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LeetCode

Interview-style coding problems with a judge

Toolora score90Free tier
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Free

Codewars

Coding katas ranked by kyu, in the language you are learning

Toolora score92Free tier
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Free

SpecLeetCodeCodewars
CategoryEducation & LearningEducation & Learning
PricingFree + PremiumFree + Premium
Toolora score90/10092/100
Best foralgorithms, interview, coding, practicecoding, katas, practice, languages
Top features
  • ·Thousands of judged problems
  • ·Contests and discussion
  • ·Company-tagged sets on Premium
  • ·Kyu-ranked challenges
  • ·Dozens of languages
  • ·Compare other solutions