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59 lines
1.3 KiB
Python
59 lines
1.3 KiB
Python
"""
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File: simple_hash.py
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Created Time: 2023-06-15
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Author: krahets (krahets@163.com)
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"""
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def add_hash(key: str) -> int:
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"""Аддитивное хеширование"""
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hash = 0
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modulus = 1000000007
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for c in key:
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hash += ord(c)
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return hash % modulus
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def mul_hash(key: str) -> int:
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"""Мультипликативное хеширование"""
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hash = 0
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modulus = 1000000007
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for c in key:
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hash = 31 * hash + ord(c)
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return hash % modulus
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def xor_hash(key: str) -> int:
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"""XOR-хеширование"""
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hash = 0
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modulus = 1000000007
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for c in key:
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hash ^= ord(c)
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return hash % modulus
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def rot_hash(key: str) -> int:
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"""Хеширование с циклическим сдвигом"""
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hash = 0
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modulus = 1000000007
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for c in key:
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hash = (hash << 4) ^ (hash >> 28) ^ ord(c)
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return hash % modulus
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"""Driver Code"""
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if __name__ == "__main__":
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key = "Hello Algo"
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hash = add_hash(key)
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print(f"Хеш-сумма сложением = {hash}")
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hash = mul_hash(key)
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print(f"Хеш-сумма умножением = {hash}")
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hash = xor_hash(key)
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print(f"Хеш-сумма XOR = {hash}")
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hash = rot_hash(key)
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print(f"Хеш-сумма с циклическим сдвигом = {hash}")
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