Good morning, I recently started practicing on LeetCode using Kotlin, and I experienced something we...

# random

[Davide Giuseppe Farella]

Good morning, I recently started practicing on LeetCode using Kotlin, and I experienced something weird.
Given the script posted here, there are 4 test cases on LeetCode, all of them passes in a kts file ( scratch file in a project with Kotlin 1.6.21 ) and only for one of them we have an incorrect output on LeetCode only.
Do you have any idea about it? Test cases in the thread

Untitled.kt

[Davide Giuseppe Farella]

LeetCode vs kts file

[Sam]

For issues like this, I would recommend that you break your program down and debug the individual parts to make sure that they do what you expect. I think the issue that’s causing you to fail the test case is to do with the way you’re converting the linked list into a mutable list. Check that the values first and second each contain the values you expect in the correct order.

[Sam]

Recommended reading: https://ericlippert.com/2014/03/05/how-to-debug-small-programs/

[Sam]

My guess is that the reason it appears to pass when you run a local Kotlin script is that you have the same conversion error when setting up the test inputs, and the two errors cancel each other out.

[Davide Giuseppe Farella]

you have the same conversion error when setting up the test inputs

That’s a pretty nice guess! I’ll read the article as well! Thank you so much

[Roukanken]

If you haven't found an error by now, try this input: [1, 1] and [9]
if I'm looking correctly, that should make it clear what's happening

[Davide Giuseppe Farella]

I'll give it a try after work, thanks

[Davide Giuseppe Farella]

[1, 1] and [9] passes

[Davide Giuseppe Farella]

@Sam, you were right! Fixing the input “formatter” the mistake got revealed 😄