Posts by celtschk
C (gcc), 32 bytes f(a,b){return a>0?f(b,a-b)+1:0;} Try it online!
I think everything strictly needed to write or judge a solution should never be hidden. If you feel it is too large, think about how to shorten it. Information that is not strictly necessary can b...
If you print some string s without a newline character at the end, instead of print(s,end="") write print(end=s) to save two bytes. Note that this only works for strings, not for other typ...
Bash, 20 18 bytes Saved two bytes by removing the quotes; the code works well without them. echo Hello, `cat`! Try it online!
Given two strings, I define their product as follows: If any of the two strings is empty, the product is the empty string. If the second string consists of a single character, the result ...
Python 3, 76 71 bytes Saved 5 bytes thanks to user def f(p,n):l=[n*p//q for(p,q)in p if n%q<1];return f(p,l[0])if l else n Try it online! This code assumes that the fractions are given a...
Python 3, 69 bytes i="))43,]1-::[i,43,73(%ci(tnirp;%c%s%c=i";print(i%(37,34,i[::-1],34)) Try it online!
C (gcc), 114 bytes f(int n,int*p,int*i,int**o){if(n){int*m=i,k;for(;*m!=*p;++m);k=m-i;f(k,p+1,i,o);f(n-k-1,p+k+1,m+1,o);*(*o)++=*p;}} Try it online! Arguments: n is the length of the arra...
Use pointer arithmetic and \0 with string literals In C, strings are just zero-terminated character arrays, which means you can play tricks with pointer arithmetic. For example, the line char*s=a...
C (gcc), 774 bytes #define S strcat(o, #define I(s)if(n)S s);else{S" ");return;} #define B);break;case n,N,s;char*i,o[999],*d[]={"zero ","one ","two ","three ","four ","five ","six ","seven "...
C (gcc), 232 bytes f(n,w,p){printf("%i bottle%s of beer%s%s",n,"s"+(n<2)," on the wall"+w,p);}main(i){for(i=99;i;){f(i,0,", ");f(i,12,".\n");printf(i>1?"Take one down and pass it around, "...
Reorder expressions in order to save whitespace Consider the following code: if c=='U':c='X' The space between if and c obviously cannot be removed, as that would merge them to the identifier ...
Python 3, 99 bytes r=[*range(26)] a="ABCDEFGHIJKLMNOPQRSTUVWXYZ" for i in r+r[-2::-1]:print(" "*(26-i)+a[:i]+a[i::-1]) Try it online!
C (gcc), 46 bytes f(int*a){return *a<0|a[1]<0||*a==a[1]&f(a+1);} This takes an array that is terminated by a negative number (which is not part of the list content, just like the te...
Python 3, 78 bytes def t(n,*l):d="0+-"[n%3];return d*(not l or n*n) if n*n<2 else t((n+1)//3,1)+d Try it online!
If you have any tips for golfing in Python, add them as answers to this post.
Unlambda, 1 solution Since Unlambda code that does something always contains the backtick character, there cannot be more than one solution. ```.2.5.6i
On my challenge Looping Counter there are several entries like this which contains a function which needs to be called with the right parameters to give the correct output. In this particular case,...
C (gcc), 103 bytes Using a different approach than my previous solution, therefore posting as new answer as suggested here. i;main(){while(i++<100){char s[]="FizzBuzz",*t=s+4*!!(i%3);if(i%5)...
C (gcc), 64 62 bytes Saved 2 bytes thanks to m90 in the comments. i;f(char*s){i=atoi(s)>>4;return'A'+(i&8?i&4?i&2?i%2+3:2:1:0);} Try it online!
Lundin just suggested in a comment under another question that I tag the challenge Looping Counter as kolmogorov-complexity. Now I'm not sure if it actually qualifies for that tag, for the followi...
Python 3, 59 bytes lambda n,m:sum(choices(range(m),k=n))+n from random import* Try it online!
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