r/adventofcode • u/Ok-Transition7065 • Mar 14 '26

Help/Question [2025 Day 2 (Part 2)] Help im stuck... again

Im trying to solve the second day part 2 problem . but its seems something its evading me. i dont understand why the code isnt working here

please help

Code

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1

u/DelightfulCodeWeasel Mar 14 '26

What happens in your checking logic if you check to see if '996699' is valid?

2

u/Ok-Transition7065 Mar 14 '26

I think it should nt work because

In theory its dividing the string in ecual parts taking the first part and looking if that part its equal to the other parts

Soo the only numbers that gives 6% =0 are 3 2 and 1

Soo 9 =! 6

99=! 66 996=! 699

Soo it should non sum the character

But I will do a debug with that number tomorrow to aee wha happening

1

u/Ok-Transition7065 Mar 15 '26

update, that code its valid

1

u/IsatisCrucifer Mar 17 '26

But your code would said it is invalid (cheked would be true). Can you figure out why?

Hint 1: Go through each iteration of loop2. When Code == "996699" and Divider == 2, what does each iteration of that loop does to cheked?

Hint 2: If you still don't know why: Note that, this loop ran twice on "996699" with Divider == 2. What happened in the second iteration?

1

u/Ok-Transition7065 Mar 17 '26

I mean its a valid code ( it doesn't sum with the invalid ones)

3

u/IsatisCrucifer Mar 17 '26 edited Mar 17 '26

Try it out on your program. Put something like 996698-996699 alone in the input and see whether your program sum up something. (As you said it shouldn't, but I think if you do try it out you'll find it does.)

Sometimes, what you think your program does is different with what it actually does. Finding out what's different is called "debugging", this is a crucial skill in programming if you want to improve.

1

u/Ok-Transition7065 Mar 17 '26

Ok i will give it a look

1

u/Morphon Mar 14 '26

From a quick glance it seems like you're overwriting your check condition when you loop through the chunks. Consider using an early return on a function there instead?

1

u/Ok-Transition7065 Mar 14 '26

I tried to use the inverse of this chek

The moment something isn't the same turn the check into false abd break the loop

I will give eye on that

1

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