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

Given an array of integers, A 1 , A 2 , ..., A n , including negatives and positives, and another integer S. Now we need to find three different integers in the array, whose sum is closest to the given integer S. If there exists more than one solution, any of them is ok. ...
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Understanding MongoDB BSON Document size limit

...r to 20k) So except for truly bizarre situations, it'll work great. And in the exception case or spam, I really don't think you'd want a 20mb object anyway. I think capping trackbacks as 15k or so makes a lot of sense no matter what for performance. Or at least special casing if i...
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How does a debugger work?

...ary the one that can be 'attached' to already running executable. I understand that compiler translates code to machine language, but then how does debugger 'know' what it is being attached to? ...
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Table Naming Dilemma: Singular vs. Plural Names [closed]

... Others have given pretty good answers as far as "standards" go, but I just wanted to add this... Is it possible that "User" (or "Users") is not actually a full description of the data held in the table? Not that you should get too crazy with table names and specificity, but p...
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Difference between a virtual function and a pure virtual function [duplicate]

What is the difference between a pure virtual function and a virtual function? 4 Answers ...
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How to get RelativeLayout working with merge and include?

...rom using several levels of nested LinearLayouts to one RelativeLayout and have come across a few problems that I haven not been able to find a workaround for... ...
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Does height and width not apply to span?

...roblem. If display: block is specified, span stops to be an inline element and an element after it appears on next line. I need an element which is inline, but could be of desired width. – Paul Mar 21 '13 at 17:52 ...
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Confused by python file mode “w+”

... forget this, the f.read() call will try to read from the end of the file, and will return an empty string. share | improve this answer | follow | ...
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Are database triggers evil? [closed]

...y; it's easy to forget they are there until they hurt you with unintended (and very mysterious) consequences. This just means they need to be carefully used for the proper circumstances; which in my experience is limited to relational integrity issues (sometimes with finer granularity than you can...
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HTTP redirect: 301 (permanent) vs. 302 (temporary)

... Status 302 means that the resource is temporarily located somewhere else, and the client/browser should continue requesting the original url. share | improve this answer | f...