Challenge yourself to code and interview better.

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Use this and you will improve and gain confidence. This applies even if you are already a programmer. The training videos are really high quality.
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I love Coderbyte because it had one of the most simple and intuitive UX's. I loved the instant feedback, being able to see my ranking, as well as other users' solutions.
 

The only coding challenge platform with everything software developers need to go from novice to pro.

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Improve your coding

  • .Algorithm, front-end, back-end, and database challenges
  • .Automated grading and the only platform with Big-O analysis
  • .Over 3 million solutions you can learn from

Ace your interviews

  • .Real-world interview kits to help you prepare
  • .Expert videos and solutions by our team
  • .Career resources and partners
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Most popular code challenges

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Medium - 120,000+ solutions

Have the function BracketMatcher(str) take the str parameter being passed and return 1 if the brackets are correctly matched and each one is accounted...

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Medium - 11,000+ solutions

Have the function TreeConstructor(strArr) take the array of strings stored in strArr, which will contain pairs of integers in the following format: (i1,i2), where i1 represents...

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Easy - 140,000+ solutions

Have the function LongestWord(sen) take the sen parameter being passed and return the longest word in the string. If there are two or more words...

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Easy - 23,000+ solutions

Have the function QuestionsMarks(str) take the str string parameter and check if there are exactly 3 question marks between every pair of two numbers that add up to 10...

Interview kits

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Algorithms Interview Kit
5+ articles - 30+ challenges
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Google Interview Kit
10+ articles - 15+ challenges
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React Interview Kit
6+ challenges