From 5581feae5fc2de9741cd1e62c497bcdaef47c1de Mon Sep 17 00:00:00 2001
From: 2509165021 <2509165021@student.edu.cn>
Date: Tue, 21 Apr 2026 11:25:48 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E6=88=90=E4=BD=9C=E4=B8=9A?=
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---
 test 2.py | 38 ++++++++++++++++++++++++++++++++++++++
 test.py   |  4 ++++
 2 files changed, 42 insertions(+)
 create mode 100644 test 2.py
 create mode 100644 test.py

diff --git a/test 2.py b/test 2.py
new file mode 100644
index 0000000..02fd8af
--- /dev/null
+++ b/test 2.py	
@@ -0,0 +1,38 @@
+import math
+
+# 题目3
+A = [3, 4]
+B = [1, 2]
+
+A_plus_B = [A[0]+B[0], A[1]+B[1]]
+
+two_A = [2*A[0], 2*A[1]]
+
+norm_A = math.sqrt(A[0]**2 + A[1]**2)
+print("题目3结果：")
+print(f"A+B = {A_plus_B}")
+print(f"2*A = {two_A}")
+print(f"A的模 = {norm_A}")
+
+# 题目4
+A = [1, 2, 3]
+B = [4, 5, 6]
+
+dot_product = sum(a*b for a,b in zip(A,B))
+
+norm_A = math.sqrt(sum(a**2 for a in A))
+norm_B = math.sqrt(sum(b**2 for b in B))
+cos_sim = dot_product / (norm_A * norm_B)
+print("\n题目4-1、2结果：")
+print(f"点积 = {dot_product}")
+print(f"余弦相似度 = {cos_sim:.4f}")
+
+# 题目4-3
+A2 = [1, 0]
+B2 = [0, 1]
+dot_product2 = sum(a*b for a,b in zip(A2,B2))
+norm_A2 = math.sqrt(sum(a**2 for a in A2))
+norm_B2 = math.sqrt(sum(b**2 for b in B2))
+cos_sim2 = dot_product2 / (norm_A2 * norm_B2)
+print("\n题目4-3结果：")
+print(f"余弦相似度 = {cos_sim2}")
\ No newline at end of file
diff --git a/test.py b/test.py
new file mode 100644
index 0000000..8fbb34e
--- /dev/null
+++ b/test.py
@@ -0,0 +1,4 @@
+s = "Hello"
+for char in s:
+    print(f"'{char}' 的ASCII码: {ord(char)}")
+    print(f"ASCII码65对应的字符: {chr(65)}")
\ No newline at end of file