From 5fa066766f0c0cb05c219664d5784e09308e8586 Mon Sep 17 00:00:00 2001
From: 2509165020 <2509165020@student.edu.cn>
Date: Tue, 21 Apr 2026 11:24:43 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E6=88=90=E4=BD=9C=E4=B8=9A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 260421+2509165020/test1.py |  7 +++++++
 260421+2509165020/test2.py | 28 ++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)
 create mode 100644 260421+2509165020/test1.py
 create mode 100644 260421+2509165020/test2.py

diff --git a/260421+2509165020/test1.py b/260421+2509165020/test1.py
new file mode 100644
index 0000000..5486a24
--- /dev/null
+++ b/260421+2509165020/test1.py
@@ -0,0 +1,7 @@
+print("=== 1. 打印Hello每个字符的ASCII码 ===")
+for char in "Hello":
+    print(f"字符 '{char}' 的ASCII码: {ord(char)}")
+
+print("\n=== 2. 验证 chr(65) ===")
+result = chr(65)
+print(f"chr(65) 的结果是: {result}")
\ No newline at end of file
diff --git a/260421+2509165020/test2.py b/260421+2509165020/test2.py
new file mode 100644
index 0000000..e338c17
--- /dev/null
+++ b/260421+2509165020/test2.py
@@ -0,0 +1,28 @@
+import math
+print("===== 题目3 向量运算 =====")
+A = [3, 4]
+B = [1, 2]
+A_plus_B = [a + b for a, b in zip(A, B)]
+print(f"A + B = {A_plus_B}")
+two_A = [2 * a for a in A]
+print(f"2 * A = {two_A}")
+norm_A = math.sqrt(sum(x**2 for x in A))
+print(f"A的模长 = {norm_A}")
+print("\n===== 题目4 点积 & 余弦相似度 =====")
+A1 = [1, 2, 3]
+B1 = [4, 5, 6]
+dot1 = sum(a*b for a, b in zip(A1, B1))
+norm_A1 = math.sqrt(sum(x**2 for x in A1))
+norm_B1 = math.sqrt(sum(x**2 for x in B1))
+cos1 = dot1 / (norm_A1 * norm_B1)
+print(f"A1·B1 点积 = {dot1}")
+print(f"A1、B1 余弦相似度 = {cos1:.4f}")
+A2 = [1, 0]
+B2 = [0, 1]
+dot2 = sum(a*b for a, b in zip(A2, B2))
+norm_A2 = math.sqrt(sum(x**2 for x in A2))
+norm_B2 = math.sqrt(sum(x**2 for x in B2))
+cos2 = dot2 / (norm_A2 * norm_B2)
+print(f"\nA2·B2 点积 = {dot2}")
+print(f"A2、B2 余弦相似度 = {cos2}")
+print("原因：两向量正交（夹角90°），余弦值为0")
\ No newline at end of file