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Finding three elements in an array whose sum is closest to a given number

... in O(n3) -- that's the brute-force baseline. Is it possible to do better? What if we pick the tuples in a somewhat smarter way? First, we invest some time to sort the array, which costs us an initial penalty of O(n log n). Now we execute this algorithm: for (i in 1..n-2) { j = i+1 // Start rig...
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How do I make an asynchronous GET request in PHP?

... file_get_contents will do what you want $output = file_get_contents('http://www.example.com/'); echo $output; Edit: One way to fire off a GET request and return immediately. Quoted from http://petewarden.typepad.com/searchbrowser/2008/06/how-to-po...
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EC2 instance types's exact network performance?

...tances that support this) do not increase the overall throughput ? This is what I am seeing on c4.large instances, and was looking for some validation. – Abhinav Mar 7 '17 at 9:04 ...
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How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and

... a neat utility to convert a linux private key to Putty format. However, what isn't addressed is that when you save the public key using puttygen it won't work on a linux server. Windows puts some data in different areas and adds line breaks. The Solution: When you get to the public key s...
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Displaying build times in Visual Studio?

... What's the output of this? – Colonel Panic Jan 17 '13 at 15:34 4 ...
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GetManifestResourceStream returns NULL

...ceNames() on MSDN. Simply copy the relevant name, and use that instead of whatever you have defined in the variable 'resourceName'. Notes - the resource name is case sensitive, and if you have incorrectly embedded the resource file, it will not show up in the list returned by the call to GetManif...
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How to get a dependency tree for an artifact?

...ency:tree can be used to see the dependency tree for a given project. But what I need is to see the dependency tree for a 3rd party artifact. ...
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What is the difference between a JavaBean and a POJO?

I'm not sure about the difference. I'm using Hibernate and, in some books, they use JavaBean and POJO as an interchangeable term. I want to know if there is a difference, not just in the Hibernate context, but as general concepts. ...
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When creating HTML emails, should we use html, head, body tags?

...r HTML page here. Your mail client should follow it and should throw away what's not supported or what's insecure like javascript. UPDATE: after several down votes from people that gets angry when you tell them to follow standards, I'll expose some reasons of why following standards could be benef...
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Why does the arrow (->) operator in C exist?

...oted in the comments, this difference between -> and *+. combination is what CRM is referring to as "relaxation of the requirement" in 7.1.8: Except for the relaxation of the requirement that E1 be of pointer type, the expression E1−>MOS is exactly equivalent to (*E1).MOS Later, in K&R ...