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