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63 lines
1019 B
63 lines
1019 B
=begin
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File: simple_hash.rb
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Created Time: 2024-04-14
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Author: Xuan Khoa Tu Nguyen (ngxktuzkai2000@gmail.com)
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=end
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### 加法雜湊 ###
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def add_hash(key)
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hash = 0
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modulus = 1_000_000_007
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key.each_char { |c| hash += c.ord }
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hash % modulus
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end
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### 乘法雜湊 ###
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def mul_hash(key)
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hash = 0
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modulus = 1_000_000_007
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key.each_char { |c| hash = 31 * hash + c.ord }
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hash % modulus
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end
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### 互斥或雜湊 ###
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def xor_hash(key)
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hash = 0
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modulus = 1_000_000_007
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key.each_char { |c| hash ^= c.ord }
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hash % modulus
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end
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### 旋轉雜湊 ###
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def rot_hash(key)
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hash = 0
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modulus = 1_000_000_007
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key.each_char { |c| hash = (hash << 4) ^ (hash >> 28) ^ c.ord }
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hash % modulus
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end
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### Driver Code ###
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if __FILE__ == $0
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key = "Hello 演算法"
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hash = add_hash(key)
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puts "加法雜湊值為 #{hash}"
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hash = mul_hash(key)
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puts "乘法雜湊值為 #{hash}"
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hash = xor_hash(key)
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puts "互斥或雜湊值為 #{hash}"
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hash = rot_hash(key)
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puts "旋轉雜湊值為 #{hash}"
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end
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