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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.

108 posts · Subscribe
92%
+23 −0
"Hello, World!"

58 answers  ·  posted almost 2 years ago by anna328p‭  ·  last activity 15h ago by __blackjack__‭

83%
+8 −0
Looping counter

18 answers  ·  posted 5mo ago by celtschk‭  ·  last activity 15h ago by south‭

60%
+1 −0
85%
+10 −0
Cumulative Counts

18 answers  ·  posted over 1 year ago by rak1507‭  ·  last activity 1d ago by Moshi‭

66%
+2 −0
Mark my beacons

0 answers  ·  posted 17d ago by Razetime‭  ·  last activity 1d ago by Moshi‭

50%
+0 −0
Rationalise recurring binary

0 answers  ·  posted 1d ago by trichoplax‭  ·  edited 1d ago by trichoplax‭

85%
+10 −0
Can you give me half?

20 answers  ·  posted 8mo ago by Razetime‭  ·  last activity 2d ago by south‭

81%
+7 −0
Determine whether an integer is square-free

13 answers  ·  posted 9mo ago by celtschk‭  ·  last activity 3d ago by Shaggy‭

60%
+1 −0
Chequer checker

1 answer  ·  posted 6d ago by trichoplax‭  ·  edited 4d ago by trichoplax‭

71%
+3 −0
Presumptuous base conversion

5 answers  ·  posted 10d ago by trichoplax‭  ·  last activity 6d ago by Shaggy‭

71%
+3 −0
Make a frequency table (histogram)

10 answers  ·  posted 3mo ago by Razetime‭  ·  last activity 17d ago by Moshi‭

75%
+4 −0
Create a range grid

8 answers  ·  posted 5mo ago by Razetime‭  ·  last activity 20d ago by Shaggy‭

81%
+7 −0
Find n Niven Numbers

7 answers  ·  posted 2mo ago by Razetime‭  ·  last activity 20d ago by Shaggy‭

66%
+6 −2
Multiply complex numbers.

7 answers  ·  posted over 1 year ago by heav‭  ·  last activity 23d ago by __blackjack__‭

87%
+12 −0
Partial Sums of Harmonic Series

11 answers  ·  posted almost 2 years ago by Quintec‭  ·  last activity 1mo ago by south‭

81%
+7 −0
Reduce over the range [1..n]

14 answers  ·  posted 1y ago by user‭  ·  last activity 1mo ago by gifti‭

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

16 answers  ·  posted over 1 year ago by AndrewTheCodegolfer‭  ·  last activity 2mo ago by Olin Lathrop‭

62%
+3 −1
"Hello, {name}!"

15 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 3mo ago by celtschk‭

75%
+4 −0
Keyword golfing

6 answers  ·  posted 8mo ago by Lundin‭  ·  last activity 4mo ago by Lundin‭

75%
+4 −0
Find the IP address class

6 answers  ·  posted 10mo ago by Razetime‭  ·  last activity 4mo ago by torres‭

83%
+8 −0
Golf a FRACTRAN interpreter

8 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 4mo ago by torres‭

77%
+5 −0
A number adder, not a death adder

14 answers  ·  posted 1y ago by AndrewTheCodegolfer‭  ·  last activity 4mo ago by torres‭

80%
+6 −0
Roll n fair dice

9 answers  ·  posted 1y ago by Moshi‭  ·  last activity 4mo ago by south‭

60%
+4 −2
Make $2 + 2 = 5$

18 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 4mo ago by south‭

85%
+10 −0
Are All Elements Equal?

16 answers  ·  posted 1y ago by Razetime‭  ·  last activity 4mo ago by torres‭

83%
+8 −0
Solve Goldbach's Conjecture

10 answers  ·  posted over 1 year ago by Quintec‭  ·  last activity 4mo ago by torres‭

75%
+4 −0
The Pell Numbers

9 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 4mo ago by torres‭

71%
+3 −0
From the smallest seed

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

80%
+6 −0
Word Count Tool

9 answers  ·  posted over 1 year ago by Quintec‭  ·  last activity 4mo ago by torres‭

81%
+7 −0
Collatz conjecture; Count the tries to reach $1$

15 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 4mo ago by torres‭

80%
+6 −0
Write a Deadfish Interpreter

8 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 5mo ago by Zakk‭

85%
+10 −0
It's Hip to be Square

20 answers  ·  posted 1y ago by Shaggy‭  ·  last activity 5mo ago by Zakk‭

86%
+11 −0
Reverse an ASCII string

27 answers  ·  posted almost 2 years ago by moony‭  ·  last activity 6mo ago by celtschk‭

33%
+1 −4
Small integer swapping

7 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 7mo ago by south‭

66%
+2 −0
Make my value binary

14 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 8mo ago by Olin Lathrop‭

80%
+6 −0
Shape of an array

6 answers  ·  posted almost 2 years ago by Adám‭  ·  last activity 8mo ago by south‭

60%
+1 −0
Stairs? Stairs! Stairs.

7 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 8mo ago by radarek‭

81%
+7 −0
Operation "Find The Operator"

5 answers  ·  posted 12mo ago by General Sebast1an‭  ·  last activity 8mo ago by radarek‭

77%
+5 −0
Diagonalized alphabet

7 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 8mo ago by radarek‭

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

20 answers  ·  posted almost 2 years ago by moony‭  ·  last activity 8mo ago by south‭

77%
+5 −0
Given the preorder and the inorder of a tree, output the postorder

2 answers  ·  posted almost 2 years ago by Hakerh400‭  ·  last activity 8mo ago by radarek‭

75%
+4 −0
Compute the determinant

8 answers  ·  posted 1y ago by Moshi‭  ·  last activity 8mo ago by radarek‭

77%
+5 −0
Prime Difference

8 answers  ·  posted almost 2 years ago by Quintec‭  ·  last activity 8mo ago by radarek‭

86%
+11 −0
Weave Strings Together

13 answers  ·  posted almost 2 years ago by Razetime‭  ·  last activity 8mo ago by radarek‭

86%
+11 −0
Merge two strings

8 answers  ·  posted over 1 year ago by rak1507‭  ·  last activity 8mo ago by radarek‭

84%
+9 −0
Coat of Many Colours

6 answers  ·  posted 1y ago by Shaggy‭  ·  last activity 8mo ago by radarek‭

77%
+5 −0
Repeat the characters

14 answers  ·  posted 1y ago by celtschk‭  ·  last activity 8mo ago by south‭

81%
+7 −0
Make my number a set

10 answers  ·  posted over 1 year ago by Wezl‭  ·  last activity 8mo ago by radarek‭

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

4 answers  ·  posted 1y ago by Shaggy‭  ·  last activity 9mo ago by radarek‭

81%
+7 −0
Word Set Square

11 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 9mo ago by radarek‭

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