36
U.V
● 15 ● 40 ● 50
8049/ 8195
Last seen 2 hours ago
Member for 2 years, 1 month, 29 days
Difficulty Easy
Missions (475) / Solutions (259)
 Strings and Integers
The Most Wanted Letter
8
Digits Multiplication
8
Three Words
5
Fizz Buzz
5
Bird Language
8
Cut Sentence
12
 97 2
First Word
8
Correct Sentence
5
Conversion into CamelCase
8
Conversion from CamelCase
8
Middle Characters
13
 5 3
Multiply (Intro)
5
Between Markers (simplified)
5
First Word (simplified)
5
End Zeros
20
 9 5
Number Length
5
Backward String
5
All Upper I
5
Beginning Zeros
8
Max Digit
5
Sum Numbers
5
Goes Right After
8
Is Even
5
Excel Column Number
8
Goes Right After (simplified)
10
 3 1
Just Fizz!
24
 4 7
Rectangle Perimeter
21
 1 17
The Longest Word
11
 9 3
Count Vowels
6
 40
Convert To Title Case
9
 12
Replace All Occurrences
9
 6
Longest Substring of Unique Characters
12
 28
Number With Exclamation
23
 1 8
Count Substring Occurrences
9
 32
Longest Common Prefix
9
 16
Convert Date
19
 5 5
Fuzzy String Matching
26
 5 5
All Permutations
9
Find Remainder
6
Integer Sign Determination
6
 15 3
Sum of Integers
9
Reverse Integer
20
 7 6
Armstrong Number Checking
22
 3 8
Maximum Among Three
6
 2
Leap Year Checking
14
 20 2
Quadratic Equation Roots
9
 18
Count Divisibles in Range (simplified)
6
Perfect Number Checking
12
 9 1
Variable: Declaration and Value Setting
1
Variables with Expression Values
2
Empty Function
2
Take and Return Argument
2
 List but not the least
Non-unique Elements
8
Median
8
Even the Last
5
Absolute Sorting
5
Right to Left
5
Index Power
5
Easy Unpack
5
The Most Frequent
11
 10 4
All the Same
15
Follow Instructions
8
Frequency Sorting
8
Ascending List
8
Zigzag Array
13
 52 3
Reverse Every Ascending
8
Replace First
5
Compress List
8
Remove All Before
5
Remove All After
5
Majority
8
Chunk
15
 43 5
Sort Except Zero
15
Backward Each Word
8
Words Order
8
Sort by Extension
32
 11 3
Non Empty Lines
5
Stock Profit
5
 68
Changing direction
15
Missing Number
32
 11 5
Duplicate Zeros
8
 28
 Look up in the Dict()
Golden Pyramid
8
 84
Verify Anagrams
15
 130
The Flat Dictionary
33
 5 2
Pawn Brotherhood
15
Boolean Algebra
15
What Is Wrong With This Family?
20
 258
Bigger Price
8
Best Stock
8
Popular Words
8
The Cheapest Flight
8
How Deep
15
 254
YAML. Simple Dict
15
YAML. More Types
20
YAML. List and Comments
20
YAML. Complex Structure
30
Count Digits
5
Aggregate by Operation
12
 5
Move Zeros
10
 40
Switch Keys to Values
19
 10 5
Blood distribution
12
 1
Ordinary Cardinals
12
 Strings Theory
Speech Module
15
 225 5
Brackets
30
 1938
House Password
8
Morse Clock
37
 147 3
Common Words
8
Letter Queue
8
Pangram
8
The Longest Palindromic
8
 82
Stressful Subject
8
 680
Long Repeat
8
Double Substring
12
 88 2
Second Index
8
Between Markers
8
The Nearest Square Number
13
 46 3
Morse Encoder
8
Morse Decoder
8
Sun Angle
15
Chemical Analysis
12
 35
Caps Lock
8
Surjection Strings
15
Remove Brackets
15
 11
Text Formatting
15
 2 5
All Upper II
5
Acceptable Password I
5
Acceptable Password II
8
Acceptable Password III
8
Acceptable Password IV
8
Acceptable Password V
8
Acceptable Password VI
8
Sum of Digits
12
 2 1
One Switch Strings
19
 3 5
Adjacent Letters
15
 2
Correct Capital
9
 4
Long Pressed
12
Is String a Number?
15
 56
Is String a Number? (Part II)
32
 8 5
Fibonacci Poem
18
 13 3
Calculator-I
15
Calculator-II
15
Calculator-III
15
Huffman Encode
20
 1
Calculator-IV
15
Calculator-V
15
Calculator-VI
15
Calculator-VII
15
Reveal the Number
20
 2
Working Hours Calculator
15
 2
Work Schedule Generator
15
Schedule Mode Builder
15
Count Morse
12
The Hollow Diamond
12
Tricky String
18
 3 4
Revorse the vewels
9
 28
Champernowne Word
12
Collatz Ztalloc
9
Matrix-2-String
9
String-2-Matrix
9
 List, list and list again
Determine the Order
30
Cipher Crossword
30
Xs and Os Referee
12
Flatten a List
12
Color Map
20
Xs and Os Champion
15
The Highest Building
8
Flatten a List (iterator version)
12
Flatten a List (generator version)
12
 10
Median of Three
8
Sort Array by Element Frequency
8
Split Pairs
15
 13 5
Split List
15
Replace Last
7
 30
Sum by Type
8
Convert and Aggregate
15
 47
Integer Palindrome
18
 15 4
Nonogram Encode
15
 3
Sort Sorted Groups
15
 25
When "k" is Enough!
