BFS or DFS

When should you use one over the other?

If you just have to visit each node once without memory constraints (e.g. number of islands problem), then it doesn't really matter which one you use. It comes down to your personal preference for recursion/stack vs queue.

Title

Script

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book.

Contrary to popular belief, Lorem Ipsum is not simply random text.

  >>> a = [1, 2, 3]
  >>> a[-1]
  3

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