warning: in the working copy of 'array_src/practices_ary/ForOrderProcessingSystem.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'array_src/practices_ary/ForSalesDataAnalysis.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'array_src/practices_ary/ForStudentGradeProcessor.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'array_src/practices_ary/ForUserAgeAnalysis.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'oop/project/banks/README', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'while_and_if/practices_while/ControlGameScoreSystem.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'while_and_if/practices_while/ControlInventoryCheck.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'while_and_if/practices_while/ControlPaginationSystem.java', LF will be replaced by CRLF the next time Git touches it
warning: in the working copy of 'while_and_if/practices_while/ControlUserRegistrationSystem.java', LF will be replaced by CRLF the next time Git touches it
diff --git a/array_src/practices_ary/ForOrderProcessingSystem.java b/array_src/practices_ary/ForOrderProcessingSystem.java
index 27c0f02..d250397 100644
--- a/array_src/practices_ary/ForOrderProcessingSystem.java
+++ b/array_src/practices_ary/ForOrderProcessingSystem.java
@@ -17,9 +17,19 @@ public class ForOrderProcessingSystem {
         double totalAmount = calculateTotal(orders);
         System.out.println("订单的总金额: $" + totalAmount);
 
-        // 查找订单金额大于某个阈值的订单，并返回这些订单的索引
+        // 查找订单金额最接近    /某个阈值的订单，并返回这些订单的索引
         int idx = findOrdersAboveThreshold(orders, threshold);
         System.out.println("最接近阈值 $" + threshold + "的索引 " + idx);
+    }
+    public static void calculateTotal(double[] orders){
+        double total = 0.0;
+        for (double order : orders){
+            total += order;
+        }
+        return total;
+    }
+    public static int findOrdersAboveThreshold(double[] orders,double[] threshold){
+
     }
     // 补充calculateTotal、findOrdersAboveThreshold方法定义以及实现
 }
diff --git a/array_src/practices_ary/ForSalesDataAnalysis.java b/array_src/practices_ary/ForSalesDataAnalysis.java
index 2dbb0bf..1a49f02 100644
--- a/array_src/practices_ary/ForSalesDataAnalysis.java
+++ b/array_src/practices_ary/ForSalesDataAnalysis.java
@@ -1,15 +1,15 @@
 package practices_ary;
 
