fork download
copy 
  1. import random, string
  2. from collections import Counter, defaultdict
  3. import operator
  4. from itertools import groupby, chain
  5. from timeit import timeit
  6.  
  7.  
  8. def rndstr(len):
  9.     return ''.join(random.choice(string.letters) for i in xrange(len))
  10.  
  11. def rnditem():
  12.     return (rndstr(20), random.randint(1, 1000))
  13.  
  14.  
  15. a=[("13.5",100)]
  16. b=[("14.5",100), ("15.5", 100)]
  17. c=[("15.5",100), ("16.5", 100)]
  18. input=[a,b,c]
  19.  
  20. dim = 80
  21. input = [[rnditem() for i in xrange(dim)] for j in xrange(dim)]
  22.  
  23.  
  24. def r(x,y):
  25.     x += y
  26.     return x
  27.  
  28. def kos(input):
  29.     return reduce(operator.add, (Counter(dict(x)) for x in input))
  30.  
  31. def initial(input):
  32.     output=defaultdict(int)
  33.     for d in input:
  34.         for item in d:
  35.            output[item[0]]+=item[1]
  36.     return dict(output)
  37.  
  38. def BigYellowCactus(input):
  39.     input = sorted(chain(*input), key=lambda x: x[0])
  40.     output = {}
  41.     for k, g in groupby(input, key=lambda x: x[0]):
  42.         output[k] = sum(x[1] for x in g)
  43.     return output
  44.  
  45.  
  46. results = [(k.func_name, timeit(lambda: k(input), number=3)) for k in (kos, initial, BigYellowCactus)]
  47. results.sort(key=operator.itemgetter(1))
  48. print '\n'.join(str.format('{:20}{}', *x) for x in results)
  49.  
Success #stdin #stdout 1.24s 11152KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
initial             0.0154979228973
BigYellowCactus     0.0496730804443
kos                 0.885368108749
https://ideone.com/HAmvi
language:
Python (cpython 2.7.16)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!