syms x;a=factor(x^5-x^3+x^2-1);
C = textscan(char(regexprep(char(a),'[)*(]','_')), '%s', 'delimiter', '()_');
C = C{1};min=99;l=1;
C(any(cellfun(@isempty,C),2),:) = [];
for i=1:numel(C), if char(C{i}(1))=='^', for j=numel(C)+1:C{i}(2)-48+numel(C)-1,C{j}=strcat(C{i-1},'*1^',num2str(j));end,C{i}='1';end,end;
for i=1:numel(C), K=nchoosek(C,i);
for j=1:numel(K),
M(l,1)= (prod(sym(K(j))));
M(l,2)= (prod(sym( setdiff(C,K(j)) )));
op=length(strfind(regexprep(char(M(l,1)),'[*/^+-]','_'),'_'))+length(strfind(regexprep(char(M(l,2)),'[*/^+-]','_'),'_'));
Many answers get invalidated by an edited question.
One of the reasons might be that I look for loopholes and exploit them.
Examples:
Shortest program whose concatenated program+output is a permutation of the 95 printable ASCII characters (invalidating edit)
Implement division using only addi...
Digits Digging a Dungeon
code-golf simulation numbers
Given a non-decreasing list of one-digit positive integers, you should determine how deep dungeon they will dig.
Before the start of the digging the ground is level.
███ ███ A dungeon with 5 blocks removed and a depth of 3.
███ ███
███ ...
I have created this very complex infographic; I hope my hours of effort will solve this problem.
The only possible exception is if the answer in question is exhibiting one or more obvious loopholes that the question-asker clearly meant to close.
Python 3, 120 bytes
from PIL.Image import*;from PIL.ImageOps import*
i=open(input()).convert('RGB')
i.crop(invert(i).getbbox()).save('o.png')
it Reads the image file name from stdin, and saves the output image as 'o.png'. for example :
echo s2rMqYo.png | python3 script.py
It accepts at leas...
Can you cast the spell?
In Magic: the Gathering, mages (known as "planeswalkers") battle each other by casting spells. Spells cost mana. Five colors of mana exist:
White, represented as {W}
Blue, represented as {U}
Black, represented as {B}
Red, represented as {R}
Green, represented as {G}
...
Adding 7-Segment Displays
code-golfarithmeticnumber
Hey, check this out, I found a new way to add numbers! E.g. 1+1+3+4. Write them out as 7-segment displays:
_
| + | + _| + |_|
| | _| |
(Note that 1 is always written with the two segments on t...
