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How to sort a HashMap in Java [duplicate]
... into a HashMap<TreeSet<Person>>, though the semantics of sets and lists are a bit different.
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How to get a number of random elements from an array?
I am working on 'how to access elements randomly from an array in javascript'. I found many links regarding this. Like:
Get random item from JavaScript array
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Can regular expressions be used to match nested patterns? [duplicate]
...wn number of times? For example, can a regular expression match an opening and closing brace when there are an unknown number of open/close braces nested within the outer braces?
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Graph Algorithm To Find All Connections Between Two Arbitrary Vertices
...l non-cyclical paths between two nodes. This algorithm should be very fast and scale to large graphs (The graph data structure is sparse so it only uses as much memory as it needs to).
I noticed that the graph you specified above has only one edge that is directional (B,E). Was this a typo or is it...
Calculate difference in keys contained in two Python dictionaries
Suppose I have two Python dictionaries - dictA and dictB . I need to find out if there are any keys which are present in dictB but not in dictA . What is the fastest way to go about it?
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How to find and return a duplicate value in array
...s isn't very elegant answer, but I love it. It's beautiful one liner code. And works perfectly fine unless you need to process huge data set.
Looking for faster solution? Here you go!
def find_one_using_hash_map(array)
map = {}
dup = nil
array.each do |v|
map[v] = (map[v] || 0 ) + 1
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What are some alternatives to ReSharper? [closed]
... ReSharper license, but are there any possible alternatives to ReSharper and how would you rate these compared to ReSharper?
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Free XML Formatting tool [closed]
...free XML formatting (indent) tool available where I can past an XML string and have it formatted so I can read the XML document correctly?
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How to create an array containing 1…N
...is what you're looking for, why do you need an array? A simple var n = 45; and then looping from 1..n would do.
– casablanca
Sep 19 '10 at 18:33
3
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How does BLAS get such extreme performance?
...k The Science of Programming Matrix Computations by Robert A. van de Geijn and Enrique S. Quintana-Ortí. They provide a free download version.
BLAS is divided into three levels:
Level 1 defines a set of linear algebra functions that operate on vectors only. These functions benefit from vectoriza...