Posts by trichoplax
Convert a matrix or grid of digits to its antitranspose. For a square matrix , this is its reflection in its antidiagonal. More generally, for a rectangular matrix, this is its reflection in its sk...
Given a string, convert all of its letters using ROT13, and all of its digits using ROT5. This is sometimes referred to as ROT13.5. Input A sequence of printable ASCII characters (character cod...
Rust, 236 184 166 142 bytes |i:u64|{let s=0x101010101010101;let(a,b,c,d)=(i&252*s,i&254*s,i&127*s,i&63*s);(i|a<<6|b<<15|c<<17|d<<10|d>>6|c>>15|b...
Given a sequence of lower case letters, sort them into order of height. Heights The heights of letters are dependent on font, so for this challenge the height order to be used is as defined below...
Connect opposite corners of a rectangle of characters without putting 4 characters in a row. Input Two numbers, W and H, representing the width and height of the rectangle Each number will be ...
Given a radius R, output a text representation of a circle. Input A positive integer R (strictly greater than zero) You do not need to handle values of R greater than 32 Output A square ...
Given a word that can be rotated by 180 degrees (a half turn) about at least one of its 3 axes and continue to be composed of English alphabet letters, output one of its rotated forms. The 3 rotat...
Since the examples I've given in the question are deliberately brief, they don't demonstrate the benefit of hiding a large block of text. I'm giving an example in this answer of one of my own chall...
I've recently started experimenting with hiding some of the sections in a challenge, using an expandable <details> tag. This seems to have some advantages, but I'm interested to hear how peop...
Given a string of printable ASCII characters, convert them all to lowercase, except not just the letters. ASCII characters that are letters have a bit in their binary representation that is 0 for ...
Given a sequence of letters, omit those with the highest or lowest pop count. Terminology The pop count or population count of a binary string is the number of 1s in it. For this challenge, the ...
Given a sequence of letters, output only the vowels. Input A sequence of letters This may be a string or any ordered data structure of characters (provided it is consistent between inputs) Th...
Given an integer $N$ in balanced quinary, output the first $N$ characters of your source code if $N$ is positive, or the last $-N$ characters of your source code if $N$ is negative. Terminology ...
If you're not required to use the standard cpython implementation of python, you can usually get a significant speed increase by running your code with PyPy.
Python 3, 319 318 bytes print('riBfig,barBbilBdewBmulBtayBabiu,bael,date,lime,lulo,neem,noni,pear,pili,plum,rimu,sloe,sorb,yuzu,bearBblueBcranBcrowBemu BhackBjuneBlimeBpineBraspBwineBwolfByew Back...
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