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Algorithm to generate all possible permutations of a list?
Say I have a list of n elements, I know there are n! possible ways to order these elements. What is an algorithm to generate all possible orderings of this list? Example, I have list [a, b, c]. The algorithm would return [[a, b, c], [a, c, b,], [b, a, c], [b, c, a], [c, a, b], [c, b, a]].
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Converting dict to OrderedDict
I am having some trouble using the collections.OrderedDict class. I am using Python 2.7 on Raspbian, the Debian distro for Raspberry Pi. I am trying to print two dictionaries in order for comparison (side-by-side) for a text-adventure. The order is essential to compare accurately.
No matter what I...
Difference between .tagName and .nodeName
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The tagName property is meant specifically for element nodes (type 1 nodes) to get the type of element.
There are several other types of nodes as well (comment, attribute, text, etc.). To get the name of any of the various node types, you can use the nodeName propert...
PHP Timestamp into DateTime
Do you know how I can convert this to a strtotime, or a similar type of value to pass into the DateTime object?
4 Answer...
How to suppress Pandas Future warning ?
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Found this on github...
import warnings
warnings.simplefilter(action='ignore', category=FutureWarning)
import pandas
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How should I call 3 functions in order to execute them one after the other?
...();
doSomethingElse();
doSomethingUsefulThisTime();
they will execute in order. doSomethingElse will not start until doSomething has completed. doSomethingUsefulThisTime, in turn, will not start until doSomethingElse has completed.
Asynchronous Functions
Asynchronous function, however, will not ...
Git update submodules recursively
... How about recursive add submodule? "git submodule add FrameworkA.git" just pull files of FrameworkA.
– complez
Apr 16 '12 at 4:48
2
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Why do this() and super() have to be the first statement in a constructor?
Java requires that if you call this() or super() in a constructor, it must be the first statement. Why?
19 Answers
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Why should I use Deque over Stack?
I need a Stack data structure for my use case. I should be able to push items into the data structure and I only want to retrieve the last item from the Stack. The JavaDoc for Stack says :
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Go build: “Cannot find package” (even though GOPATH is set)
Even though I have GOPATH properly set, I still can't get "go build" or "go run" to find my own packages. What am I doing wrong?
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