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How to find all combinations of coins when given some dollar value
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Algorithm to return all combinations of k elements from n
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From inside of a Docker container, how do I connect to the localhost of the machine?
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Edit: If you are using Docker-for-mac or Docker-for-Windows 18.03+, just connect to your mysql...
How to generate a random integer number from within a range
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How to calculate time elapsed in bash script?
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edited Dec 12 '15 at 1:12
answered Jan 17 '12 at 23:44
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Modular multiplicative inverse function in Python
...e inverse of a number, i.e. a number y = invmod(x, p) such that x*y == 1 (mod p) ? Google doesn't seem to give any good hints on this.
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How can I autoplay a video using the new embed code style for Youtube?
...deo using the new embed code style for Youtube . I tried adding &autoplay=1 to the url, which worked with the old style, but it didn't work. For example, http://www.youtube.com/embed/JW5meKfy3fY is the embed link, but http://www.youtube.com/embed/JW5meKfy3fY&autoplay=1 doesn't work. Can any...
Numpy argsort - what is it doing?
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According to the documentation
Returns the indices that would sort an array.
2 is the i...
How do I pick randomly from an array?
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Just use Array#sample:
[:foo, :bar].sample # => :foo, or :bar :-)
It is available in Ru...