Search found 365 matches

by TripleM
Wed Sep 27, 2017 3:46 am
Forum: News, Suggestions, and FAQ
Topic: Summer 2017 Website Update
Replies: 87
Views: 22155

Re: Summer 2017 Website Update

I just received a new 'Notification', dated today:

Image

Linking me to this post.. from 2012: viewtopic.php?p=30420#p30420

edit - sorry, meant to post this in the bugs thread, though I guess this thread could potentially have some relevance.
by TripleM
Mon Jul 03, 2017 5:38 am
Forum: News, Suggestions, and FAQ
Topic: Suggestion: Color-coding on the progress page
Replies: 2
Views: 1244

Re: Suggestion: Color-coding on the progress page

I use this page a lot to try and decide which problem to tackle next. Sometimes I am in the mood to look for hard ones, sometimes I prefer to stay more easy going. The mouse-over functionality is very nice to see the title, numbers of solvers and the difficulty level. But as programming is all abou...
by TripleM
Fri Feb 12, 2016 10:05 pm
Forum: News, Suggestions, and FAQ
Topic: Project Euler keeps forgetting my login + Requires to fill a captcha on every login
Replies: 6
Views: 1730

Re: Project Euler keeps forgetting my login + Requires to fill a captcha on every login

Yeah, I'm a web dev and have cleaned up serious hacks before (and am well aware of the impact of those EU laws), so I do know. The website stores passwords in a way that can't be retrieved but can be tested; the same can apply to emails. If it's insecure/breaking rules to store emails in that way, t...
by TripleM
Fri Feb 12, 2016 9:30 pm
Forum: News, Suggestions, and FAQ
Topic: Project Euler keeps forgetting my login + Requires to fill a captcha on every login
Replies: 6
Views: 1730

Re: Project Euler keeps forgetting my login + Requires to fill a captcha on every login

Thanks for your reply. I do not block or delete cookies in general, so the reason may be because I am using PEuler from both my desktop machine and my laptop in a different room and so they keep invalidating each other. From what I can see, Google, Wikimedia, Wikia and other sites have no problem i...
by TripleM
Fri Feb 05, 2016 4:53 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 141
Replies: 27
Views: 10646

Re: Problem 141

You can PM me.
by TripleM
Wed Jan 20, 2016 9:13 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 259
Replies: 18
Views: 6585

Re: Problem 259

nicolas.patrois wrote:Are you sure? What about 12345*6789?
12345*6789 < 12345*10000 < 123456789.
by TripleM
Tue Jan 05, 2016 9:46 pm
Forum: Number
Topic: Palindromic Repetitions
Replies: 4
Views: 8645

Re: Palindromic Repetitions

(Note: contains spoiler for the problem in the OP) I'm not sure it does; it contains a number which isn't known to ever become a palindrome, but we're looking for a number which does become a palindrome, but in more than 25 steps. There is a smallest initial value *known* to take more than 25 steps...
by TripleM
Tue Jan 05, 2016 9:24 pm
Forum: News, Suggestions, and FAQ
Topic: Errors/Warnings/Bugs
Replies: 519
Views: 101019

Re: Errors/Warnings/Bugs

I've always found Apple browsers to be a bit finicky when it comes to caching.. it can sometimes take multiple refreshes to clear a cached asset, unlike a single hard refresh on a PC. The new method (sending no-cache headers entirely, meaning every badge on a page needs re-downloading every time the...
by TripleM
Sat Dec 26, 2015 11:24 pm
Forum: Programming languages
Topic: strange PHP behaviour with global array
Replies: 5
Views: 5972

Re: strange PHP behaviour with global array

Hm, I see what you mean. That is strange. It doesn't appear to be anything to do with the count function (or what that function does) - it looks like someone else found the same applies even to an empty function, when a reference to a large array is used: https://gist.github.com/ihabunek/6375653 Edi...
by TripleM
Fri Dec 25, 2015 10:43 pm
Forum: Programming languages
Topic: strange PHP behaviour with global array
Replies: 5
Views: 5972

Re: strange PHP behaviour with global array

While the count function is O(1), it's still several times slower than using a variable. You're calling the count function 10000 times within the loop, so the effect is magnified.
by TripleM
Thu Dec 03, 2015 9:14 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 159
Replies: 18
Views: 6786

Re: Problem 159

Have you taken Tirian's approach of writing a brute-force version that is too slow for N = 1000000 but much easier to prove correct for small N and comparing the answers? That is the best way of debugging this type of problem. If you have, feel free to PM me this brute force program and I can tell y...
by TripleM
Mon Nov 30, 2015 8:51 pm
Forum: Clarifications on Project Euler Problems
Topic: Problem 151
Replies: 27
Views: 10997

Re: Problem 151

I'm not sure what you mean by 'included'. At the start of day two the envelope contains four pieces of paper, like you say - A2, A3, A4, and A5. That doesn't count towards the final answer however; you want to count days where the envelope starts with one piece of paper (excluding the first where th...
by TripleM
Mon Nov 23, 2015 7:25 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 502
Replies: 17
Views: 6669

Re: Problem 502

The 4 places a 1x1 block can sit on top.
by TripleM
Thu Nov 05, 2015 7:37 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 037
Replies: 43
Views: 9965

Re: Problem 037

Additionally, if you're concerned the solution can easily be found by searching, posting methods for finding it in this forum seems to have made things worse..
by TripleM
Wed Oct 21, 2015 4:08 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 165
Replies: 41
Views: 12930

Re: Problem 165

Oliver1978 wrote:Additionally, like always, is double precision enough for this problem?
Without talking specifically about this problem - if you find yourself asking that question, the answer will virtually always be no.
by TripleM
Thu Oct 15, 2015 3:43 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 228
Replies: 6
Views: 2090

Re: Problem 228

Your S3 and S4 look nothing like an equilateral triangle and square.

Have a look at the units.
by TripleM
Mon Oct 05, 2015 12:30 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 283
Replies: 7
Views: 2777

Re: Problem 283

You are asked to count triangles, not triples of integers. There only exists one triangle with sides of lengths 6, 8, and 10 - always has and always will.
by TripleM
Thu Sep 10, 2015 2:20 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 524
Replies: 4
Views: 1417

Re: Problem 524

No. You're ordering the permutations as lists, not as alphanumeric strings.
by TripleM
Mon Aug 24, 2015 4:54 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 090
Replies: 46
Views: 13247

Re: Problem 090

Those are considered different, but your second solution can't display 01, for example, so that's only one solution.

If both of them resulted in being able to display all of the squares, then that would be two solutions.
by TripleM
Mon Aug 03, 2015 4:27 am
Forum: Clarifications on Project Euler Problems
Topic: Problem 093
Replies: 54
Views: 14854

Re: Problem 093

Yes, see the fourth example where * has been used more than once.