Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs

Dashboard
Notifications
Mark all as read
Challenges

Code challenges of all types. For questions about golfing, bowling, etc, use Q&A. For questions about this community, use Meta. To get feedback on a challenge before posting it, use Sandbox.

96 posts · Subscribe
80%
+6 −0
Reduce over the range [1..n]

13 answers  ·  posted 5mo ago by user‭  ·  last activity 11h ago by south‭

84%
+9 −0
Coat of Many Colours

6 answers  ·  posted 5mo ago by Shaggy‭  ·  last activity 23h ago by radarek‭

92%
+21 −0
"Hello, World!"

54 answers  ·  posted 1y ago by anna328p‭  ·  last activity 1d ago by south‭

77%
+5 −0
Repeat the characters

14 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 1d ago by south‭

84%
+9 −0
Are All Elements Equal?

14 answers  ·  posted 5mo ago by Razetime‭  ·  last activity 1d ago by south‭

63%
+5 −2
Multiply complex numbers.

5 answers  ·  posted 7mo ago by heav‭  ·  last activity 1d ago by south‭

75%
+4 −0
A number adder, not a death adder

11 answers  ·  posted 7mo ago by AndrewTheCodegolfer‭  ·  last activity 3d ago by radarek‭

81%
+7 −0
Evens or Odds - you know this one

14 answers  ·  posted 7mo ago by AndrewTheCodegolfer‭  ·  last activity 3d ago by radarek‭

85%
+10 −0
Weave Strings Together

13 answers  ·  posted 1y ago by Razetime‭  ·  last activity 3d ago by radarek‭

75%
+4 −0
Write a Deadfish Interpreter

5 answers  ·  posted 12mo ago by Razetime‭  ·  last activity 3d ago by radarek‭

81%
+7 −0
Make my number a set

10 answers  ·  posted 9mo ago by Wezl‭  ·  last activity 3d ago by radarek‭

33%
+1 −4
Small integer swapping

6 answers  ·  posted 5mo ago by IDoYTSoSubHaha‭  ·  last activity 4d ago by radarek‭

77%
+5 −0
Word Count Tool

5 answers  ·  posted 7mo ago by Quintec‭  ·  last activity 4d ago by radarek‭

75%
+4 −0
Digit Sum Integer Sequence (working title)

4 answers  ·  posted 4mo ago by Shaggy‭  ·  last activity 5d ago by radarek‭

77%
+5 −0
Diagonalized alphabet

7 answers  ·  posted 7mo ago by Razetime‭  ·  last activity 5d ago by radarek‭

81%
+7 −0
Word Set Square

11 answers  ·  posted 11mo ago by Razetime‭  ·  last activity 6d ago by radarek‭

84%
+9 −0
Cumulative Counts

11 answers  ·  posted 9mo ago by rak1507‭  ·  last activity 6d ago by radarek‭

81%
+7 −0
Bytes to Segfault

10 answers  ·  posted 1y ago by moony‭  ·  last activity 7d ago by radarek‭

71%
+3 −0
Generalized Sort

6 answers  ·  posted 5mo ago by Moshi‭  ·  last activity 12d ago by radarek‭

71%
+3 −0
Determine whether an integer is square-free

6 answers  ·  posted 16d ago by celtschk‭  ·  last activity 13d ago by Moshi‭

80%
+6 −0
Golf golf challenge

5 answers  ·  posted 2mo ago by Lundin‭  ·  last activity 14d ago by radarek‭

77%
+5 −0
Roll n fair dice

6 answers  ·  posted 5mo ago by Moshi‭  ·  last activity 14d ago by radarek‭

87%
+12 −0
Evaluate a single variable polynomial equation

19 answers  ·  posted 1y ago by moony‭  ·  last activity 16d ago by radarek‭

80%
+6 −0
Operation "Find The Operator"

4 answers  ·  posted 4mo ago by IDoYTSoSubHaha‭  ·  last activity 1mo ago by snail_‭

71%
+3 −0
Find the IP address class

5 answers  ·  posted 1mo ago by Razetime‭  ·  last activity 1mo ago by celtschk‭

84%
+9 −0
1, 2, Fizz, 4, Buzz!

