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How to find the kth largest element in an unsorted array of length n in O(n)?
...uickselect) taking O(n) average time, O(n^2) worst case time, and a pretty complicated non-randomized algorithm (called introselect) taking O(n) worst case time. There's some info on Wikipedia, but it's not very good.
Everything you need is in these powerpoint slides. Just to extract the basic algo...
How do I get the AM/PM value from a DateTime?
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– IndieTech Solutions
Feb 1 '16 at 15:01
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How to select a node using XPath if sibling node has a specific value?
...text()="zz"]/following-sibling::cc[1]/text()
Test the Xpath here: http://www.xpathtester.com/obj/b55ec3ac-dfa4-4f44-81e8-f963ea4a0625
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How to obtain the last path segment of a URI
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is that what you are looking for:
URI uri = new URI("http://example.com/foo/bar/42?param=true");
String path = uri.getPath();
String idStr = path.substring(path.lastIndexOf('/') + 1);
int id = Integer.parseInt(idStr);
alternatively
URI uri = new URI("http://example.com/foo/bar/42?param=tru...
Redis: Show database size/size for keys
...multiple databases I have in there consumes how much memory. Redis' INFO command just shows me the total size and the number of keys per database which doesn't give me much insight... So any tools/ideas that give me more information when monitoring the redis server would be appreciated.
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How to resize the iPhone/iPad Simulator?
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zoom options are greyed out... stackoverflow.com/questions/5142132/…
– Konstantin Salavatov
Jun 8 '11 at 15:48
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Facebook development in localhost
...lect website)
Set the Site URL field (NOT the App Domains field) to http://www.localhost:3000 (this address is for Ruby on Rails, change as needed)
In your application initializer, put in code to detect the environment
Sample Rails 3 code
if Rails.env == 'development' || Rails.env == 't...
How to find issues that at some point has been assigned to you?
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Add default value of datetime field in SQL Server to a timestamp
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I tried this one but I get 0001-01-01T00:00:00 instead of the current date
– Swaleh Matongwa
Aug 25 at 9:38
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Convert python datetime to epoch with strftime
... since epoch you could do it explicitly:
>>> (datetime.datetime(2012,04,01,0,0) - datetime.datetime(1970,1,1)).total_seconds()
1333238400.0
In Python 3.3+ you can use timestamp() instead:
>>> datetime.datetime(2012,4,1,0,0).timestamp()
1333234800.0
Why you should not use da...