Under construction

This is a test of golf server. You can enjoy short coding here in several languages (58 languages). The purpose of this server is not serious competition. Joke problems are welcomed and you can speak freely about problems and can release spoilers. For serious competition with ranking, enter Code Golf.

I feel we have too many problems these days. Please make some time delay before adding problem. I personally think ~5 active problems are enough to work hard for each problem.

Active problems

• 159. main 1day(s) and 23:20:36 left (08/23 14:36:27 JST)
• 158. swab 5day(s) and 9:48:36 left (08/27 01:04:27 JST)
• 155. Brainfuck 15day(s) and 15:48:11 left (09/06 07:04:02 JST)
• 156. Brainfuck FIXED 15day(s) and 16:00:10 left (09/06 07:16:01 JST)

Hot post mortems

• 154. sum of square numbers 13day(s) and 20:32:21 before

All problems

1. hello world
2. echo
3. 99 shinichiroes of hamaji
4. example_com
5. Smileys Triangle
6. tennis
7. permutater
8. delete blank lines
9. Dancing Kids
10. bowling scorer
11. e
12. Hamming Numbers
13. Hole in one
14. ultimate problem
15. Card Sharp
16. even lines
17. sort characters
18. Square root
19. Fibonacci Numbers
20. prime numbers
21. invert case
22. Expression
23. All Expressions
24. LCS
25. delete last line
26. swap lines
27. rotate lines
28. transpose lines
29. exit status
30. multi_key sort
31. show the way
32. Booklet Printing
33. Tak y
34. FizzBuzz
35. Little Endian Calculator
36. infix to postfix
37. Greatest Common Divisor
38. banner
39. HQ9Plus
40. Least Common Multiple
41. judge Janken
42. delete duplicate lines
43. reverse lines
44. palindromize
45. Phone Key Pad
46. L system
47. easy regexp
48. google
49. Tetris
50. Evil C Compiler
51. Bracket Matching
52. Nearest Smaller Value fixed version
53. right time
54. Circle Art
55. join lines
56. duplicate lines
57. inverse matrix
58. maze solving
59. 128 bits
60. Summation
61. Rule 30
62. Sierpinski Fractal
63. 123
64. edlin
65. Mirroring Character
66. The Golden Ratio
67. factoriazation
68. Quine
69. Life game
70. chemical equation
71. Caesar cipher
72. delete words
73. BWT
74. Reverse BWT
75. Numeral system
76. print file
77. Look and say
78. Twin primes
79. Two Dice of A sides
80. Ring world
81. 100
82. ieee754
83. Text Compression
84. Timeout
85. odd lines
86. Inverse problem
87. ISBN2
88. Elias delta to Fibonacci
89. Sphenic Numbers
90. Trace characters
91. NOT gate
92. Bronspeak
93. packed UTF 9
94. Nothing
95. Print numbers _Revised_
96. Factorial
97. LED counter
98. Divide the rectangle
99. Bessel function J_0
100. permission list
101. leap year
102. postfix to infix
103. Palindromic Quine
104. Underload interpreter
105. Minimal scheme interpreter
106. reverse entire input
107. sum input
108. uudecode
109. Transpose
110. rot13
111. Number lines
112. Peak Detection
113. simple language
114. Multiply
115. Multiply long version
116. Drop first line
117. RPN calculator FIXED NO REALLY
118. Encoder decoder
119. Calculator
120. Permutations
121. cut string
122. Duplicate characters
123. Word frequency count FIXED
124. segs
125. stratum
126. exec
127. red black tree
128. checkers pattern
129. stable partition
130. nop
131. alternating harmonic series
132. Minimum Spanning Tree
133. Set symmetric difference
134. binary alnum symbol
135. Topological Sorting
136. Print out a lot _56K BEWARE_
137. 1000 digits
138. Morse decode
139. trivial encoder
140. embed
141. Runge Kutta
142. Day of the Week
143. Go capture
144. Table of divisors
145. putter golf for Ruby kaigi
146. Compound interest
147. Japanese numeral for Ruby kaigi
148. slope lines
149. duplicate certain lines _A_
150. duplicate certain lines _C_
151. N Queens
152. baker problem
153. count down
154. sum of square numbers
155. Brainfuck
156. Brainfuck FIXED
157. ASCII from 0x01 to 0x7f
158. swab
159. main

