑨
17	SQL-based authentication	①		③	④	⑤	⑥	⑦	⑧	⑨
17	Smarandache prime-digital sequence	①	②	③	④	⑤	⑥			⑨	⑩
17	Sunflower fractal	①	②	③	④	⑤	⑥		⑧		⑩
17	Super-d numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
17	Untrusted environment	①	②	③		⑤		⑦	⑧		⑩
17	Zeckendorf arithmetic	①	②	③	④		⑥	⑦	⑧	⑨
16	Aspect Oriented Programming	①	②	③	④	⑤	⑥	⑦		⑨
16	Color wheel	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	Compiler/code generator	①	②	③	④	⑤	⑥			⑨	⑩
16	EKG sequence convergence	①	②	③	④	⑤	⑥	⑦		⑨	⑩
16	Factorions	①	②	③	④	⑤			⑧		⑩
16	Fermat numbers	①	②	③	④	⑤	⑥			⑨	⑩
16	Find URI in text	①	②	③	④			⑦	⑧
16	Finite state machine	①	②	③	④			⑦	⑧	⑨	⑩
16	Gauss-Jordan matrix inversion	①	②	③	④	⑤		⑦	⑧		⑩
16	HTTPS/Client-authenticated	①	②	③	④	⑤	⑥	⑦	⑧		⑩
16	ISBN13 check digit	①	②	③	④	⑤	⑥				⑩
16	Just in time processing on a character stream	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Knuth's power tree	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Montgomery reduction	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	N-smooth numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
16	Particle Swarm Optimization	①	②	③	④	⑤	⑥	⑦	⑧	⑨
16	Perceptron	①	②		④			⑦	⑧	⑨	⑩
16	Polynomial synthetic division	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
16	Sum data type	①	②	③	④	⑤					⑩
16	Vogel's approximation method	①	②	③	④		⑥	⑦	⑧	⑨	⑩
15	Abelian sandpile model	①	②	③	④	⑤	⑥
15	Compiler/syntax analyzer	①	②		④	⑤	⑥			⑨
15	Compiler/virtual machine interpreter	①	②	③	④	⑤	⑥				⑩
15	De Bruijn sequences	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
15	Draw pixel 2	①	②	③	④	⑤		⑦	⑧
15	Fairshare between two and more	①	②	③	④	⑤	⑥			⑨	⑩
15	Free polyominoes enumeration	①	②		④		⑥	⑦	⑧	⑨
15	Geometric algebra	①	②	③	④		⑥	⑦		⑨
15	Imaginary base numbers	①	②	③	④	⑤	⑥	⑦		⑨
15	Monads/Writer monad	①	②		④			⑦			⑩
15	NYSIIS	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
15	Nonogram solver	①	②		④	⑤	⑥	⑦	⑧	⑨
15	Peano curve	①	②	③	④	⑤	⑥		⑧		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	Random Latin Squares	①	②	③	④	⑤	⑥	⑦			⑩
15	Rendezvous	①	②	③	④				⑧		⑩
15	Retrieve and search chat history	①	②	③	④				⑧		⑩
15	Self-hosting compiler	①	②	③			⑥	⑦			⑩
15	Separate the house number from the street name	①	②	③	④	⑤	⑥	⑦	⑧
15	Spelling of ordinal numbers	①	②	③	④	⑤	⑥	⑦		⑨	⑩
15	Transportation problem	①	②	③	④			⑦	⑧	⑨
15	Word search	①	②	③	④	⑤	⑥	⑦	⑧	⑨	⑩
14	Bitmap/Read an image through a pipe	①		③	④		⑥	⑦	⑧		⑩
14	First power of 2 that has leading decimal digits of 12	①	②	③	④	⑤	⑥			⑨	⑩
14	Matrix Digital Rain	①	②	③	④	⑤	⑥		⑧		⑩
14	Matrix chain multiplication	①	②	③	④	⑤		⑦		⑨	⑩
14	Mayan numerals	①	②	③	④	⑤	⑥			⑨	⑩
14	Most frequent k chars distance	①	②	③		⑤	⑥	⑦	⑧	⑨
14	Nested templated data	①	②	③	④	⑤	⑥		⑧		⑩
14	Numerical integration/Adaptive Simpson's method	①	②	③	④	⑤	⑥	⑦		⑨	⑩
14	Palindromic gapful numbers	①	②	③	④		⑥			⑨	⑩
14	Proof	①	②						⑧
14	Teacup rim text	①	②	③	④	⑤	⑥				⑩
14	Terminal control/Positional read	①	②	③	④		⑥	⑦	⑧
14	Unprimeable numbers	①	②	③	④	⑤	⑥			⑨	⑩
