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Challenges
2,421 JavaScript challenges
Python
JavaScript
Search
Special String
Hard
JavaScript
strings
data_structures
Is This a Full Cycle?
Hard
JavaScript
algorithms
validation
Ragbaby Cipher
Hard
JavaScript
cryptography
algorithms
strings
Recursion: Case and Index Inverter
Hard
JavaScript
recursion
strings
validation
Sort a String with the Given Template
Hard
JavaScript
algorithms
conditions
sorting
Sticky Keys Typing
Hard
JavaScript
conditions
logic
strings
Trie or Trie not: There Is No "Do"
Hard
JavaScript
data_structures
strings
classes
Range of Numbers
Hard
JavaScript
strings
numbers
Number Base Converter
Hard
JavaScript
math
numbers
Vampire Numbers
Hard
JavaScript
numbers
algorithms
recursion
Ctrl + C, Ctrl + V
Hard
JavaScript
strings
formatting
Padovan Sequence
Hard
JavaScript
numbers
math
logic
Prime Factors with Sum
Hard
JavaScript
arrays
numbers
logic
Shifting Letters Cypher
Hard
JavaScript
algorithms
cryptography
logic
Word Search (Part 2)
Hard
JavaScript
arrays
strings
Recursion: Parity of the Smallest Integer
Hard
JavaScript
recursion
arrays
Roll the Dice
Hard
JavaScript
math
numbers
Baum-Sweet Sequence
Hard
JavaScript
math
numbers
Recursion: Index Parity of Largest Even
Hard
JavaScript
recursion
arrays
numbers
Strong Password Checker
Hard
JavaScript
logic
numbers
higher_order_functions
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