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Code-golf is a competition to solve a particular problem in the fewest bytes of source code.

2 votes

Cat goes "Meow"

Python, 62 58 48 - 15 = 48 44 33 bytes Thanks to Unrelated String for -10 bytes! x=input() print(x,*['goes "Meow"'][:"c""at"==x]) 0x61 = a. Try it online! Revision 3: with cat without cat Revision 2: …
Oliver's user avatar
  • 175
1 vote

Shortest code to produce infinite output

Python 3, 18 15 bytes Thanks to DLosc for -3 bytes! while 1:print()
Oliver's user avatar
  • 175
0 votes

Russian Roulette

Python 3, 54 bytes import random;1/random.randrange(5);print'I survived!' On 1/0 it will crash: Traceback (most recent call last): File "<stdin>", line 1, in <module> ZeroDivisionError: integer div …
Oliver's user avatar
  • 175
1 vote

Simple cat program

Python, 14 bytes print(input()) Print input... couldn't be more self-explanatory.
Oliver's user avatar
  • 175
0 votes

Halloween Golf: The 2spooky4me Challenge!

Python, 39 bytes x=int(input());print(f"{x}spooky{x+2}me) Don't remove the int(). That will cause an error. Tested on Python 3.10.1 (v3.10.1:2cd268a3a9, Dec 6 2021, 14:28:59) [Clang 13.0.0 (clang-13 …
Oliver's user avatar
  • 175
1 vote

Convert YYYYMM to MMMYY

Python, 115 bytes m='JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC'.split();d=input();print("%s%s"%(m[int(d[4]+d[5])-1],d[2]+d[3])) Try it online
Oliver's user avatar
  • 175
3 votes

Count the number of ones in an unsigned 16-bit integer

Python, 72 26 bytes Thanks to mathcat for -12 -27 -36 bytes through various simplifications! lambda a:bin(a).count('1') Well, you said statements...
Oliver's user avatar
  • 175
1 vote

Is it an Element?

Python, 229 bytes Thanks to @Neil for the regex - :) import re;bool(re.match("([HNOUVWY]|[CGLP]a|[DNPRSTY]b|[AMST]c|[CMNP][do]|Gd|[BCFGHNRSTX]e|[CHR]f|[AHMORS]g|[BNRT][ah]|[BLNST]i|Bk|[ACFT][lm]|Pm|Sm …
Oliver's user avatar
  • 175
0 votes

The Ackermann function

Python 3.11, 96 bytes def a(m,n): if m==0:return n+1 elif n==0:return a(m-1,1) else:return a(m-1,a(m,n-1)) Ungolfed: def a(m, n): if m == 0: return n + 1 elif n == 0: …
Oliver's user avatar
  • 175
2 votes

Implement an Over function

Python, 27 bytes lambda f,g,a,b:g(f(a),f(b))
Oliver's user avatar
  • 175
0 votes

Is this even or odd?

Python REPL, 14 bytes int(input())%2 Where 0 (falsy) is even, and 1 (truthy) is odd.
Oliver's user avatar
  • 175
0 votes

Is this number evil?

Python, 34 bytes lambda x:not bin(x).count('1')%2 Converts input to bin, then counts 1s, mod 2 (invert because of even=1) Try it online (Python 3.8.0b4) Try it online (OLD) (Python 3.8.0b4)
Oliver's user avatar
  • 175
4 votes

1, 2, Fizz, 4, Buzz

Python, 108 102 bytes Thanks to caird coinheringaahing for -6 bytes! for x in range(1,101): y="" if x%3<1:y="Fizz" if x%5<1:y+="Buzz" y=y or x print(y)
Oliver's user avatar
  • 175