14	Vibrating rectangles	①	②	③	④	⑤	⑥		⑧
13	Compare sorting algorithms' performance	①	②		④		⑥	⑦
13	File size distribution	①	②	③	④	⑤	⑥	⑦	⑧		⑩
13	Generalised floating point addition	①	②	③	④	⑤		⑦	⑧	⑨
13	Latin Squares in reduced form	①	②	③	④		⑥	⑦		⑨	⑩
13	Metallic ratios	①	②	③	④	⑤	⑥	⑦		⑨	⑩
13	Permutations with some identical elements	①	②	③	④	⑤					⑩
13	Pierpont primes	①	②	③	④	⑤	⑥	⑦		⑨	⑩
13	Stirling numbers of the first kind	①	②	③	④	⑤	⑥			⑨	⑩
13	Stirling numbers of the second kind	①	②	③	④	⑤	⑥			⑨	⑩
13	Suffix tree	①	②	③		⑤	⑥	⑦	⑧	⑨
13	Topological sort/Extracted top item	①	②	③	④	⑤	⑥	⑦	⑧	⑨
13	XML Validation	①		③		⑤	⑥	⑦		⑨
12	Banker's algorithm	①	②	③	④	⑤		⑦	⑧
12	Bitmap/PPM conversion through a pipe	①		③	④		⑥	⑦	⑧		⑩
12	Chernick's Carmichael numbers	①	②	③	④	⑤				⑨	⑩
12	Compiler/AST interpreter	①	②		④	⑤	⑥			⑨	⑩
12	Deconvolution/2D+	①	②	③	④	⑤	⑥
12	OpenWebNet Password	①	②	③	④	⑤	⑥	⑦	⑧
12	Peaceful chess queen armies	①	②	③	④	⑤	⑥	⑦			⑩
12	Primalty by Wilson's theorem	①	②	③	④	⑤	⑥			⑨	⑩
12	Sequence: nth number with exactly n divisors	①	②	③	④	⑤	⑥	⑦		⑨	⑩
12	Singly-linked list/Element removal	①	②	③	④			⑦	⑧
12	Snake	①	②	③		⑤		⑦		⑨
12	Yellowstone sequence	①	②	③	④	⑤	⑥			⑨	⑩
11	Bioinformatics/base count	①	②	③	④	⑤	⑥				⑩
11	Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N)	①		③	④		⑥	⑦	⑧		⑩
11	Functional coverage tree	①	②	③	④	⑤	⑥	⑦	⑧
11	Mertens function	①	②	③	④	⑤				⑨	⑩
11	Möbius function	①	②	③	④	⑤				⑨	⑩
11	Next highest int from digits	①	②	③	④	⑤	⑥				⑩
11	Pisano period	①	②	③	④	⑤	⑥				⑩
11	Print debugging statement	①	②	③	④	⑤			⑧		⑩
11	Safe mode	①	②	③		⑤					⑩
11	Simulated annealing	①	②	③	④	⑤			⑧		⑩
11	Sine wave	①	②	③		⑤		⑦	⑧		⑩
11	VList	①	②	③				⑦	⑧
10	15 puzzle solver	①	②		④		⑥		⑧
10	ASCII art diagram converter	①	②	③	④				⑧	⑨
10	Bioinformatics/Sequence mutation	①	②	③	④	⑤	⑥				⑩
10	Canny edge detector	①	②		④		⑥
10	Execute CopyPasta Language	①	②	③	④	⑤	⑥			⑨	⑩
10	Factorial base numbers indexing permutations of a collection	①	②	③	④	⑤	⑥				⑩
10	Four is the number of letters in the ...	①	②	③	④	⑤	⑥	⑦		⑨	⑩
10	Gradient descent	①	②	③	④	⑤			⑧		⑩
10	Increasing gaps between consecutive Niven numbers	①	②	③	④	⑤				⑨	⑩
10	Interactive Help	①	②	③	④	⑤			⑧
10	Penrose tiling	①	②	③	④	⑤		⑦	⑧	⑨
10	Rare numbers	①	②		④			⑦
10	Spoof game	①	②	③	④	⑤		⑦			⑩
10	Tarjan	①	②	③	④	⑤		⑦	⑧		⑩
10	Tetris	①	②		④					⑨
9	Audio frequency generator	①	②			⑤
9	Catmull–Clark subdivision surface	①			④		⑥
9	Combinations with repetitions/Square Digit Chain	①	②	③	④	⑤		⑦			⑩
9	Fibonacci matrix-exponentiation	①	②	③	④	⑤				⑨
9	French Republican calendar	①	②	③	④	⑤		⑦
9	Launch rocket with countdown and acceleration in stdout	①	②	③	④	⑤			⑧		⑩
9	Minimum positive multiple in base 10 using only 0 and 1	①	②	③	④	⑤					⑩
9	Parse EBNF	①	②	③		⑤
9	Pentomino tiling	①	②		④			⑦	⑧	⑨	⑩
9	Railway circuit	①	②		④			⑦	⑧	⑨	⑩
9	Ramanujan's constant	①	②	③	④	⑤				⑨
9	Resistance Calculator	①	②	③	④	⑤	⑥				⑩
9	Run as a daemon or service	①		③					⑧
9	Sorting algorithms/Tree sort on a linked list	①	②		④			⑦	⑧		⑩
