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Retired
Double Cola (retired)
14,993AlexIsHappy
Algorithms
Mathematics
Logic
Numbers
5 kyu
Molecule to atoms
5,714romanzes
Parsing
Algorithms
Strings
Beta
Range Merging
35sneakyOwl
Status:Waiting for issues to be resolved
Algorithms
4 kyu
Ranking Poker Hands
3,019FrankK
Games
Algorithms
Object-oriented Programming
4 kyu
Sortable Poker Hands
442FrankK
Games
Fundamentals
Sorting
Design Patterns
Algorithms
7 kyu
Common Substrings
1,960Shivo
Strings
Algorithms
6 kyu
Equal Sides Of An Array
118,734Shivo
Algorithms
Arrays
Fundamentals
6 kyu
Clock Patience
169dinglemouse
Algorithms
6 kyu
Nut Farm
671dinglemouse
Strings
Algorithms
5 kyu
Nut Farm 2
328dinglemouse
Algorithms
2 kyu
Full Metal Chemist #1: build me...
329Blind4Basics
Object-oriented Programming
Fundamentals
3 kyu
Blobservation
364docgunthrop
Logic
Games
Object-oriented Programming
Performance
Algorithms
5 kyu
Simple Drawing Board
118lodimob
Geometry
Object-oriented Programming
ASCII Art
Fundamentals
6 kyu
Graph Operations, part 1: find neighbours of a vertex
318akrammon
Graph Theory
Algorithms
Fundamentals
6 kyu
Killer Garage Door
1,692chainsaw-maniac
State Machines
Fundamentals
Retired
Calculator (retired)
11,547obrok
Algorithms
Parsing
Logic
Strings
Expressions
Basic Language Features
Fundamentals
4 kyu
Ten-Pin Bowling
3,352dnolan
Algorithms
Puzzles
3 kyu
The Lift
3,104dinglemouse
Algorithms
Queues
Data Structures
6 kyu
The Freeway Game
583dinglemouse
Algorithms
5 kyu
Build a Car
293frameture
Object-oriented Programming
Fundamentals
6 kyu
Buying a car
17,345g964
Fundamentals
Mathematics
5 kyu
Soundex
765dinglemouse
Algorithms
2 kyu
Regular expression parser
890phaul
Parsing
Functional Programming
Algorithms
5 kyu
Logic Detective
87Ziliquas
Algorithms
Mathematics
Logic
7 kyu
Anagram Detection
43,756user3793153
Strings
Fundamentals
3 kyu
Rail Fence Cipher: Encoding and Decoding
7,968darrentburgess
Algorithms
Ciphers
Cryptography
Strings
Security
7 kyu
String Packet Based Communications
1,130Polar
Networks
Strings
Fundamentals
Logic
6 kyu
|||clickbait||| Matrix Shift |||clickbait|||
202Jomopipi
Matrix
Performance
Puzzles
Algorithms
7 kyu
Two fighters, one winner.
26,113Scopula
Games
Algorithms
Logic
Fundamentals
6 kyu
RPS Knockout Tournament Winner
179FrankK
Games
Algorithms
Game Solvers
Design Patterns
Object-oriented Programming
2 kyu
Evaluate mathematical expression
8,966ankr
Mathematics
Parsing
Algorithms
6 kyu
Matrices I: A form of data storage
146MazTheMazy
Fundamentals
Mathematics
Data Structures
Algebra
Linear Algebra
Arrays
Lists
Matrix
5 kyu
Matrices II: Serious mathematics
71MazTheMazy
Fundamentals
Mathematics
Data Structures
Algebra
Linear Algebra
Arrays
Lists
Matrix
Beta
Matrices III: The ultimate matrix
5MazTheMazy
Status:Testing & feedback needed
Estimated Rank:
2 kyu
Fundamentals
Mathematics
Algebra
Linear Algebra
Arrays
Matrix
6 kyu
Fun with lists: countIf
1,456janitormeir
Lists
Functional Programming
Fundamentals
5 kyu
Gigabyte Streaming
54jcsahnwaldt
Streams
Fundamentals
5 kyu
Gigabyte Storage
29jcsahnwaldt
Streams
Fundamentals
6 kyu
How long is the cable?
