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2026-04-21 11:35:12 +08:00
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commit f10cebebdf
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4.21.py

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s = "Hello"
print("1. 字符 ASCII 码:")
for ch in s:
print(f" '{ch}' -> {ord(ch)}")
print("\n2. 验证 chr(65):")
print(f" chr(65) = '{chr(65)}'")
A = [3, 4]
B = [1, 2]
def add_vectors(v1, v2):
return [v1[0] + v2[0], v1[1] + v2[1]]
def scalar_multiply(scalar, v):
return [scalar * v[0], scalar * v[1]]
import math
def vector_length(v):
return math.sqrt(v[0]**2 + v[1]**2)
print("\n3. 向量计算:")
print(f" A = {A}")
print(f" B = {B}")
print(f" A + B = {add_vectors(A, B)}")
print(f" 2 × A = {scalar_multiply(2, A)}")
print(f" A 的模 = {vector_length(A)}")