-/**
- * 2. 销售数据分析
- *
- * 需求： 实现一个销售数据分析系统。给定一个数组，其中每个元素表示一个月的销售额。计算以下内容：
- *
- * 	•	总销售额
- * 	•	平均销售额
- * 	•	销售额最高的月份
- * 	•	销售额最低的月份
- * */
+///**
+// * 2. 销售数据分析
+// *
+// * 需求： 实现一个销售数据分析系统。给定一个数组，其中每个元素表示一个月的销售额。计算以下内容：
+// *
+// * 	•	总销售额
+// * 	•	平均销售额
+// * 	•	销售额最高的月份
+// * 	•	销售额最低的月份
+// * */
 public class ForSalesDataAnalysis {
     public static void main(String[] args) {
         double[] sales = {1200.50, 1500.75, 1300.00, 1100.25, 1700.80, 1600.90, 1400.60, 1550.50, 1650.00, 1800.70, 1900.80, 2000.00};
@@ -27,5 +27,39 @@ public class ForSalesDataAnalysis {
         System.out.println("Highest Sales Month: " + months[maxIndex] + " ($" + sales[maxIndex] + ")");
         System.out.println("Lowest Sales Month: " + months[minIndex] + " ($" + sales[minIndex] + ")");
     }
+
+    public static double calculateTotal(double[] sales){
+        double total = 0.0;
+        for (double sale : sales){
+            total += sale;
+        }
+        return total;
+    }
+
+    public static double calculateAverage(double[] sales){
+        double total = calculateTotal(sales);
+         total = total / sales.length;
+         return total;
+    }
+
+    public static int findMaxIndex(double[] sales){
+        int maxIndex = 0;
+        for (int i = 1; i < sales.length;i++){
+            if (sales[i] > sales[maxIndex]){
+                sales[maxIndex] = sales[i];
+            }
+        }
+        return maxIndex;
+    }
+
+    public static int findMinIndex(double[] sales){
+        int minIndex = 0;
+        for (int i = 1; i < sales.length;i++){
+            if (sales[i] < sales[minIndex]){
+                sales[minIndex] = sales[i];
+            }
+        }
+        return minIndex;
+    }
     // 补充以上calculateTotal、calculateAverage、findMaxIndex、findMinIndex方法定义以及实现
 }
diff --git a/array_src/practices_ary/ForStudentGradeProcessor.java b/array_src/practices_ary/ForStudentGradeProcessor.java
index c5780de..8dd642b 100644
--- a/array_src/practices_ary/ForStudentGradeProcessor.java
+++ b/array_src/practices_ary/ForStudentGradeProcessor.java
@@ -26,5 +26,39 @@ public class ForStudentGradeProcessor {
         System.out.println("Highest Grade: " + grades[maxIndex] + " (Student Index: " + maxIndex + ")");
         System.out.println("Lowest Grade: " + grades[minIndex] + " (Student Index: " + minIndex + ")");
     }
+
+    public static int calculateTotal(int[] grades){
+        int total = 0;
+        for (int grade : grades){
+            total += grade;
+        }
+        return total;
+    }
+
+    public static int calculateAverage(int[] grades){
+        int total = calculateAverage(grades);
+           total = total / grades.length;
+           return total;
+    }
+
+    public static int findMaxIndex(int[] grades){
+        int maxIndex = 0;
+        for (int i = 1; i < grades.length;i++){
+            if (grades[i] > grades[maxIndex]){
+                grades[maxIndex] = grades[i];
+            }
+        }
+        return maxIndex;
+    }
+
+    public static int findMinIndex(int[] grades){
+        int minIndex = 0;
+        for (int i = 1; i < grades.length;i++){
+            if (grades[i] < grades[minIndex]){
+                grades[minIndex] = grades[i];
+            }
+        }
+        return minIndex;
+    }
     // 补充calculateTotal、calculateAverage、findMaxIndex、findMinIndex的方法定义以及实现
 }
diff --git a/array_src/practices_ary/ForUserAgeAnalysis.java b/array_src/practices_ary/ForUserAgeAnalysis.java
index 1bf7613..94da1d0 100644
--- a/array_src/practices_ary/ForUserAgeAnalysis.java
+++ b/array_src/practices_ary/ForUserAgeAnalysis.java
@@ -26,5 +26,44 @@ public class ForUserAgeAnalysis {
         int countInRange = countInRange(ages, 20, 30);
         System.out.println("年龄在20 ～ 30之间的总共: " + countInRange);
     }
+
+    public static double calculateAverage(int[] ages){
+        int sum = 0;
+        for (int age : ages){
+            sum += age;
+        }
+         sum = sum / ages.length;
+        return sum;
+    }
+
+    public static int findMax(int[] ages){
+        int max = ages[0];
+        for (int age : ages){
+            if (age > max){
+                max = age;
+            }
+        }
+        return max;
+    }
+
+    public static int findMin(int[] ages){
+        int min = ages[0];
+        for (int age : ages){
+            if (age < min){
+                min = age;
+            }
+        }
+        return min;
+    }
+
+    public static int countInRange(int[] ages , int a,int b){
+        int total = 0;
+        for (int age : ages){
+            if (age >= a && age <= b){
+                total++;
+            }
+        }
+        return total;
+    }
     // 补充 calculateAverage、findMax、findMin、countInRange方法定义以及实现
 }
diff --git a/oop/project/banks/README b/oop/project/banks/README
index 2dd3ca8..a05fed0 100644
--- a/oop/project/banks/README
+++ b/oop/project/banks/README
@@ -1,6 +1,7 @@
 2. 设计一个在线银行系统
 
-需求： 设计一个在线银行系统，包括账户和交易。账户类应包含账户的基本信息（如账户号码、账户余额）。交易类应记录每笔交易的详细信息（如交易金额、交易类型和交易日期）。系统应能够处理存款、取款和转账操作。
+需求： 设计一个在线银行系统，包括账户和交易。账户类应包含账户的基本信息（如账户号码、账户余额）。
+交易类应记录每笔交易的详细信息（如交易金额、交易类型和交易日期）。系统应能够处理存款、取款和转账操作。
 
