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  1. import itertools
  2. def l(a,i,r):
  3.     s=[b for b in r if a[i][b]]
  4.     k=len(s)
  5.     return 2.0*sum(map(lambda x:a[x[0]][x[1]],itertools.combinations(s,2)))/k/(k-1)
  6. def g(a):
  7.     n=len(a)
  8.     r=range(n)
  9.     return sum([l(a,i,r) for i in r])/n
  10.  
  11. print g([[0,1,1],
  12.          [1,0,0],
  13.          [1,0,0]])
Runtime error #stdin #stdout 0.09s 10840KB
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https://ideone.com/k9e4l
language:
Python (cpython 2.7.16)
created:
11 years ago
visibility:
public

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