223
votes
Hyperprogramming: N+N, N×N, N^N all in one
Jelly, 12 bytes
N+N
“(ẹ+)‘FQṖṪỌv
Try it online!
N×N
““((ẹẹ++))‘‘FFQQṖṖṪṪỌỌvv
Try it online!
N^N
...
- 209k
212
votes
Hello, World! (Every other character)
Python 3, 61 bytes
rant="partisn't"
print(("HHeelllloo,, WWoorrlldd!!"""[::2]))
Try it online!
Abusing the fact that print ...
- 2,254
170
votes
I double the source, you double the output!
Python 2, 33 bytes
print len(open(__file__).read())#
Try it online!
Try it doubled
Python 3, 28 bytes
...
- 95.5k
105
votes
I double the source, you double the output!
Jelly, 1 byte
‘
Try it online!
or Try it double!
I have no idea how this works, but apparently it does.
- 58.7k
93
votes
Hyperprogramming: N+N, N×N, N^N all in one
><>, 41 bytes
\<
1:: :
&&* +
i*n n
c&
%:
4l
0(
.i
n}
&?
Try it online: N+N, N*N, N^N. Assumes that the STDIN input is exactly one char.
>&...
- 61.7k
84
votes
I double the source, you double the output!
Google Sheets, 5 Bytes
Anonymous worksheet formula that takes no input and outputs into the cell which holds the formula
=4/(2
As a single formula this evaluates ...
- 8,250
75
votes
Inverse function
Haskell, 11 bytes
f=log
pxe=f
and in reverse order:
f=exp
gol=f
This works without the "comment" trick. Instead each ...
- 35.8k
73
votes
62
votes
62
votes
Hello, World! (Every other character)
Cardinal, 29 bytes
%
"
H
e
l
l
o
,
W
o
r
l
d
!
Try it online!
Removing every other character removes all the linefeeds, which still results in ...
- 196k
59
votes
From Programming Puzzles to Code Golf
Python 2, 48 47 bytes
-1 byte thanks to Erik the Outgolfer
print' 'and'Programming Puzzles'or'Code\40Golf'
Try it online!
...
- 18.4k
58
votes
Code close to the challenge: Sum of integers
Python, distance 3
#Given a set of integers, find the
sum#of all integers in it.
This gives the built-in function sum, which ...
- 144k
55
votes
Code close to the challenge: Sum of integers
Julia, distance 27 26
No comments!
Given(a)=(Set;of;integer; find; [sum(a),all,integer,in][1])
This creates a function called ...
- 24.6k
53
votes
I reverse the source code, you negate the output!
05AB1E, 2 bytes
(1
Try it online!
!enilno ti yrT
( # negate nothing
1 # push 1 (and implictly output it)
<...
- 15.6k
52
votes
Hello, World! (Every other character)
C, 125 bytes
xpxuxtxs( ) { }xuxs ( ) { } main( ) {puts ( "Hello, World!" ) ; } mxaxixn ( ) {xpxuxtxs ( " H e l l o , W o r l d ! " ) ; }
Try it online!
With ...
- 16.5k
52
votes
I double the source, you double the output!
C (gcc), 37 bytes
i;main(){putchar(i+49);}/*
i=1;//*///
The file does not contain a trailing newline.
Doubled version, for syntax highlighting:
...
- 71.4k
51
votes
I double the source, you double the output!
Python 2, 21 bytes
+1
if id:id=0;print 1
Try it online!
Doubled:
+1
if id:id=0;print 1+1
if id:id=0;print 1
Try it online!...
- 144k
48
votes
I double the source, you double the output!
05AB1E, 2 bytes
Original
XO
Try it online!
Doubled
XOXO
Try it online!
Explanation
X pushes 1 to the stack.
O sums the ...
- 52.9k
47
votes
I double the source, you double the output!
Hexagony, 7 bytes
/)!@.).
Prints 1 regularly then 2 doubled.
Try it online! or
Try it doubled online!
Expanded versions:
Regular:
...
- 17.4k
47
votes
I uppercase the source code, you reverse the input!
05AB1E, 1 byte
r
Try it online lowercase or uppercase!
Finally a question which I (a dumb brain) can answer! Thanks for this easy, yet fun challenge! (I do feel ...
- 2,679
42
votes
Build a twisted "Hello world!"
Python 2, 59 bytes
print " Hello, world!"[ 2::]
#rint "T w i s t e r !"[ ::2]
Twisted:
...
- 17.8k
42
votes
Inverse function
APL, 3 bytes
*⊣⍟
This is a function train. Monadic * returns e^x, monadic ...
- 31.2k
42
votes
What are the five most powerful characters in your language?
Python3, 21 27 values
Characters: 3479%
Unique numbers: [1,2,3,4,5,6,7,8,9,11,12,19,20,21,24,29,34,35,36,37,39,43,46,47,49,73,74]...
- 3,762
42
votes
I uppercase the source code, you reverse the input!
Python 3, 61 50 49 48 bytes
-1 thanks to benrg!
r=-1;ʳ=1;ᵖʳᵢⁿᵗ(ᵢⁿᵖᵘᵗ()[::r])
lower-cased / upper-cased
This works because
PEP-3131 was implemented in Python 3....
- 102k
41
votes
I double the source, you double the output!
Braingolf, 1 byte
+
Try it online!
Now we're talkin'!
Outputs 20, or 40 when source is ...
- 11.6k
41
votes
41
votes
Accepted
Create a square of increasing size by replicating the initial code
Pyth, 2 bytes
5
Try it online! Also Try it doubled, tripled!
How does that work?
\n is the command that prints its ...
- 42.3k
38
votes
Accepted
Coding Around The Clock
GolfScript, 11 10 bytes
21;;3#9];6
Uses # as padding character.
12 o'clock
...
- 209k
38
votes
Letter, Number, Symbol, Space, Repeat
Haskell 300 bytes
This code should have no trailing newline. The function m1 takes the input as a Char and returns the answer ...
- 7,424
Only top scored, non community-wiki answers of a minimum length are eligible