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Challenges

2,421 JavaScript challenges

Python JavaScript

Stripping a Sentence Down
Hard
JavaScriptstringslanguage_fundamentalsformatting
Longest Sequence of Consecutive Zeroes
Hard
JavaScriptstringsloopslanguage_fundamentals
Flatten the Curve
Hard
JavaScriptnumbersarrayslanguage_fundamentals
Divisible by Left Digit?
Hard
JavaScriptlogicnumbersmath
Friday the 13th
Hard
JavaScriptdateslanguage_fundamentalsvalidation
Remove Surrounding Duplicate Items
Hard
JavaScriptformattingsortingloops
Sum of Two Numbers in Array Equal to Given Number
Hard
JavaScriptarraysvalidationnumbers
Find Unique Number in Array
Hard
JavaScriptarraysnumberslanguage_fundamentals
Happy Birthday! 🍩
Hard
JavaScriptalgorithmslogicmath
Puzzle Pieces
Hard
JavaScriptarrayshigher_order_functionsvalidation
The Million Dollar Fence
Hard
JavaScriptstringsnumbers
Removing Enemies
Hard
JavaScriptarrayslanguage_fundamentals
Changing Mixed Types
Hard
JavaScriptarraysconditions
Split Item Codes
Hard
JavaScriptstringsregex
Is There an Upward Trend?
Hard
JavaScriptmathlogicarrays
Extending the String Prototype
Hard
JavaScriptlanguage_fundamentalsregexstrings
Name Classes
Hard
JavaScriptclassesobjectslanguage_fundamentals
Censor Words Longer Than Four Characters
Hard
JavaScriptstringsconditions
Fix the Code: Un-Mutating an Array
Hard
JavaScriptbugsscopeloops
The Museum of Incredibly DULL Things
Hard
JavaScriptsortingarraysformatting

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