32
 2 5
Not in Order
24
 1 10
Replace with Biggest
16
 1 3
Matrix "Hatching"
26
 1 5
Toothpicks
15
Ulam–Warburton Automaton
12
Ulam-Warburton Automaton Hex
12
 2
List Beautify
12
 19
Garland
12
Beat The Previous
9
 6
Close Enough
12
 10
Overlapping Disks
18
 1 4
Postfix Evaluation
9
 6
 Different kind of sets
The End of Other
5
Mind Switcher
30
Berserk Rook
33
 33 2
Friends
32
 83 3
Power Supply
20
 50
Merge Intervals
9
Create Intervals
8
Seven Segment
15
 234
Create Intervals (iterator version)
9
Create Intervals (generator version)
9
Merge Intervals (iterator version)
12
 6 3
Merge Intervals (generator version)
9
 9
Expand Intervals
15
Square Board
8
 23
Nearest Value
8
Boundary Blocks
30
Hexagonal Islands
20
 2
Power Plants
15
 40
Shorter Set
10
 17 3
 Mine
Funny Addition
5
Bats Bunker
30
Express Delivery
60
 127
Multiplication Table
8
 27
Auto Painting
15
 139
Parse Array
30
Simple Areas
8
Super Root
8
 236
Can You Pass?
40
Inside Block
30
 89
The Einstein Problem-Lite
15
 80
Making Change
15
Reverse Roman Numerals
15
Unix Match. Part 1
30
Unix Match. Part 2
50
 82 1
Count Consecutive Summers
15
 46
Common Tail
9
 38
Interesting, intersecting
12
 24
Latest ISO datetime
42
 1 11
Sum of Distinct Cubes
12
All Roads Lead to Rome!
12
 1
Checking Perfect Power
12
Grid Painting
15
The Centrifuge Problem
12
Frogs Collision
9
 Ice Base
Radiation Search
15
 637
Skew-symmetric Matrix
5
Transposed Matrix
15
 53
Spaceship Landing Strip
39
 12 5
Three Points Circle
32
 19 3
Calculate Islands
15
 336
Pearls in the Box
15
The Hidden Word
20
Feed Pigeons
8
The Most Numbers
8
Digit Stack
8
Weak Point
5
The Greatest Common Divisor
8
 455
Moria Doors
15
Caesar Cipher (encryptor)
8
 125
Similar Triangles
30
Fibonacci Spiral's End
12
 1
Peaceable Queens
15
15-puzzle Solvability
26
 3 5
e+pi
12
Cut Into Squares
15
Exploring Wythoff Array
15
Flip of Time
12
The Cookie Monster
12
"Lunar" Multiply
9
 10
Count Divisibles in Range
6
 2
Bridge Routine
24
 1 4
Count And Say
9
 17
Bishop vs Aliens
12
 1
 The Game is Worth it!
The Shortest Knight's Path
30
The Square Chest
8
 359
8 Puzzle
30
Minesweeper
20
Digits Doublets
43
 8 7
Unfair Dice
20
 2
Probably Dice
54
 66 3
Battle Dice
30
The 88th Puzzle
20
Life Counter
30
Bacteria Colonies
20
 9
Texas Referee
48
 16 2
Wall Keeper
15
 6
Nonogram Row
15
 13
Paper Dice
20
 8
Eaten Go Stones
15
 43
The Territory of Go
32
 8 3
Fortress Cannons
20
 18
Magic with 5 cards
30
 6
The Final Stone
12
 8
Reversi: Othello Moves
15
 1
Stepping Stones Puzzle
15
Knapsack Problem
15
 1
Rolling 🎲!
22
 3 3
Count Domino Tilings
12
Checkers Capture
22
 3 3
R-mahjong Ⅰ: break hand into sets
12
 GitHub
Roman Numerals
15
Open Labyrinth
30
 954
The Angles of a Triangle
17
 113 7
Ghosts Age
8
 74
Restricted Sum
5
 1613
Binary Count
8
Number Base
15
 2634
Min and Max
8
 1350
Monkey Typing
8
 2308
I Love Python!
