Python 2.7.2
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0
print 2**38
http://www.pythonchallenge.com/pc/def/map.html
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1
import string tran=string.maketrans(string.lowercase[:26],string.lowercase[2:26]+'ab') 'map'.translate(tran)
http://www.pythonchallenge.com/pc/def/ocr.html
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2
import collections dic = collections.OrderedDict() for c in s: dic[c] = dic.get(c,0) + 1 avg = len(s)//len(dic) print(''.join([c for c in dic if dic[c] < avg]))