Rosetta Code/Rank languages by popularity: Difference between revisions
m (→{{header|Python}}: not sure if need to close) |
m (Put in RC cat) |
||
Line 1: | Line 1: | ||
{{task|Text processing}}[[Category:Networking and Web Interaction]][[Category:Sorting]] |
{{task|Text processing}}[[Category:Networking and Web Interaction]][[Category:Sorting]][[Category:Rosetta Code related]] |
||
Sort most popular programming languages based in number of members in Rosetta Code |
Sort most popular programming languages based in number of members in Rosetta Code categories (from http://www.rosettacode.org/w/index.php?title=Special:Categories&limit=500) |
||
Output: |
Output: |
Revision as of 14:08, 30 January 2009
You are encouraged to solve this task according to the task description, using any language you may know.
Sort most popular programming languages based in number of members in Rosetta Code categories (from http://www.rosettacode.org/w/index.php?title=Special:Categories&limit=500)
Output:
1. 246 - Programming_Tasks 2. 203 - Python 3. 201 - Ada 4. 188 - OCaml 5. 171 - Perl 6. 169 - Java 7. 168 - Haskell 8. 157 - C 9. 141 - Forth 10. 140 - Ruby ...
Filtering wrong results is optional. You can check against http://www.rosettacode.org/wiki/Special:MostLinkedCategories
Python
Works with: Python 2.6
<python>import urllib import re
def key1(x):
return int(x.split()[0])
a = urllib.urlopen("http://www.rosettacode.org/w/index.php?title=Special:Categories&limit=500")
entries = []
for line in a:
match = re.search('>([^<>]*)</a> \((\d+) members?\)', line) if match: entries.append(match.group(2) + ' - ' + match.group(1))
a.close()
for c, line in enumerate(sorted(entries, key=key1, reverse=True),start=1):
print "%3d. %s" % (c, line)</python>
Ruby
require 'open-uri'
entries = []
open("http://www.rosettacode.org/w/index.php?title=Special:Categories&limit=500") do |f|
for line in f match = line.match(%r{>([^<>]*)</a> \((\d+) members?\)}) entries << match[2] + ' - ' + match[1] if match end
end
entries.sort_by {|x| -x.to_i}.each_with_index do |line, c|
puts "%3d. %s" % [c+1, line]
end