5
Secret Message
15
Moore Neighbourhood
8
 1205
New Cities
15
 148
City's Happiness
20
 3
 Dropbox
Determinant
8
 25
Anagrams By Stacks
60
Colder-Warmer
54
 19 3
How Much Gold
15
 103
Numbered Triangles
20
 13
Saw the Stick
8
Humpty Dumpty Form
15
 466
Restricted Prime
8
 123
Mono Captcha
15
Rotate Hole
8
Achilles and the Tortoise
5
One line Drawing
15
Simplification
60
 26
Playfair Cipher
32
 15 3
ADFGVX Cipher
44
 12 5
Clock Angle
15
 292
IP Network: Route Summarization
15
 171
Completely Empty
20
Count Chains
15
 51
Count Squares
12
 2
 Everything is Object
Building Base
15
 1346
Every Person is Unique
15
3 Chefs
15
 250
Geometry Figures
32
 28 3
Capital City
36
 3 4
Multicolored Lamp
15
Microwave Ovens
15
 70
Voice TV Control
15
Hacker Language
15
Dialogues
15
 186
Party Invitations
15
Army Units
15
Text Editor
15
The Warriors
15
Army Battles
15
The Defenders
15
The Vampires
8
The Lancers
20
The Healers
20
Straight Fight
20
The Weapons
15
The Warlords
30
OOP 1: First Look at Class and Object
5
OOP 2: Class Attributes
5
OOP 3: Initializing
5
OOP 4: Adding Methods
5
OOP 5: Parent - Child
5
OOP 6: Overriding Methods
5
OOP 7: Adding Parameters
5
 Master of the Time Stone
Weekend Counter
12
 93 2
Days Between
5
Broken Clock
20
 140
Unlucky Days
5
 19
The Most Frequent Weekdays
8
Bigger Together
8
 126
Date and Time Converter
8
When is Friday?
14
 64 4
Time Converter (24h to 12h)
15
Time Converter (12h to 24h)
15
The First Working Day
5
 159
Group Equal consecutive
8
Weekly Calendar
22
 46 1
Next Birthday
15
 6
Lightbulb Intro
15
Lightbulb Start Watching
15
Lightbulb End Watching
15
 60
Multiple Lightbulbs
20
 42
Lightbulb Operating
20
Lightbulb More
20
Birthday Party
5
 Maya
Inertia
8
Signpost
15
 HubSpot
Building Visibility
8
Ore In The Desert
60
 164
The Good Radix
8
 252
Palindromic Palindrome
30
Bulls and Cows
27
 17 1
Repeating Decimals
8
 127
Bag of Santa Claus
8
Oil Pie
8
 217
Earth Distances
15
Dark Labyrinth
20
Network Loops
15
Parity Bit Generator
8
 113
Black Holes
20
 60
Landing Site
44
 6 5
Permutation Index
15
Reversed Permutation Index
15
 8
Team Play
12
 7
 Blizzard
Mathematically Lucky Tickets
15
The Rows of Cakes
15
 170
Pattern Recognition
8
 21
Simple Hashlib
5
 297
Word Pattern
5
 59
Shooting Range
8
Vigenere Cipher
8
 164
English to Braille Translator
15
 86
Identify Block
20
Barcode Reader
15
Worth of Words
5
 422
Fast Train
8
Can Balance
15
 11
Flood Area
15
 67
 Rock
Hubspot Amulet
20
 32
Keywords Finder
15
Climbing Route
15
 1
Caesar Cipher (decryptor)
10
 10 1
Supply Line
30
 56
Rectangles Union
8
 10
Find Quotes
8
 117
Sum Consecutives
8
Halloween Monsters
15
Searchlights
20
Tree Walker
48
 8 7
On the same path
39
 10 5
Fused Cubes
30
 27
Sort by Removing
15
Triangular Islands
42
 6 5
Mountain Scape
30
 8 4
Greedy Number
37
 10 3
Exploring Calkin-Wilf Tree
12
 Shelter
Remove Accents
8
 216
Unfair Districts
15
Simplify Unix Path
69
 10 4
Fractions Addition
39
 9 5
Chess Knight
15
 85
Escape
20
 69
Inscribe a Contour
20
Univocalic davasaan
5
Stacking Cubes
45
 1 7
Family Dinner
15
Home Coming
15
Connect Stars
25
 39
Count Comprehensions
25
 2
Park Benches
20
Atbash Cipher
5
Scytale Encryption
10
 26 1
Grille Cipher Attack
60
 Codeship
Water Jars
15
 64
Web Log Sessions
15
 90
Forgetful Prisoner
20
Cookies
8
Strawberry Fields
44
 9 5
River Crossing
30
Workout
25
Unique Email Addresses
19
 10 5
Backspace Apply
19
 10 5
Ugly Numbers
46
 1 6
 Hermit
CheckSum
5
 177
Ryerson Letter Grade
5
Broken Window
30
Write Quadratic Equation
12
 Watchtower
Useless Flights
20
 6
Four To The Floor
8
Rotating Grille Cipher
15
 14
Playfair Cipher Attack
60
 Escher
The Ship Teams
8
 213
Ground for the House
15
 249
Compass, Map and Spyglass
8
 262
The Stone Wall
8
Wild Dogs
15
 147
The Secret Room
8
Keys and Locks
15
 33
Safe Code
8
Treasures
8
 96
The Stones
15
Card Game
8
 78
The Buttons
15
Graphical Key
20
Hypercube
15
 64
 Not On Map
Most Wanted Letter
0
Aggregate and Count
15
 10