43 lines
1.0 KiB
Python
43 lines
1.0 KiB
Python
# 题目1 在Python中，用两种方式表示"Hello"：
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# 1.用 ord() 函数打印每个字符的ASCII码
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text = "Hello"
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for char in text:
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print(f"'{char}'的ASCII码是:{ord(char)}")
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# 2.用 chr() 函数验证：字符65对应的是大写字母A
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char_65 = chr(65)
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print(f"ASCII码65对应的字符是:{cahr_65}")
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print(f"验证结果:{char_65 == 'A'}")
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# 题目3
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# 1.计算 A + B 的结果:
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A = [3,4]
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B = [1,2]
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A_plus_B = [a + b for a,b in zip(A,B)]
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print(f"A + B = {A_plus_B}")
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# 2.计算 2 × A 的结果:
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scalar = 2
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two_A = [scalar * a for a in A]
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print(f"2 * A = {two_A}")
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# 3.计算 A 的长度（模）:
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import math
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A_magnitutude = math.sqrt(sum(a**2 for a in A))
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print(f"A的长度(模)是:{A_magnitutude}")
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# 题目4
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# 1.计算它们的点积 A · B:
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A = [1,2,3]
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B = [4,5,6]
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dot_product = sum(a * b for a,b in zip(A,B))
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print(f"A * B ={dot_product}")
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# 2.计算它们的余弦相似度:
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import math
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A = [1,2,3]
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B = [4,5,6]
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dot_product = sum(a * b for a,b in ) |