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Finding duplicates in O(n) time and O(1) space
...is is what I came up with, which doesn't require the additional sign bit:
for i := 0 to n - 1
while A[A[i]] != A[i]
swap(A[i], A[A[i]])
end while
end for
for i := 0 to n - 1
if A[i] != i then
print A[i]
end if
end for
The first loop permutes the array so that if...
Difference between decimal, float and double in .NET?
... to note is that humans are used to representing non-integers in a decimal form, and expect exact results in decimal representations; not all decimal numbers are exactly representable in binary floating point – 0.1, for example – so if you use a binary floating point value you'll actually get an...
How can I convert a zero-terminated byte array to string?
...Array[:len(byteArray)])
This is equivalent to:
s := string(byteArray)
If for some reason you don't know n, you could use the bytes package to find it, assuming your input doesn't have a null character embedded in it.
n := bytes.Index(byteArray, []byte{0})
Or as icza pointed out, you can use the c...
How to clear the canvas for redrawing
...
Note that for clearRect you need to either have an untransformed context, or keep track of your actual boundaries.
– Phrogz
Apr 2 '11 at 22:56
...
What to do about Eclipse's “No repository found containing: …” error messages?
... the subversive plugins, the m2e Maven integration and the Mylin connector for Trac. For the last couple of weeks I've been trying to install updates, and every time I get back a message like
...
Move an array element from one array position to another
I'm having a hard time figuring out how to move an array element. For example, given the following:
31 Answers
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Designing function f(f(n)) == -n
...ther languages the largest positive integer will overflow, so it will work for all integers except that one.
To make it work for real numbers you need to replace the n in (-1)n with { ceiling(n) if n>0; floor(n) if n<0 }.
In C# (works for any double, except in overflow situations):
static...
Parsing command-line arguments in C?
...Library), which can solve more complex tasks and takes care of stuff like, for example:
-?, --help for help message, including email address
-V, --version for version information
--usage for usage message
Doing it yourself, which I don't recommend for programs that would be given to somebody else,...
SSH library for Java [closed]
Does anyone know of a good library for SSH login from Java.
7 Answers
7
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Is there an equivalent to e.PageX position for 'touchstart' event as there is for click event?
...r fingers, you can find them in other indices of the touches list.
UPDATE FOR NEWER JQUERY:
$(document).on('touchstart', '#box', function(e) {
var xPos = e.originalEvent.touches[0].pageX;
});
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