24 lines
483 B
Python
24 lines
483 B
Python
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def elf_hash(data: str) -> int:
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"""
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Implementation of ElfHash Algorithm, a variant of PJW hash function.
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Returns:
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[int] -- [32 bit binary int]
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>>> elf_hash('lorem ipsum')
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253956621
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"""
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hash = x = 0
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for letter in data:
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hash = (hash << 4) + ord(letter)
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x = hash & 0xF0000000
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if x != 0:
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hash ^= x >> 24
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hash &= ~x
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return hash
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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