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3 kyu
The builder of things
1,010jhoffner
Metaprogramming
Domain Specific Languages
Algorithms
Language Features
4 kyu
So Many Permutations!
48,028BattleRattle
Permutations
Strings
Algorithms
1 kyu
BECOME IMMORTAL
3,094Voile
Puzzles
Dynamic Programming
Performance
Algorithms
1 kyu
Square sums
585metalim
Algorithms
Mathematics
4 kyu
Undo/Redo
3,617surtich
Algorithms
Fundamentals
Object-oriented Programming
2 kyu
Insane Coloured Triangles
3,866Bubbler
Puzzles
Performance
Mathematics
5 kyu
Alphabet wars - nuclear strike
1,662dcieslak
Strings
Regular Expressions
Fundamentals
Retired
Algebraic Data Types (retired)
370surtich
Algorithms
Functional Programming
Declarative Programming
Programming Paradigms
1 kyu
7×7 Skyscrapers
1,999JohanWiltink
Algorithms
Games
Performance
2 kyu
Regular expression parser
1,051phaul
Parsing
Functional Programming
Algorithms
2 kyu
6 By 6 Skyscrapers
2,465FrankK
Mathematics
Puzzles
Games
Arrays
Matrix
Algorithms
4 kyu
Fluent Calculator
673karudedios
Algorithms
Mathematics
Language Features
7 kyu
Valid Parentheses
8,500Kacarott
Strings
Parsing
Algorithms