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Explain how finding cycle start node in cycle linked list work?
... tortoise) such that Xi = X2i. Let mu represent the number of steps to get from X0 to the start of the cycle, and let lambda represent the length of the cycle. Then i = mu + alambda, and 2i = mu + blambda, where a and b are integers denoting how many times the tortoise and hare went around the cycl...
How to spread django unit tests over multiple files?
...e is no longer a need to create a package. Just name your files test*.py.
From Django 1.7 documentation
When you run your tests, the default behavior of the test utility is
to find all the test cases (that is, subclasses of unittest.TestCase)
in any file whose name begins with test, automat...
Algorithm to find top 10 search terms
...ications"
Closely related reference to the problem at hand which I picked from the above:
Manku, Motwani - "Approximate Frequency Counts over Data Streams" [pdf]
By the way, Motwani, of Stanford, (edit) was an author of the very important "Randomized Algorithms" book. The 11th chapter of this book...
How to efficiently build a tree from a flat structure?
... an ID in the structure. Therefore their could be several trees emerging from these objects.
18 Answers
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Convert java.time.LocalDate into java.util.Date type
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Date date = Date.from(localDate.atStartOfDay(ZoneId.systemDefault()).toInstant());
That assumes your date chooser uses the system default timezone to transform dates into strings.
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Stopping scripters from slamming your website
...This page may also appear if too many anonymous users are viewing our site from the same location. We encourage you to register or login to avoid this." (Adjust the wording appropriately.)
Besides, what are the odds that X people are loading the same page(s) at the same time from one IP? If they're...
What is the difference between the mouseover and mouseenter events?
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You can try out the following example from the jQuery doc page. It's a nice little, interactive demo that makes it very clear and you can actually see for yourself.
var i = 0;
$("div.overout")
.mouseover(function() {
i += 1;
$(this).find("span"...
Defining private module functions in python
...e;-). A single leading underscore means you're not supposed to access it "from the outside" -- two leading underscores (w/o trailing underscores) carry the message even more forcefully... but, in the end, it still depends on social convention and consensus: Python's introspection is forceful enough...
Pick a random value from an enum?
...d answer and that left me with boilerplate code when I needed to randomize from my second Enum. Also, it's easy to forget about SecureRandom sometimes. Thanks.
– Siamaster
Jul 30 '18 at 10:43
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Why was “Avoid Enums Where You Only Need Ints” removed from Android's performance tips?
The section "Avoid Enums Where You Only Need Ints" was removed from the official developer documentation . (See Why doesn't Android use more enums? for the old section content)
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