Great kata to learn dynamic programming and to exercise with.

I was being Pythonic when I wrote this. I would agree that x!=0 is more readable. https://docs.python-guide.org/writing/style/

It could equally have been used and would have been more readable IMO. As to why it was not? Perhaps the author preferred a shorter solution, or perhaps they find it just as readable, perhaps perhaps perhaps...

It is part of the loop, and it filters all x that are not a falsy value (0, False, empty string, etc). Look up list comprehension for more details.

can someone tell me what is the role played here by "if x" after for loop in the program

hmm smart:))

What a great kata, from the beginning i was between 43 - 47(for a long time), then 51 for a while, at last...........Alhamdulillah!!
Thanks seased!!

Ohhh, I totally misunderstood the assignment lol. I thought the first instruction would be executed until it hits a hole, then the next, and so on.

Thank you!

...very limited set of instructions, which are executed in an endless loop.

if DR is executed endlessly (i.e. DRDRDR...) it will fall into the hole at (5,5)
if DRD is executed endlessly, it will leave the area on the down side.

Hi all,

How is it that DR is not a solution for the example test case #3? Which is as follows:

FFHFHHF
FFFFFFF
HFFFFFH
FFFFFHH
HHFFFFF
FFFFFHF
FFHFHFF

It'd start from (0, 0) and move down until it hits the H (hole) at (2, 0). So from (1, 0) it moves right till the end of the matrix because there are no holes in that row.

For DR it says: "Your robot fell into a hole at x: 5 y: 5".

I also don't get why would DRD be a valid solution.

Is there someting I'm not getting from the assingment?

Thanks!

Much better than the top one. Cleanest and most intuitive so far.

Still linear though.

Thanks for the hint!
I removed the ambigous test case.