Kata is now retired.

I know I'm 2 years late, but I saw your comment and noticed you still don't have a solution.

I found it helps to understand the algorithm if you do some examples by hand.
If you encode "Mellow Yellow" and "Melllow Yelow" by hand, you should see a difference.

Java

what language?

Because only python 2 is available, and / is integer division in python 2...

This is a nice simple kata, but has some issues with the test cases:

1. (major) Some solutions use one int variable to track both the east/west difference and the north/south difference. Such solutions would fail to either "eeeeennnnn" or "eeeeesssss" but have passed. For this reason, you need to test specifically for walks of the correct length which place you at a wrong spot directly north-east (or north-west, south-east, south-west) of the start.
2. (minor) Some ridiculously long walks in the test cases could encourage more efficient solutions - some don't check the walk's length until they've scanned through the whole array to check the destination!
3. (minor) Some random tests would be nice too.

Although this code passed the tests, it shouldn't have: Go 5 blocks north, then 5 blocks east and we're not where we started but this code says we are!

Being easy isn't an issue.

There's already a function in Python that returns the type of an object, called type. When the tests for this kata are run, it's just executing check_type(some_object). By giving the existing type function the additional name check_type, that line of code will use the builtin type.

How does this work ?

You're leaking memory in popFirst(): the node that l->head used to point to will never be deallocated.

wow!! I love this solution!! Happy katas! :)

Actually if you use Decimal("...") instead of float("...") for your calculations, just converting the final result back to float type works.

@g964 what do you mean by preloaded section?