 提示：
 
diff --git a/while_and_if/practices_while/ControlGameScoreSystem.java b/while_and_if/practices_while/ControlGameScoreSystem.java
index 1603d2b..3fe38bd 100644
--- a/while_and_if/practices_while/ControlGameScoreSystem.java
+++ b/while_and_if/practices_while/ControlGameScoreSystem.java
@@ -1,5 +1,7 @@
 package practices_while;
 
+import java.util.Scanner;
+
 /**
  *
  * 游戏得分系统
@@ -13,4 +15,33 @@ package practices_while;
  * 	•	使用 break 来结束循环并计算总分和平均分。
  * */
 public class ControlGameScoreSystem {
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        int totalScore = 0;
+        int scoreCount = 0;
+
+        while(true){
+            System.out.println("请输入得分");
+            int score = scanner.nextInt();
+
+            if (score < 0){
+                break;
+            }
+            if (score == 0){
+                System.out.println("无效输入");
+
+                continue;
+            }
+
+            totalScore += score;
+            scoreCount++;
+        }
+
+        if (scoreCount > 0){
+            double a = totalScore / scoreCount;
+            System.out.println("总分:" + totalScore);
+            System.out.println("平均分：" + a);
+        }
+        scanner.close();
+    }
 }
diff --git a/while_and_if/practices_while/ControlInventoryCheck.java b/while_and_if/practices_while/ControlInventoryCheck.java
index 03e4d21..317415a 100644
--- a/while_and_if/practices_while/ControlInventoryCheck.java
+++ b/while_and_if/practices_while/ControlInventoryCheck.java
@@ -1,5 +1,6 @@
 package practices_while;
 
+import javax.swing.plaf.synth.SynthOptionPaneUI;
 import java.util.Scanner;
 
 /**
@@ -23,7 +24,20 @@ public class ControlInventoryCheck {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
         while (true){
+            System.out.println("用户输入购买的数量");
+            int control = scanner.nextInt();
+            if (INVENTORY < 0){
+                continue;
+            }
+            if (INVENTORY > 50){
+                System.out.println("库存不足，当前库存为：" + INVENTORY);
+                continue;
+            }
+
+            System.out.println("库存足够，可以购买，购买数量为:" + control);
+            break;
             // 补充逻辑
         }
+        scanner.close();
     }
 }
diff --git a/while_and_if/practices_while/ControlPaginationSystem.java b/while_and_if/practices_while/ControlPaginationSystem.java
index 8489a77..26784af 100644
--- a/while_and_if/practices_while/ControlPaginationSystem.java
+++ b/while_and_if/practices_while/ControlPaginationSystem.java
@@ -18,8 +18,22 @@ public class ControlPaginationSystem {
 
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
+        int number = 0;
+        int pageNumber = 0;
+        int totalNumber = 50;
         while(true){
             System.out.print("Enter records per page (1-50): ");
+             number = scanner.nextInt();
+             if (number < 1 || number > 50){
+                 System.out.println("无效输入");
+                 continue;
+             }
+             int maxPageNumber = (totalNumber + number - 1) / number;
+             pageNumber = scanner.nextInt();
+             if (pageNumber < 1 || pageNumber > maxPageNumber){
+                 System.out.println("无效输入，请重新输入");
+                 continue;
+             }
             // 补充逻辑
         }
     }
diff --git a/while_and_if/practices_while/ControlUserRegistrationSystem.java b/while_and_if/practices_while/ControlUserRegistrationSystem.java
index f3789a7..19b73ec 100644
--- a/while_and_if/practices_while/ControlUserRegistrationSystem.java
+++ b/while_and_if/practices_while/ControlUserRegistrationSystem.java
@@ -18,6 +18,12 @@ import java.util.Scanner;
 public class ControlUserRegistrationSystem {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
+        String username ;
+        String password ;
+        while (true){
+            System.out.println("请输入用户名（3-15个字符，只能包含字母）:");
+            username = scanner.nextInt();
+        }
         // 补充代码
     }
 }