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December 25, 2015 06:19
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Champernowne's constant
https://projecteuler.net/problem=40
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| def champ(n): | |
| s = "" | |
| for x in xrange(0,n+1): | |
| s = s + str(x) | |
| return int(s[n]) | |
| k = [1, 10, 100, 1000 ,10000, 100000, 1000000] | |
| ans = 1 | |
| #either | |
| for i in k | |
| ans = ans * champ(i) | |
| # or | |
| ans = reduce(lambda x,y: x*y, map(champ, k)) |
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