Level Order Tree Traversal in F#

Another common problem I see during my preparation for technical interviews is the Level Order Tree Traversal (or Breadth-First) problem.

I always like to think with my F# hat on when I solve algorithm problem, so here’s an implementation in F# .

Here we have a nested recursive loop function that:

  • yields the value from the nodes on the current level
  • then find all the children of the nodes on the current level and recurse with them

 

Try it Yourself

 

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Yan Cui

I’m an AWS Serverless Hero and the author of Production-Ready Serverless. I have run production workload at scale in AWS for nearly 10 years and I have been an architect or principal engineer with a variety of industries ranging from banking, e-commerce, sports streaming to mobile gaming. I currently work as an independent consultant focused on AWS and serverless.

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