Created
May 10, 2012 19:10
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Semi-obscure short URL algorithm
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| def rebase(num, numerals="Zv0w2x4y6z8AaBcCeDgEiFkGmHoIqJsKuL3M7NbOfPjQnRrS1T9UhVpW5XlYdt"): | |
| base = len(numerals) | |
| left_digits = num // base | |
| if left_digits == 0: | |
| return numerals[num % base] | |
| else: | |
| return rebase(left_digits, numerals) + numerals[num % base] | |
| >>> rebase(451) | |
| 'yD' | |
| >>> rebase(452) | |
| 'yg' | |
| >>> rebase(453) | |
| 'yE' | |
| >>> rebase(454) | |
| 'yi' |
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