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Quick Sort Vs Merge Sort [duplicate]
... than merge sort when the data is stored in memory. However, when the data set is huge and is stored on external devices such as a hard drive, merge sort is the clear winner in terms of speed. It minimizes the expensive reads of the external drive and also lends itself well to parallel computing.
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Git - Pushing code to two remotes [duplicate]
... remote. Use the following to add two pushurls to your origin:
git remote set-url --add --push origin git://original/repo.git
git remote set-url --add --push origin git://another/repo.git
So when you push to origin, it will push to both repositories.
UPDATE 1: Git 1.8.0.1 and 1.8.1 (and possibly...
Select n random rows from SQL Server table
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newid()/order by will work, but will be very expensive for large result sets because it has to generate an id for every row, and then sort them.
TABLESAMPLE() is good from a performance standpoint, but you will get clumping of results (all rows on a page will be returned).
For a better performi...
mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
I am trying to select data from a MySQL table, but I get one of the following error messages:
31 Answers
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How can I pair socks from a pile efficiently?
...pile and distribute it by some other metric (e.g. pattern) into the second set of piles
Recursively apply this scheme until you have distributed all socks onto very small piles that you can visually process immediately
This kind of recursive hash partitioning is actually being done by SQL Server w...
Programmatically set height on LayoutParams as density-independent pixels
Is there any way to set the height/width of a LayoutParams as density-independent pixels (dp)? It looks like the height/width, when set programmatically, are in pixels and not dp.
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RegEx backreferences in IntelliJ
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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std::string formatting like sprintf
...rosoft renamed std::snprintf to _snprintf (yes, without std::). MS further set it as deprecated and advises to use _snprintf_s instead, however _snprintf_s won't accept the buffer to be zero or smaller than the formatted output and will not calculate the outputs length if that occurs.
So in order t...
Removing duplicate rows in Notepad++
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@b1naryatr0phy make sure you have "Search Mode" set to "Regular expression", I also updated the pattern so that it can handle windows style line endings
– Grant Peters
May 1 '12 at 13:25
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“Cloning” row or column vectors
... the second section ("repeating columns"), can you explain what the second set of square bracket does, i.e. [[1,2,3]]
– Ant
Jan 9 '17 at 0:51
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