9	Starting a web browser	①	②	③	④	⑤			⑧
9	Suffixation of decimal numbers	①	②	③	④	⑤	⑥				⑩
9	Time-based One-time Password Algorithm	①		③	④				⑧		⑩
9	UPC	①	②	③	④	⑤					⑩
8	21 Game	①	②	③	④	⑤			⑧
8	Checksumcolor	①	②	③	④	⑤					⑩
8	Colour pinstripe/Printer	①	②	③			⑥		⑧
8	Cyclotomic Polynomial	①	②	③	④	⑤	⑥			⑨
8	External sort	①	②	③	④	⑤	⑥
8	Greed	①	②		④			⑦		⑨
8	Morpion solitaire	①	②						⑧	⑨
8	Numerical and alphabetical suffixes	①	②	③	④		⑥				⑩
8	One-time pad	①	②	③	④			⑦	⑧	⑨
8	Pinstripe/Printer	①	②	③					⑧
8	Unit testing	①		③	④				⑧		⑩
7	16 Puzzle Game	①	②		④	⑤
7	Curve that touches three points	①	②	③	④	⑤					⑩
7	Display an outline as a nested table	①	②	③	④	⑤					⑩
7	Faces from a mesh	①	②	③	④	⑤	⑥				⑩
7	IPC via named pipe	①							⑧		⑩
7	Minimal steps down to 1	①	②	③	④		⑥			⑨	⑩
7	Multidimensional Newton-Raphson method	①	②	③	④			⑦			⑩
7	Powerful numbers	①	②	③	④	⑤					⑩
7	Resistance Network Calculator	①	②	③	④	⑤	⑥				⑩
7	Robots	①	②	③	④			⑦		⑨
7	Rosetta Code/Rank languages by number of users	①	②	③		⑤			⑧		⑩
7	Sierpinski curve	①	②	③	④	⑤					⑩
7	Sierpinski square curve	①	②	③	④	⑤					⑩
7	Tree datastructures	①	②	③	④	⑤	⑥				⑩
7	User defined pipe and redirection operators	①		③		⑤			⑧
7	Using a Speech engine to highlight words	①
6	Compiler/ Verifying Syntax	①	②		④	⑤
6	Elliptic Curve Digital Signature Algorithm	①	②	③	④
6	Fibonacci heap	①	②		④		⑥	⑦
6	Mayan calendar	①	②	③	④	⑤					⑩
6	OpenGL Pixel Shader	①						⑦	⑧
6	OpenGL/Utah Teapot	①	②					⑦
6	Recursive descent parser generator	①	②	③	④
6	Rosetta Code/Run examples	①		③
6	Rosetta Code/Tasks without examples	①	②	③		⑤					⑩
6	Sierpinski arrowhead curve	①	②	③		⑤					⑩
6	Text to HTML	①	②	③					⑧
5	Addition-chain exponentiation	①	②						⑧
5	Boids	①	②		④					⑨
5	Continued fraction/Arithmetic/G(matrix NG, Contined Fraction N1, Contined Fraction N2)	①		③				⑦
5	Hexapawn	①	②		④
5	Remote agent/Agent interface	①			④
5	Remote agent/Agent logic	①			④
5	Remote agent/Simulation	①			④
4	Chess player	①	②				⑥
4	Generalised floating point multiplication	①	②		④
4	I'm a software engineer, get me out of here	①	②		④
4	OLE Automation	①					⑥
4	Process SMIL directives in XML data	①	②	③
4	Tamagotchi emulator	①
4	Terminal control/Restricted width positional input/No wrapping	①	②	③				⑦
4	Terminal control/Restricted width positional input/With wrapping	①	②	③				⑦
4	URL shortener	①		③	④
4	Using the Meetup.com API	①					⑥			⑨
3	Audio Overlap Loop	①
3	Black Box	①									⑩
3	Latin Squares in reduced form/Randomizing using Jacobson and Matthews’ Technique	①	②
3	Line circle intersection	①	②								⑩
3	Raster bars	①		③
3	Rosetta Code/List authors of task descriptions	①	②	③
3	Solve a Rubik's Cube	①	②					⑦
3	Solving coin problems	①	②			⑤
3	Unicode polynomial equation	①	②		④
2	15 Puzzle Game in 3D	①
2	IRC gateway	①
1	Blackjack strategy	①
1	Ukkonen’s Suffix Tree Construction	①
1	Waveform analysis/Doh ray me	①
1	Waveform analysis/Top and tail	①
0	Rosetta Code/Tasks sorted by average lines of code
0	Weather Routing