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Code-golf is a competition to solve a particular problem in the fewest bytes of source code.
0
votes
Print a Christmas Tree
R, 68 characters
s=sprintf;cat(s('%10s','*'),s('% *s%0*d',9:1,'',1:9*2-1,0),sep='\n')
And here's a parameterized version:
n=12 # Tree height (without star)
s=sprintf;cat(s('%*s',n+1,'*'),s('% *s%0 …
0
votes
Playing the Name Game
R, 189 chars
x=scan(,'');f=function(b)if(grepl(b,x))sub('.','',x)else tolower(sub('^[^aoueiy]*',b,x,i=T));cat(sprintf('%s, %1$s, bo-%s\nBanana-fana fo-%s\nFee-fi-mo-%s\n%1$s!\n',x,f('B'),f('F'),f('M' …
4
votes
Check if a string is a shuffle of twins
R, 113 chars
l=length(x<-charToRaw(scan(,'')));max(apply(combn(l,l/2),2,function(i)if(all(x[i]==x[-i]))rawToChar(x[i])else 0))
Ungolfed (and instead a function that takes the string):
untwin <- fu …
55
votes
Accepted
Tips for golfing in R
Some tips:
In R, it's recommended to use <- over =. For golfing, the
opposite holds since = is shorter...
If you call a function more than once, it is often beneficial to
define a short alias for it …