mirror of
https://github.com/krahets/hello-algo.git
synced 2026-06-15 22:57:48 +08:00
59 lines
1.1 KiB
Python
59 lines
1.1 KiB
Python
"""
|
|
File: simple_hash.py
|
|
Created Time: 2023-06-15
|
|
Author: krahets (krahets@163.com)
|
|
"""
|
|
|
|
|
|
def add_hash(key: str) -> int:
|
|
"""加算ハッシュ"""
|
|
hash = 0
|
|
modulus = 1000000007
|
|
for c in key:
|
|
hash += ord(c)
|
|
return hash % modulus
|
|
|
|
|
|
def mul_hash(key: str) -> int:
|
|
"""乗算ハッシュ"""
|
|
hash = 0
|
|
modulus = 1000000007
|
|
for c in key:
|
|
hash = 31 * hash + ord(c)
|
|
return hash % modulus
|
|
|
|
|
|
def xor_hash(key: str) -> int:
|
|
"""XOR ハッシュ"""
|
|
hash = 0
|
|
modulus = 1000000007
|
|
for c in key:
|
|
hash ^= ord(c)
|
|
return hash % modulus
|
|
|
|
|
|
def rot_hash(key: str) -> int:
|
|
"""回転ハッシュ"""
|
|
hash = 0
|
|
modulus = 1000000007
|
|
for c in key:
|
|
hash = (hash << 4) ^ (hash >> 28) ^ ord(c)
|
|
return hash % modulus
|
|
|
|
|
|
"""Driver Code"""
|
|
if __name__ == "__main__":
|
|
key = "Hello アルゴリズム"
|
|
|
|
hash = add_hash(key)
|
|
print(f"加算ハッシュ値は {hash}")
|
|
|
|
hash = mul_hash(key)
|
|
print(f"乗算ハッシュ値は {hash}")
|
|
|
|
hash = xor_hash(key)
|
|
print(f"XOR ハッシュ値は {hash}")
|
|
|
|
hash = rot_hash(key)
|
|
print(f"回転ハッシュ値は {hash}")
|