News

• ruby 1.8.7.
• allow more time for R (you have 2 sec for 3 test cases problems, 2.5 secs for 2 test cases, and 4 secs for 1 test case) since its invocation seems to take more than one second.
• updated execution server (Ubuntu edgy => gutsy). Many languages are updated (the detail will be described). Maybe now you can use standard input from /dev/fd/0. As usual :(, there may be several bugs. Please report me if you find bugs.
• made the system allow >65336 bytes outputs (this is the limit of linux pipe) for this this challenge. thanks yshl for investigating.
• added R (2.3.1). As of this time, I think we cannot use stdin. I'll investigate way to do...
• updated version of D (2.010), Io (20080209).
• added JVM, Groovy. Unfortunately, Scala was too slow in my attempts (it didn't solve hello world with 12sec timeout). (2008-02-17 added) Sorry, all groovy problem was considered as using exec. I'm not sure, but I've fixed the problem for easy ones.
• updated goruby's version using revision 15046.
• released caddy, a helper tool for golfers. You can test your solution, squeeze (remove comments or unnecessary whitespaces) your code, and submit the solution with this tool. Please unpack the package and check README for details. (I fixed a bug of database. Please re-download the package again if your caddy doesn't work correctly)
• updated goruby using this version. The most significant change might be the faster method_missing, which is provided by eban and flagitious. Thanks for the great contribution!
• added "name grep" to language summary page. This patch is provided by flagitious. Also, fixed binary escape for \x1a-\x1f, suggested by Pla. Thanks two guys!
• updated golfscript using new version and ruby1.9.
• added language summary page. You can access the page from language ranking. These information will be updated every 10 minutes. Uploaded the newest source code of this server.
• added goruby, which is a kind of joke program but is *officially* bundled in ruby-1.9.0-0 package (you can create the binary by "make golf"). I think there are two features: 1. Kernel#h method, which outputs Hello, world! 2. short method names: you can call Kernel#print using "pr". This feature is implemented by method_missing.
• added Vim as a language. You should make the buffer match the expected output given by each problem. The buffer is initialized using the standard input of the problem. For example, "ddZZ" can be the 4B solution of "delete first line" challenge.
• added GolfScript, a stack oriented esoteric language developped by flagitious. I'm pretty sure this language can be the #1 language of this site. Though the first purpose of this language might be golfing, its computation model is interesting, too. Thanks flagitious for this nice work!
• added Z80 as a language. Please check out the description of the environment made by mokehehe. Thanks mokehehe for suggesting and providing the environment!
• according to flagitious's suggestion, I relaxed timeout policy: you have 1 sec for 3 test cases problems, 1.5 secs for 2 test cases, and 3 secs for 1 test case.
• deploy new exec filter into all problems. It makes program ~10 times faster. Please tell me if you find some bugs.
• thanks all guys for submissions for tesing problem! I fixed A+'s suffix problem according to the suggestion.
• the ICFP contest is coming soon (July 20th)! I introduce this contest in this site because I think you golfers will enjoy this contest (especially, the contest in the last year contains many golfing challenges!). Join and enjoy the contests (but don't defeat me :)
• add Whirl.
• update version of DMD to 1.015 and fix VHDL's exec denied problem.
• add Pefunge.
• my email address was changed.
• add deadline feature. Authors of problems can select the deadline. After the deadline, the problem state becomes to "post-mortem" and all submitted source codes are opened. If you want to create closed problem, you can select no deadline option.
• add Postscript.
• add xgawk, m4, and update GHC to 6.6 from 6.4.
• expire all entries which use file save. I know this bug as mentioned the below, but i have not fixed yet. Please kindly don't submit entries using file save/load.
• changed the timeout of Java to 1.5sec (because its stratup is slow).

Please whisper me (shinichiro.hamaji _at_ gmail.com) if you found some problems. If you meet the following situations, it is the bug.

• can access network
• can be root
• can allocate >50MB memory
• meet stupid things

I know the following things:

• can load saved files. Basically, the saved files will be removed after executing submitted code. However, you can avoid this check by using system call directly. (I'll remove this bug if I have much spare time...)

Source code. Version informations.

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