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6 kyu
Two Sum
79,667wthit56
Arrays
Fundamentals
Algorithms
6 kyu
Matrix Rotation
455cyril-lemaire
Matrix
Fundamentals
6 kyu
Longest palindrome
1,262georgesykes86
Arrays
Strings
Algorithms
6 kyu
Linked Lists - Insert Nth Node
2,617JDeBolt
Linked Lists
Data Structures
Fundamentals
6 kyu
Linked Lists - Iterative Reverse
569JDeBolt
Linked Lists
Data Structures
Algorithms
6 kyu
Linked Lists - Remove Duplicates
2,110JDeBolt
Linked Lists
Data Structures
Fundamentals
7 kyu
Find the K-th last element of a singly linked list
400SergiuB
Linked Lists
Lists
Data Structures
Fundamentals
7 kyu
Linked Lists - Get Nth Node
5,502JDeBolt
Linked Lists
Data Structures
Fundamentals
6 kyu
Linked Lists - Length & Count
9,774JDeBolt
Linked Lists
Data Structures
Fundamentals
7 kyu
Merge two arrays
4,427billfero
Fundamentals
Arrays
7 kyu
Reverse a Number
13,457MattWatt
Algorithms
Fundamentals
5 kyu
Binary search tree validation
949plastic
Trees
Recursion
Data Structures
Algorithms
6 kyu
Is a number prime?
110,315arithmetric
Mathematics
Algorithms
6 kyu
Group Anagrams
1,247dulaccc
Algorithms
Data Structures
5 kyu
Conway's Game of Life
2,263ssineriz
Games
Graphics
Puzzles
Cellular Automata
7 kyu
Fizz / Buzz
3,941ztbrown
Mathematics
Algorithms
6 kyu
Fizz Buzz Reloaded
271the_Hamster
Fundamentals
6 kyu
Singly Linked List - Swap Nodes
112cyril-lemaire
Linked Lists
Fundamentals
Algorithms
6 kyu
Vending Machine
808adrian.eyre
Arrays
Fundamentals
6 kyu
Maze Runner
7,389adrian.eyre
Arrays
Fundamentals
5 kyu
Binary Tree Traversal
1,923Ban-Ath
Binary Trees
Trees
Recursion
Data Structures
Algorithms
5 kyu
Human Readable Time
140,027BattleRattle
Date Time
Mathematics
Algorithms
4 kyu
Snail
74,473stevenbarragan
Arrays
Algorithms
5 kyu
Vector class
8,372eugene-bulkin
Object-oriented Programming
Algorithms
Linear Algebra
6 kyu
Prime Word
535sazzadshopno
Fundamentals
5 kyu
Find the smallest
5,393g964
Fundamentals
6 kyu
Kata 2019: Combine Fruits
194myjinxin2015
Algorithms
Performance
5 kyu
Coding with Squared Strings
2,033g964
Fundamentals
Strings
Ciphers
Cryptography
5 kyu
Topological Sort
60brickshot
Algorithms
Graph Theory
Sorting
6 kyu
Word Mesh
1,484rt-hawk
Regular Expressions
Arrays
Strings
Fundamentals
6 kyu
Simple Web Framework #1: Create a basic router
1,527int3_0xcc
Object-oriented Programming
Arrays
Fundamentals