29 lines
916 B
Python
29 lines
916 B
Python
s="Hello"
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for char in s:
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print(f"{char}的ASCII码是{ord(char)}")
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A=[3,4]
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B=[1,2]
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add_result=[A[i]+B[i]for i in range(len(A))]
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print("题目3-1 A+B结果:",add_result)
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mult_result=[2* x for x in A]
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print("题目3-2 2*A结果：",mult_result)
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import math
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a_length=math.sqrt(sum(x**2 for x in A))
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print("题目3-3 A的长度：",a_length)
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A1=[1,2,3]
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B1=[4,5,6]
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dot_product=sum(A1[i]*B1[i]for i in range(len(A1)))
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print("\n题目4-1 点积结果：",dot_product)
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a_len=math.sqrt(sum(x**2 for x in A1))
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b_len=math.sqrt(sum(x**2 for x in B1))
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cos_sim=dot_product/(a_len*b_len)
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print("题目4-2 余弦相似度:",cos_sim)
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A2=[1,0]
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B2=[0,1]
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dot2=sum(A2[i]*B2[i]for i in range(len(A2)))
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a2_len=math.sqrt(sum(x**2 for x in A2))
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b2_len=math.sqrt(sum(x**2 for x in B2))
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cos_sim2=dot2/(a2_len*b2_len)
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print("题目4-3 余弦相似度：",cos_sim2,",原因：两个向量正交（夹角90度)") |