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What is the fastest way to compare two sets in Java?
... specific cases where:
the sets are both sorted
both sorted in the same order
The following code assumes that both sets are based on the records comparable. A similar method could be based on on a Comparator.
public class SortedSetComparitor <Foo extends Comparable<Foo>>
...
John Carmack's Unusual Fast Inverse Square Root (Quake III)
.....discarded...]
And the task has now came down to calculate a0 and a1 in order for y to have the least difference from the exact value. They have calculated that the most appropriate values are:
a0 = 0x5f375a86
a1 = -0.5
So when you put this into equation you get:
y = 0x5f375a86 - 0.5*x
Whic...
What is the difference between JDK dynamic proxy and CGLib?
...n does not implement an interface, in that case we uses inheritance:
In order to generate such proxies, Spring uses a third party library called CGLib.
CGLib (Code Generation Library) is built on top of ASM, this is mainly used the generate proxy extending bean and adds bean behavior in the p...
Is Java “pass-by-reference” or “pass-by-value”?
...e get to the Java implementation:
Values go on and off the stack in a nice orderly fashion, like a stack of plates at a cafeteria.
Memory in the heap (also known as dynamic memory) is haphazard and disorganized. The JVM just finds space wherever it can, and frees it up as the variables that use it a...
List comprehension: Returning two (or more) items for each item
...I used to find them a little confusing because I kept trying to invert the order.
– DSM
Aug 8 '12 at 17:07
1
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jQuery UI dialog positioning
I am trying to use the jQuery dialog UI library in order to position a dialog next to some text when it is hovered over. The jQuery dialog takes a position parameter which is measured from the top left corner of the current viewport (in other words, [0, 0] will always put it in the upper left h...
How to access maven.build.timestamp for resource filtering
...
In order to enrich the Stackoverflow content for others, that like me, found this post as a way to solve the "problem" of ${maven.build.timestamp}. This is not a maven bug, but an expected behavior of m2e, as can be seen in this...
Select random lines from a file
...
If you just need a random set of lines, not in a random order, then shuf is very inefficient (for big file): better is to do reservoir sampling, as in this answer.
– petrelharp
Sep 6 '15 at 23:24
...
How do I close a connection early?
...ogle.com');
ob_end_flush();flush();//really send content, can't change the order:1.ob buffer to normal buffer, 2.normal buffer to output
//continue do something on server side
ob_start();
sleep(5);//the user won't wait for the 5 seconds
echo 'for diyism';//user can't see this
file_put_contents('/tm...
What is the difference between const int*, const int * const, and int const *?
...ever, to me it seems kind of backwards to avoid a nice language feature in order to keep using an exceptional syntactical rule (about "const" placement), rather than avoiding using the exceptional syntactic rule so you can safely make use of this language feature.
– T.E.D.
...