From df970263d18666603868c7c59bca2f9761f0a6f7 Mon Sep 17 00:00:00 2001
From: EternalIllusion <eterill@hotmail.com>
Date: Mon, 23 Mar 2026 23:02:45 +0800
Subject: [PATCH] Fix: week4 ex4

---
 README.md    | 25 ++++++++++++++++++++++++-
 week4/ex4.py | 25 +++++++++++++++++++++++--
 2 files changed, 47 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 58b0cdc..2a8fa54 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,26 @@
 # ICSP Works
 
-ICSP课程相关的工程文件夹，托管于私人git服务器。
\ No newline at end of file
+ICSP课程相关的工程文件夹，托管于私人git服务器。**请勿发送到其他校外线上平台。请勿攻击此网站。**
+
+仓库地址: https://git.et3.my/eterill/ICSP1-Works    
+个人博客：https://eterill.xyz/
+
+## 命名说明
+
+`/week(\d+)`:对应某一周课程的内容   
+`/week(\d+)/run_all.py`:依次运行当周全部的程序  
+`/week(\d+)/ex(\d+)`:当周对应练习的代码 
+
+## 其他说明
+
+### 这个`.gitignore`是什么文件？
+这是一个用来避免python运行的缓存上传到服务器的一个控制文件，您可以询问ai了解详情。
+
+### 为什么这些代码这么离谱？
+这是我初中开始自学的，Python是我了解到的第一门非图形化编程语言（    
+总之用了一些高阶技巧和语法糖，不必在意，可以发给ai问问相关的技法（
+
+## 代码好像有问题？
+欢迎来告诉我！这些代码基本都是仓促编写的，没有经过严格测试，也经不起生产环境级的测试，如果你发现了问题可以发送邮件到[eterill@hotmail.com](mailto:eterill@hotmail.com)或者[e@eterill.xyz](mailto:e@eterill.xyz)
+
+如果你想问点其他的，欢迎来班级群找我！
\ No newline at end of file
diff --git a/week4/ex4.py b/week4/ex4.py
index 98d5562..2ca877b 100644
--- a/week4/ex4.py
+++ b/week4/ex4.py
@@ -2,15 +2,26 @@ def main():
     from random import randint
     print('==Exercise 4==')
     LIST_A = [1,2.0,'c',{"id":4}]
-    LIST_B = [randint(1,100) for i in range(10)]
+    LIST_B = [randint(1,20) for i in range(10)]
     LIST_C = [*[chr(i+65) for i in range(10)],27,28.0]
     
     print('Lists Initial Values:')
+
+    """
+    updated on Mar 23th 23:00
+    课上写的有点问题，重写了
     print(f'{i["idtf"]}: {i["value"]}' for i in [
         {"idtf":"List A","value":LIST_A},
         {"idtf":"List B","value":LIST_B},
         {"idtf":"List C","value":LIST_C},
         ])
+    """
+
+    print(*[f'{i["idtf"]}: {i["value"]}' for i in [
+        {"idtf":"List A","value":LIST_A},
+        {"idtf":"List B","value":LIST_B},
+        {"idtf":"List C","value":LIST_C},
+        ]],sep='\n')
     
     print('a range of items: ',LIST_C[:-3])
     print('reverse print of list: ',LIST_C[::-1])
@@ -23,8 +34,18 @@ def main():
     
     LIST_B.sort()
     print('sorting List B:',LIST_B)
-    
+
+    """
+    updated on Mar 23th 22:54
+    课上写的有点问题，重写了
     print('number of similar items in the list B: ',sum([1 if LIST_B[i] in LIST_B[i+1:] else 0 for i in range(len(LIST_B))]))
+    """
+    TEMP_DICT_SIMCOUNTER = {}
+    for i in LIST_B: 
+        if i in TEMP_DICT_SIMCOUNTER: TEMP_DICT_SIMCOUNTER[i]+=1 
+        else: TEMP_DICT_SIMCOUNTER[i]=1
+
+    print('number of similar items in the list B: ',*[f'{i}:{TEMP_DICT_SIMCOUNTER[i]} times ' if TEMP_DICT_SIMCOUNTER[i]>1 else "" for i in TEMP_DICT_SIMCOUNTER.keys()],sep='')
     
     print('==End Of Ex4==')
     return 0