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Algorithm to find Largest prime factor of a number
...factorisation. It makes use of the identity N = (a + b)(a - b) = a^2 - b^2 and is easy to understand and implement. Unfortunately it's not very fast in general.
The best known method for factoring numbers up to 100 digits long is the Quadratic sieve. As a bonus, part of the algorithm is easily done...
Unbound classpath container in Eclipse
I have checked out a project using Subversive for Eclipse and I am getting the following errors:
13 Answers
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Git branch strategy for small dev team [closed]
We have a web app that we update and release almost daily. We use git as our VCS, and our current branching strategy is very simple and broken: we have a master branch and we check changes that we 'feel good about' into it. This works, but only until we check in a breaking change.
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How to split a column into two columns?
I have a data frame with one column and I'd like to split it into two columns, with one column header as ' fips' and the other 'row'
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Logical XOR operator in C++?
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Note that this only works for booleans. And ^ would work perfectly well there. 2 !=1 => 1 which is not what you want! as LiraNuna says, putting a ! infront of both sides solves that problem. but again, then you can use bitwise ^...
– Brian...
Difference between volatile and synchronized in Java
... am wondering at the difference between declaring a variable as volatile and always accessing the variable in a synchronized(this) block in Java?
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How can I ensure that a division of integers is always rounded up?
...you try to do a "clever" trick, odds are good that you've made a mistake. And when a flaw is found, changing the code to fix the flaw without considering whether the fix breaks something else is not a good problem-solving technique. So far we've had I think five different incorrect integer arithme...
How to use UIScrollView in Storyboard
I have a scroll view with content that is 1000px tall and would like to be able to lay it out for easy design on the storyboard.
I know it can be done programmatically but I really want to be able to see it visually. Every time I put a scroll view on a view controller it won't scroll. Is it possib...
Interview question: Check if one string is a rotation of other string [closed]
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First make sure s1 and s2 are of the same length. Then check to see if s2 is a substring of s1 concatenated with s1:
algorithm checkRotation(string s1, string s2)
if( len(s1) != len(s2))
return false
if( substring(s2,concat(s1,s1))
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How can I use “:” as an AWK field separator?
Given the following command,
8 Answers
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