From c893b1216fa55761b1252f422693b69b2ab53092 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Fri, 16 Jan 2026 10:54:35 +0800
Subject: [PATCH] =?UTF-8?q?day03-=E6=B5=81=E7=A8=8B=E6=8E=A7=E5=88=B6?=
 =?UTF-8?q?=E8=AF=AD=E5=8F=A5-=E5=BE=AA=E7=8E=AF=E6=B5=81=E7=A8=8B-for?=
 =?UTF-8?q?=E5=BE=AA=E7=8E=AF-=E7=BB=83=E4=B9=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 day03/src/com/inmind/for03/Demo07.java | 16 ++++++++++++++-
 day03/src/com/inmind/for03/Test08.java | 27 ++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 1 deletion(-)
 create mode 100644 day03/src/com/inmind/for03/Test08.java

diff --git a/day03/src/com/inmind/for03/Demo07.java b/day03/src/com/inmind/for03/Demo07.java
index 89e9bd0..4c70743 100644
--- a/day03/src/com/inmind/for03/Demo07.java
+++ b/day03/src/com/inmind/for03/Demo07.java
@@ -27,8 +27,22 @@ public class Demo07 {
         System.out.println("程序结束");
 
         //请使用for，循环打印1~10
+        for (int j = 1; j <= 10; j++) {
+            System.out.println(j);
+        }
         //请使用for，循环打印10~1
-        //请使用for，循环打印A~B
+        for (int k = 10; k > 0; k--) {
+            System.out.println(k);
+        }
+        System.out.println("--------------------");
+        //请使用for，循环打印A~Z  65:A    Z:90
+        for (int i = 65; i < 91; i++) {
+            System.out.println((char) i);
+        }
 
+        System.out.println("--------------------");
+        for (char c = 'A'; c <= 'Z'; c++) {
+            System.out.println(c);
+        }
     }
 }
diff --git a/day03/src/com/inmind/for03/Test08.java b/day03/src/com/inmind/for03/Test08.java
new file mode 100644
index 0000000..adf2d13
--- /dev/null
+++ b/day03/src/com/inmind/for03/Test08.java
@@ -0,0 +1,27 @@
+package com.inmind.for03;
+//循环流程-for循环_偶数累和
+public class Test08 {
+    //使用循环，计算1-100之间的偶数和
+    /*
+        实现步骤：
+        1.定义一个变量，用来记录总和
+        2.使用for实现1~100的值的变化
+        3.在for的循环体中，判断对应的值是否是偶数，如果是，则累加到总和变量中
+        4.循环结束，打印最终结果
+     */
+    public static void main(String[] args) {
+        //1.定义一个变量，用来记录总和
+        int sum = 0;
+        //2.使用for实现1~100的值的变化
+        for (int i = 1; i <= 100; i++) {
+            //3.在for的循环体中，判断对应的值是否是偶数，如果是，则累加到总和变量中
+            if (i % 2 == 0) {//判断是否是偶数
+//                sum = sum + i;
+                sum += i;
+            }
+        }
+
+        //4.循环结束，打印最终结果
+        System.out.println("1~100的偶数和为："+sum);
+    }
+}