119achtlos
Algorithms
Strings
6 kyu
Bitcoin statistics
116jcsahnwaldt
Statistics
Arrays
Fundamentals
Data Science
1 kyu
Sliding Puzzle Solver
1,033docgunthrop
Puzzles
Genetic Algorithms
Game Solvers
Algorithms
1 kyu
Mine Sweeper
1,194myjinxin2015
Puzzles
Game Solvers
7 kyu
Building blocks
11,150NaMe613
Object-oriented Programming
Fundamentals
7 kyu
Disemvowel Trolls
330,566osuushi
Strings
Regular Expressions
Fundamentals
7 kyu
anti-virus file scanner
191wayne1512
Algorithms
Strings
Security
Regular Expressions
6 kyu
Convert string to camel case
177,035jhoffner
Regular Expressions
Algorithms
Strings
7 kyu
Sum of odd numbers
154,456hhelwich
Arrays
Lists
Mathematics
Fundamentals
7 kyu
Sectional Array Sort
1,185kodejuice
Arrays
Sorting
Data Structures
Algorithms
5 kyu
Predictive contact list
123Marszal
Strings
Lists
Algorithms
4 kyu
Simplexer
630Mihail-K
Strings
Parsing
Algorithms
4 kyu
Interfacing
159Mihail-K
Metaprogramming
Puzzles
Beta
Merging Phone Numbers
45hyperion
Status:Testing & feedback needed
Estimated Rank:
7 kyu
Fundamentals
Retired
String Task (retired)
1,911arhigod
Fundamentals
Strings
Data Types
Regular Expressions
Declarative Programming
Advanced Language Features
Programming Paradigms
7 kyu
Nickname Generator
10,874cboha
Strings
Regular Expressions
Fundamentals
7 kyu
Hide password from jdbc url
879Javatlacati
Strings
Regular Expressions
Fundamentals
5 kyu
Tic-Tac-Toe (3D)
345dinglemouse
Fundamentals
5 kyu
Sweeping trees
74hyperion
Trees
Algorithms
Graph Theory
3 kyu
Screen Locking Patterns
4,186rsalgado
Mathematics
Combinatorics
Geometry
Algorithms
Graph Theory
5 kyu
Combination Lock
70zebulan
Fundamentals
7 kyu
Driving Licence
3,276adrian.eyre
Strings
Arrays
Fundamentals
6 kyu
Cure Cancer
247Jomopipi
Matrix
Arrays
Algorithms
6 kyu
Jewel Thief
446dinglemouse
Algorithms
4 kyu
parseInt() reloaded
16,224BattleRattle
Parsing
Strings
Algorithms
7 kyu
TV Remote
2,690dinglemouse
Algorithms
5 kyu
Snakes and Ladders
6,654adrian.eyre
Design Patterns
Games
Fundamentals
6 kyu
Highest Scoring Word
91,252PG1
Fundamentals
Strings
Arrays
6 kyu
Longest Strict Bouncy Subarray
548raulbc777
Performance
Algorithms
Mathematics
Data Structures
Arrays
Beta
Is Crypt Solution?
41Belia
Status:Waiting for issues to be resolved
Estimated Rank:
6 kyu
Algorithms
Fundamentals
6 kyu
Fruit Machine
3,046adrian.eyre
Arrays
Games
Fundamentals
6 kyu
Coffee machine
163marko-bekhta
Puzzles
Fundamentals
2 kyu
6 By 6 Skyscrapers
2,339FrankK
Mathematics
Puzzles
Games
Arrays
Matrix
Algorithms
4 kyu
Strip Comments
49,681jhoffner
Strings
Algorithms
4 kyu
Bridge Puzzle
124ecolban
Recursion
Puzzles
5 kyu
Ant Bridge
520dinglemouse
Algorithms
6 kyu
Street Fighter 2 - Character Selection
11,384mmalkavian
Arrays
Lists
Fundamentals
Graph Theory
Draft
Tug-o'-War
1,680edm2410
Status:Draft
Estimated Rank:
7 kyu
Arrays
Fundamentals
Beta
Price War
3FilipH
Status:Testing & feedback needed
Estimated Rank:
3 kyu
Fundamentals
Algorithms
Mathematics
Games
2 kyu
Blaine is a pain
460dinglemouse
Fundamentals
2 kyu
Gerrymander Solver
298docgunthrop
Puzzles
Logic
Algorithms
4 kyu
Human readable duration format
76,843davazp
Strings
Date Time
Algorithms
5 kyu
Escape with your booty!
534tl123
Puzzles
Games
Matrix
Simulation
6 kyu
The queen on the chessboard
679matdlu
Arrays
Fundamentals
5 kyu
Card-Chameleon, a Cipher with Playing Cards
101Zwyx
Cryptography
Games
Algorithms
4 kyu
Hide a message in a deck of playing cards
192Zwyx
Cryptography
Mathematics
Games
Permutations
Algorithms
6 kyu
Routes in a square grid
541NaMe613
Fundamentals
Puzzles
6 kyu
Paths in the Grid
848aryan-firouzian
Fundamentals
Mathematics
6 kyu
Travelling on a Grid
589mmalkavian
Puzzles
Algorithms
Beta
Check and Mate?
481Zirgion
Status:Waiting for issues to be resolved
Estimated Rank:
2 kyu
Logic
Arrays
Data Structures
Games
Algorithms
3 kyu
Find the cheapest path
503FArekkusu
Algorithms
Performance
5 kyu
Sat Nav directions
306dinglemouse
Fundamentals
5 kyu
Rotations and reflections I
122geoffp
Object-oriented Programming
Design Patterns
Geometry
Mathematics
Fundamentals
6 kyu
How many working days
78shadowmanos
Date Time
Fundamentals
4 kyu
Snail
70,810stevenbarragan
Arrays
Algorithms