mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-23 21:11:08 +00:00
94b51f6a91
* Added Builtin Voltage * Update builtin_voltage.py * Update electronics/builtin_voltage.py Co-authored-by: Caeden Perelli-Harris <caedenperelliharris@gmail.com> * Update electronics/builtin_voltage.py Co-authored-by: Caeden Perelli-Harris <caedenperelliharris@gmail.com> * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Apply suggestions from code review Co-authored-by: Caeden Perelli-Harris <caedenperelliharris@gmail.com> * [pre-commit.ci] auto fixes from pre-commit.com hooks for more information, see https://pre-commit.ci * Create elf.py Co-authored-by: Caeden Perelli-Harris <caedenperelliharris@gmail.com> Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Christian Clauss <cclauss@me.com>
22 lines
440 B
Python
22 lines
440 B
Python
def elf_hash(data: str) -> int:
|
|
"""
|
|
Implementation of ElfHash Algorithm, a variant of PJW hash function.
|
|
|
|
>>> elf_hash('lorem ipsum')
|
|
253956621
|
|
"""
|
|
hash_ = x = 0
|
|
for letter in data:
|
|
hash_ = (hash_ << 4) + ord(letter)
|
|
x = hash_ & 0xF0000000
|
|
if x != 0:
|
|
hash_ ^= x >> 24
|
|
hash_ &= ~x
|
|
return hash_
|
|
|
|
|
|
if __name__ == "__main__":
|
|
import doctest
|
|
|
|
doctest.testmod()
|