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What is the difference between UTF-8 and ISO-8859-1?
What is the difference between UTF-8 and ISO-8859-1 ?
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Convert a matrix to a 1 dimensional array
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Algorithm for Determining Tic Tac Toe Game Over
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You know a winning move can only happen after X or O has made their most recent move, so you c...
Get the cartesian product of a series of lists?
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Ruby: How to get the first character of a string
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Calendar Recurring/Repeating Events - Best Storage Method
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Code Golf: Collatz Conjecture
Inspired by http://xkcd.com/710/ here is a code golf for it.
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What is the most efficient way of finding all the factors of a number in Python?
...return set(reduce(list.__add__,
([i, n//i] for i in range(1, int(n**0.5) + 1) if n % i == 0)))
This will return all of the factors, very quickly, of a number n.
Why square root as the upper limit?
sqrt(x) * sqrt(x) = x. So if the two factors are the same, they're both the square...