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Challenges

2,421 JavaScript challenges

Python JavaScript

Kaprekar's Constant
Hard
JavaScriptsortingrecursionnumbers
Splitting Up Numbers
Hard
JavaScriptarraysnumbers
Give Me a Hint
Hard
JavaScriptarraysstringsloops
IndexOf and LastIndexOf
Hard
JavaScriptalgorithmsfunctional_programmingregex
Roman Numeral Conversion
Hard
JavaScriptalgorithmsstringsnumbers
Game of Thrones: Character Titles
Hard
JavaScriptstringsformattinglanguage_fundamentals
Get Max Depth of Object or Array
Hard
JavaScriptarraysobjectsrecursion
Economical Numbers
Hard
JavaScriptnumbersmathloops
Big Integers, Big Errors
Hard
JavaScriptclassesfunctional_programmingconditions
Sum the Digits of All Integers 0 to 10^n - 1
Hard
JavaScriptmathnumbersalgebra
Check if the Formula is Correct
Hard
JavaScriptalgebramathnumbers
Dates of Easter
Hard
JavaScriptalgorithmsmath
Rectangle or Not?
Hard
JavaScriptmathstringsvalidation
Minesweeper Number of Neighbouring Mines
Hard
JavaScriptarraysgamesloops
Recursion: Count The Digits
Hard
JavaScriptrecursionnumbersmath
Langton's Ant
Hard
JavaScriptgamesalgorithmsarrays
Mountains or Valleys
Hard
JavaScriptarraysfunctional_programminghigher_order_functions
Repeated String
Hard
JavaScriptmathstrings
Longest Alternating Substring
Hard
JavaScriptlanguage_fundamentalsmathregex
Josephus Permutation
Hard
JavaScriptloopsrecursionmath

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