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How to implement a queue using two stacks?
...he bottle and hold it upside down so that all the values should reverse in order ?
Yes we can do that, but that's a bottle. To do the same process, we need to have a second stack that which is going to store the first stack elements in reverse order. Let's put our populated stack to the left and ...
What's the fastest algorithm for sorting a linked list?
... data is a comparison sort of an almost sorted list with k elements out of order. This can be sorted in O ( kn ) operations.
Copying the list to an array and back would be O(N), so any sorting algorithm can be used if space is not an issue.
For example, given a linked list containing uint_8, this ...
How to implement the factory method pattern in C++ correctly
...want is for everything to be obligatorily explicit, use C; the tradeoff is orders of magnitude less problems. I think it is unfair you vote down a good recommendation.
– TheCppZoo
Jun 12 '15 at 23:47
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Get unique values from a list in python [duplicate]
...nt(output)
As it has been pointed out, sets do not maintain the original order. If you need that, you should look for an ordered set implementation (see this question for more).
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Plugin execution not covered by lifecycle configuration (JBossas 7 EAR archetype)
...ome up with different options to provide this metadata information and the order of preference is as below(highest to lowest)
pom.xml file of the project
parent, grand-parent and so on pom.xml files
[m2e 1.2+] workspace preferences
installed m2e extensions
[m2e 1.1+] lifecycle mapping metadata pro...
Interface vs Base class
... mixin interface that
allows a class to declare that its
instances are ordered with respect to
other mutually comparable objects.
Interfaces allow the construction of nonhierarchical type
frameworks. Type hierarchies are
great for organizing some things, but
other things don’t fall n...
sendmail: how to configure sendmail on ubuntu? [closed]
...are located at the following (in case you want to update them manually):
/etc/mail/sendmail.conf
/etc/cron.d/sendmail
/etc/mail/sendmail.mc
You can test sendmail to see if it is properly configured and setup by typing the following into the command line:
$ echo "My test email being sent from sen...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...that could be a computer, a phone, or a toaster. It HAS to be efficient in order to run under these conditions effectively.
Python and Ruby are run in an environment controlled by the developer/deployer. A beefy server or desktop system generally where the limiting factor will be things like memory...
How to get the parents of a Python class?
...
Usefully, this gives you all ancestor classes in the "method resolution order" -- i.e. the order in which the ancestors will be checked when resolving a method (or, actually, any other attribute -- methods and other attributes live in the same namespace in Python, after all;-).
...
Object.getOwnPropertyNames vs Object.keys
... least with nodejs) "getOwnPropertyNames" function does not guarantee keys order, that's why I usually use "keys" function :
Object.keys(o).forEach(function(k) {
if (!o.propertyIsEnumerable(k)) return;
// do something...
});
...