Robot on a ladder
code-golf counting
Background
I have a ladder leaning on a wall, and a remote-controlled robot that can climb it.
I can send three different commands to the robot:
UP: the robot takes one step upwards. If it was on the highest step, it trips over, falls down and explodes....
I have some lit files I want to convert from mircrosoft reader files to something my other devices can read. My friend says I should have clit, in
$ which clit
/usr/bin/clit
but I cannot find it. I tried locate clit but the results are unrelated. So then I tried sudo apt-get install clit but ...
In mathematics, the prime-counting function is the function counting the number of prime numbers less than or equal to some real number x. It is denoted by (unrelated to the number π).
== History ==
Of great interest in number theory is the growth rate of the prime-counting function. It was conjectured in the end of the 18th century by Gauss and by Legendre to be approximately
in the sense that
This statement is the prime number theorem. An equivalent statement is
where li is the logarithmic integral function. The prime number theorem was first proved in 1896 by Jacques Hadamard and by Charles...
Expand a bash brace expansion
code-golf string
For mostly historical reasons, bash is quite a hodge-podge of syntax and programming paradigms - this can make it awkward and sometimes frustrating to golf in. However it does have a few tricks up its sleeve that can often make it competitive with...
![In a cavern deep below the Earth, Ayn Rand, Paul Ryan, Rand Paul, Ann Druyan, Paul Rudd, Alan Alda, and Duran Duran meet together in the Secret Council of /(b[plurandy]+b ?){2}/i.](http://imgs.xkcd.com/comics/ayn_random.png "In a cavern deep below the Earth, Ayn Rand, Paul Ryan, Rand Paul, Ann Druyan, Paul Rudd, Alan Alda, and Duran Duran meet together in the Secret Council of /(b[plurandy]+b ?){2}/i.")
A highly composite number is a positive integer that has more divisors than any smaller positive integer has. This is OEIS sequence A002182. Its first 20 terms are
1, 2, 4, 6, 12, 24, 36, 48, 60, 120, 180, 240, 360, 720, 840, 1260, 1680, 2520, 5040, 7560
For example, 4 is in the sequence becau...
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Task description
Sometimes, you really need to fit something you’re writing in a small space. It may be tempting to drop the vowels and wrt lk ths – and failing that, who really needs spaces? Thssprfctlrdbl!†
Write a function or program that removes vowels, and then spaces, and than any charact...
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Given an image, output the width in pixels of a full vertical section (if one exists). If no vertical section exists, output 0.
Input may be provided as a local file or a nested array. If you choose to take input as a nested array, white pixels should be represented by a truthy value while non-w...
