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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.

103 posts · Subscribe
87%
+12 −0
Partial Sums of Harmonic Series

11 answers  ·  posted almost 2 years ago by Quintec‭  ·  last activity 23h ago by south‭

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

9 answers  ·  posted 2mo ago by Razetime‭  ·  last activity 1d ago by south‭

75%
+4 −0
Find n Niven Numbers

3 answers  ·  posted 7d ago by Razetime‭  ·  last activity 1d ago by gifti‭

85%
+10 −0
Cumulative Counts

17 answers  ·  posted over 1 year ago by rak1507‭  ·  last activity 1d ago by gifti‭

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

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

80%
+6 −0
Determine whether an integer is square-free

11 answers  ·  posted 8mo ago by celtschk‭  ·  last activity 1d ago by gifti‭

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

16 answers  ·  posted 1y ago by AndrewTheCodegolfer‭  ·  last activity 9d ago by Olin Lathrop‭

62%
+3 −1
"Hello, {name}!"

15 answers  ·  posted 12mo ago by General Sebast1an‭  ·  last activity 2mo ago by celtschk‭

85%
+10 −0
Can you give me half?

19 answers  ·  posted 6mo ago by Razetime‭  ·  last activity 2mo ago by Lundin‭

92%
+23 −0
"Hello, World!"

56 answers  ·  posted almost 2 years ago by anna328p‭  ·  last activity 2mo ago by danibarker‭

75%
+4 −0
Keyword golfing

6 answers  ·  posted 7mo ago by Lundin‭  ·  last activity 2mo ago by Lundin‭

75%
+4 −0
Find the IP address class

6 answers  ·  posted 8mo ago by Razetime‭  ·  last activity 2mo ago by torres‭

83%
+8 −0
Golf a FRACTRAN interpreter

8 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 2mo ago by torres‭

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

14 answers  ·  posted 1y ago by AndrewTheCodegolfer‭  ·  last activity 2mo ago by torres‭

80%
+6 −0
Roll n fair dice

9 answers  ·  posted 12mo ago by Moshi‭  ·  last activity 3mo ago by south‭

60%
+4 −2
Make $2 + 2 = 5$

18 answers  ·  posted 12mo ago by General Sebast1an‭  ·  last activity 3mo ago by south‭

85%
+10 −0
Are All Elements Equal?

16 answers  ·  posted 1y ago by Razetime‭  ·  last activity 3mo ago by torres‭

83%
+8 −0
Solve Goldbach's Conjecture

10 answers  ·  posted over 1 year ago by Quintec‭  ·  last activity 3mo ago by torres‭

75%
+4 −0
The Pell Numbers

9 answers  ·  posted over 1 year ago by Razetime‭  ·  last activity 3mo ago by torres‭

80%
+6 −0
Looping counter

14 answers  ·  posted 4mo ago by celtschk‭  ·  last activity 3mo ago by torres‭

66%
+2 −0
From the smallest seed

2 answers  ·  posted 3mo ago by Moshi‭  ·  last activity 3mo ago by orthoplex‭

80%
+6 −0
Word Count Tool

9 answers  ·  posted 1y ago by Quintec‭  ·  last activity 3mo ago by torres‭

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

15 answers  ·  posted 11mo ago by General Sebast1an‭  ·  last activity 3mo ago by torres‭

75%
+4 −0
Create a range grid

7 answers  ·  posted 4mo ago by Razetime‭  ·  last activity 4mo ago by south‭

80%
+6 −0
Write a Deadfish Interpreter

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

84%
+9 −0
It's Hip to be Square

20 answers  ·  posted 1y ago by Shaggy‭  ·  last activity 4mo ago by Zakk‭

86%
+11 −0
Reverse an ASCII string

27 answers  ·  posted over 1 year ago by moony‭  ·  last activity 4mo ago by celtschk‭

33%
+1 −4
Small integer swapping

7 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 6mo ago by south‭

66%
+2 −0
Make my value binary

14 answers  ·  posted 12mo ago by General Sebast1an‭  ·  last activity 6mo ago by Olin Lathrop‭

80%
+6 −0
Shape of an array

6 answers  ·  posted over 1 year ago by Adám‭  ·  last activity 6mo ago by south‭

60%
+1 −0
Stairs? Stairs! Stairs.

7 answers  ·  posted 12mo ago by General Sebast1an‭  ·  last activity 7mo ago by radarek‭

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

5 answers  ·  posted 11mo ago by General Sebast1an‭  ·  last activity 7mo ago by radarek‭

77%
+5 −0
Diagonalized alphabet

7 answers  ·  posted 1y ago by Razetime‭  ·  last activity 7mo ago by radarek‭

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

20 answers  ·  posted almost 2 years ago by moony‭  ·  last activity 7mo ago by south‭

75%
+4 −0
Given the preorder and the inorder of a tree, output the postorder

2 answers  ·  posted over 1 year ago by Hakerh400‭  ·  last activity 7mo ago by radarek‭

75%
+4 −0
Compute the determinant

8 answers  ·  posted 12mo ago by Moshi‭  ·  last activity 7mo ago by radarek‭

75%
+4 −0
Prime Difference

8 answers  ·  posted almost 2 years ago by Quintec‭  ·  last activity 7mo ago by radarek‭

85%
+10 −0
Weave Strings Together

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

86%
+11 −0
Merge two strings

8 answers  ·  posted over 1 year ago by rak1507‭  ·  last activity 7mo ago by radarek‭

84%
+9 −0
Coat of Many Colours

6 answers  ·  posted 1y ago by Shaggy‭  ·  last activity 7mo ago by radarek‭

77%
+5 −0
Repeat the characters

14 answers  ·  posted 11mo ago by celtschk‭  ·  last activity 7mo ago by south‭

63%
+5 −2
Multiply complex numbers.

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

81%
+7 −0
Make my number a set

10 answers  ·  posted over 1 year ago by Wezl‭  ·  last activity 7mo ago by radarek‭

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

4 answers  ·  posted 11mo ago by Shaggy‭  ·  last activity 7mo ago by radarek‭

81%
+7 −0
Word Set Square

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

81%
+7 −0
Bytes to Segfault

10 answers  ·  posted over 1 year ago by moony‭  ·  last activity 7mo ago by radarek‭

71%
+3 −0
Generalized Sort

6 answers  ·  posted 12mo ago by Moshi‭  ·  last activity 7mo ago by radarek‭

80%
+6 −0
Golf golf challenge

5 answers  ·  posted 9mo ago by Lundin‭  ·  last activity 7mo ago by radarek‭

84%
+9 −0
1, 2, Fizz, 4, Buzz!

20 answers  ·  posted over 1 year ago by Dion‭  ·  last activity 9mo ago by celtschk‭

71%
+3 −0
Implement Rule 110

1 answer  ·  posted 9mo ago by celtschk‭  ·  last activity 9mo ago by Moshi‭

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