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Programming Challenges

 
Greenhorn
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Please suggest some online coding/programming sites
 
Saloon Keeper
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Welcome to CodeRanch!

A few that I know of and have used:

  • Advent of Code
  • CodinGame
  • Project Euler
  • HackerRank
  •  
    What could go wrong in a swell place like "The Evil Eye"? Or with this tiny ad?
    Java file APIs (DOC, XLS, PDF, and many more)
    https://products.aspose.com/total/java
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