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  1. # http://c...content-available-to-author-only...e.com/a/78544/34718
  2.  
  3. import math
  4. def f(s):C=s.count;return-sum(C(x)*math.log2(C(x)/len(s))for x in set(s))
  5.  
  6. print(f("This is a test."))  			# 45.094
  7. print(f("00001111")) 					# 8.000
  8. print(f("cwmfjordbankglyphsvextquiz")) 	# 122.211
  9. print(f("             ")) 				# 0.0
Success #stdin #stdout 0.02s 9984KB
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45.09358392980084
8.0
122.21143267166846
-0.0
https://ideone.com/E4NnyF
Compute the histogram entropy estimation of a string
language:
Python 3 (python  3.9.5)
created:
7 years ago
visibility:
secret

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