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5 kyu
Convert all the cases!
1,426AJFarmar
Strings
Regular Expressions
Algorithms
5 kyu
Factorial decomposition
7,199g964
Fundamentals
6 kyu
Maze Runner
7,492adrian.eyre
Arrays
Fundamentals
5 kyu
Car Park Escape
1,492adrian.eyre
Arrays
Games
Fundamentals
4 kyu
So Many Permutations!
47,465BattleRattle
Permutations
Strings
Algorithms
4 kyu
Hamming Numbers
11,643xcthulhu
Number Theory
Algorithms
5 kyu
Count IP Addresses
28,428xDranik
Algorithms
5 kyu
Memoized Fibonacci
23,122edalorzo
Memoization
Refactoring
5 kyu
Complete Binary Tree
445ecolban
Binary Trees
Heaps
Data Structures
Fundamentals
4 kyu
Most frequently used words in a text
27,950markprzepiora
Strings
Filtering
Algorithms
Regular Expressions
4 kyu
Sort binary tree by levels
13,307kars7e
Trees
Binary Trees
Performance
Algorithms
Sorting
5 kyu
Domain name validator
542Disassembler0
Regular Expressions
Strings
Fundamentals
4 kyu
parseInt() reloaded
17,616BattleRattle
Parsing
Strings
Algorithms
4 kyu
Burrows-Wheeler-Transformation
1,919muesli4
Lists
Puzzles
Algorithms
6 kyu
One-Semicolon Vector Dot Product
128phantamanta44
Algorithms
Fundamentals
Restricted
Puzzles
5 kyu
One-Semicolon Matrix Multiplication
89phantamanta44
Linear Algebra
Matrix
Algorithms
Puzzles
Restricted
4 kyu
Vigenère Cipher Helper
8,276jacobb
Algorithms
Ciphers
Security
Object-oriented Programming
Strings
6 kyu
Check by Queen
617dukies_2000
Fundamentals
3 kyu
Binomial Expansion
6,152TheDoctor
Mathematics
Algebra
Algorithms
6 kyu
Number Format
3,111cnawaraj
Regular Expressions
Fundamentals
7 kyu
Remove anchor from URL
45,533jhoffner
Regular Expressions
Strings
Fundamentals
6 kyu
Clocky Mc Clock-Face
9,058dinglemouse
Fundamentals
6 kyu
Who won the election?
3,487SithFire
Algorithms
Lists
Fundamentals
4 kyu
Snail
76,151stevenbarragan
Arrays
Algorithms
4 kyu
Sum of Intervals
38,595xDranik
Algorithms
Performance
4 kyu
How many numbers III?
3,976raulbc777
Fundamentals
Data Structures
Algorithms
Mathematics
Logic
4 kyu
Pyramid Slide Down
18,082rodentrabies
Algorithms
Dynamic Programming
4 kyu
String -> X-Iterations -> String
306Jomopipi
Algorithms
Puzzles
Mathematics
Language Features
5 kyu
Caesar Cipher Helper
4,916eugene-bulkin
Ciphers
Object-oriented Programming
Strings
Algorithms
5 kyu
Break the Caesar!
726kingcobra
Ciphers
Cryptography
Fundamentals
6 kyu
Custom Christmas Tree
991myjinxin2015
Strings
ASCII Art
Puzzles
5 kyu
Greed is Good
56,899JulianNicholls
Algorithms
6 kyu
The String Combat
179myjinxin2015
Puzzles
Games
4 kyu
Large Factorials
9,164matt c
Algorithms
Big Integers
4 kyu
Sum by Factors
19,184g964
Arrays
Algorithms
Mathematics