20 answers  ·  posted 1y ago by Dion‭  ·  last activity 2mo ago by celtschk‭

71%
+3 −0
Implement Rule 110

1 answer  ·  posted 2mo ago by celtschk‭  ·  last activity 2mo ago by Moshi‭

66%
+2 −0
Compute the determinant

6 answers  ·  posted 5mo ago by Moshi‭  ·  last activity 2mo ago by user‭

40%
+0 −1
Tiny Turing-completeness

0 answers  ·  posted 2mo ago by AndrewTheCodegolfer‭  ·  edited 2mo ago by AndrewTheCodegolfer‭

77%
+5 −0
99 Shortened Bottles of Beer

13 answers  ·  posted 6mo ago by IDoYTSoSubHaha‭  ·  last activity 2mo ago by IDoYTSoSubHaha‭

57%
+2 −1
"Hello, {name}!"

14 answers  ·  posted 5mo ago by IDoYTSoSubHaha‭  ·  last activity 3mo ago by Shaggy‭

77%
+5 −0
Collatz conjecture; Count the tries to reach $1$

11 answers  ·  posted 4mo ago by IDoYTSoSubHaha‭  ·  last activity 3mo ago by smlckz‭

71%
+3 −0
Caesar shift cipher

7 answers  ·  posted 6mo ago by IDoYTSoSubHaha‭  ·  edited 3mo ago by IDoYTSoSubHaha‭

57%
+2 −1
Make $2 + 2 = 5$

11 answers  ·  posted 5mo ago by IDoYTSoSubHaha‭  ·  last activity 3mo ago by IDoYTSoSubHaha‭

85%
+10 −0
Reverse an ASCII string

25 answers  ·  posted 1y ago by moony‭  ·  last activity 3mo ago by IDoYTSoSubHaha‭

66%
+2 −0
Run-length encode a byte sequence

2 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 3mo ago by Moshi‭

66%
+2 −0
Convert integer to English

3 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 4mo ago by Moshi‭

71%
+3 −0
Find good coalitions

2 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 4mo ago by Moshi‭

81%
+7 −0
Truthify an array

10 answers  ·  posted 1y ago by Razetime‭  ·  last activity 4mo ago by IDoYTSoSubHaha‭

84%
+9 −0
Obligatory Quine Challenge

9 answers  ·  posted 1y ago by ATaco‭  ·  last activity 4mo ago by IDoYTSoSubHaha‭

66%
+2 −0
Encode and decode floating point integers

2 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 4mo ago by IDoYTSoSubHaha‭

66%
+2 −0
77%
+5 −0
Recreate the Stack Overflow logo

2 answers  ·  posted 7mo ago by IDoYTSoSubHaha‭  ·  last activity 4mo ago by Anonymous‭

75%
+4 −0
The Ludic Numbers

3 answers  ·  posted 4mo ago by Razetime‭  ·  last activity 4mo ago by IDoYTSoSubHaha‭

75%
+4 −0
Decode periodic decimal fractions

2 answers  ·  posted 4mo ago by celtschk‭  ·  edited 4mo ago by IDoYTSoSubHaha‭

60%
+1 −0
Stairs? Stairs! Stairs.

6 answers  ·  posted 5mo ago by IDoYTSoSubHaha‭  ·  last activity 4mo ago by A username‭

66%
+2 −0
Reverse your quine

4 answers  ·  posted 4mo ago by IDoYTSoSubHaha‭  ·  last activity 4mo ago by celtschk‭

83%
+8 −0
It's Hip to be Square

14 answers  ·  posted 6mo ago by Shaggy‭  ·  last activity 4mo ago by user‭

66%
+2 −0
Expand a polynomial

4 answers  ·  posted 4mo ago by Moshi‭  ·  last activity 4mo ago by Moshi‭

71%
+3 −0
Abbreviate everything

3 answers  ·  posted 4mo ago by IDoYTSoSubHaha‭  ·  last activity 4mo ago by Hakerh400‭

This community is part of the Codidact network. We have other communities too — take a look!

You can also join us in chat!

Want to advertise this community? Use our templates!

Like what we're doing? Support us! Donate