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How to implement a queue with three stacks?
...SUMMARY
O(1) algorithm is known for 6 stacks
O(1) algorithm is known for 3 stacks, but using lazy evaluation which in practice corresponds to having extra internal data structures, so it does not constitute a solution
People near Sedgewick have confirmed they are not aware of a 3-stack solution wi...
byte + byte = int… why?
...re first cast to integers and the result of addition of two integers is a (32-bit) integer.
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Broken references in Virtualenvs
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375
I found the solution to the problem here, so all credit goes to the author.
The gist is that ...
uppercase first character in a variable with bash
...instead of a subshell.
– Steve
Apr 13 '16 at 23:57
3
This answer assumes the input is all lower c...
Better way to shuffle two numpy arrays in unison
...ook like this:
a = numpy.array([[[ 0., 1., 2.],
[ 3., 4., 5.]],
[[ 6., 7., 8.],
[ 9., 10., 11.]],
[[ 12., 13., 14.],
[ 15., 16., 17.]]])
b = numpy.array([[ 0., 1.],
[ 2...
Remove accents/diacritics in a string in JavaScript
...ormalize(),
const str = "Crème Brulée"
str.normalize("NFD").replace(/[\u0300-\u036f]/g, "")
> "Creme Brulee"
Two things are happening here:
normalize()ing to NFD Unicode normal form decomposes combined graphemes into the combination of simple ones. The è of Crème ends up expressed as e + ...
What is the equivalent of “none” in django templates?
...
134
None, False and True all are available within template tags and filters. None, False, the empty...
How can I check if my python object is a number? [duplicate]
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edited Sep 13 '19 at 14:44
Boris
4,69255 gold badges4242 silver badges5252 bronze badges
a...
Is a GUID unique 100% of the time?
...D is not
guaranteed to be unique, the total
number of unique keys (2128 or
3.4×1038) is so large that the probability of the same number being
generated twice is very small. For
example, consider the observable
universe, which contains about 5×1022
stars; every star could then have
6.8×1015 unive...
How can I use Homebrew to install both Python 2 and 3 on Mac?
I need to be able to switch back and forth between Python 2 and 3. How do I do that using Homebrew as I don't want to mess with path and get into trouble.
Right now I have 2.7 installed through Homebrew.
...