From ffdb027ab73ada4fd8b976db470fa9ae9e5ff194 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=8D=9C=E4=BD=B3=E6=9C=A8?= <bjm21@mails.tsinghua.edu.cn>
Date: Thu, 7 Jul 2022 22:43:27 +0800
Subject: [PATCH] =?UTF-8?q?CSharp=5F=E5=8D=9C=E4=BD=B3=E6=9C=A8=5F?=
 =?UTF-8?q?=E6=99=BA10?=
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---
 hw1/hw1/Counting.cs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/hw1/hw1/Counting.cs b/hw1/hw1/Counting.cs
index b8e76f4..2944500 100644
--- a/hw1/hw1/Counting.cs
+++ b/hw1/hw1/Counting.cs
@@ -44,6 +44,31 @@ public interface ICountableVariable
 
     public class Counting : ICountableVariable
     {
+        private int variable = -1;
+        private int readTimes;
+        private int writeTimes;
+        public int Variable
+        {
+            set
+            {
+                value = value >= 0 ? value : 0;
+                writeTimes += (value != variable) ? 1 : 0;
+                variable = value;
+            }
+            get
+            {
+                readTimes++;
+                return variable;
+            }
+        }
+        public int ReadTimes
+        {
+            get => readTimes;
+        }
+        public int WriteTimes
+        {
+            get => writeTimes;
+        }
         // 需要实现：分别统计变量Variable被读取、被修改的次数，只允许修改Counting类中的代码
         // 要求：
         // 1. Variable 不能被外部程序赋值为负数。若被赋为负数，则将它代表的值置为0。