.gitignore

@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Editor-based HTTP Client requests
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="17" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/10.10.iml" filepath="$PROJECT_DIR$/10.10.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

10.10.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

README.md

@@ -1,2 +0,0 @@
-# UML
-

src/Main.java

@@ -0,0 +1,66 @@
+import java.util.Scanner;
+
+class BaseConverter {
+
+    private static final String DIGITS = "0123456789ABCDEF";
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        // 输入源进制，目标进制和数值
+        System.out.print("输入源进制(2-16): ");
+        int sourceBase = scanner.nextInt();
+        System.out.print("输入目标进制(2-16): ");
+        int targetBase = scanner.nextInt();
+        System.out.print("输入源进制的数值: ");
+        String value = scanner.next().toUpperCase();
+
+        // 检查输入是否有效
+        if (sourceBase < 2 || sourceBase > 16 || targetBase < 2 || targetBase > 16) {
+            System.out.println("进制必须在2到16之间");
+            return;
+        }
+
+        // 将源进制数值转换为十进制
+        int decimalValue = toDecimal(value, sourceBase);
+        if (decimalValue == -1) {
+            System.out.println("输入的数值在源进制中无效");
+            return;
+        }
+
+        // 将十进制数转换为目标进制
+        String targetValue = fromDecimal(decimalValue, targetBase);
+
+        // 输出结果
+        System.out.println("目标进制的数值: " + targetValue);
+    }
+
+    // 将任意进制的数值转换为十进制
+    private static int toDecimal(String value, int base) {
+        int decimalValue = 0;
+        for (int i = 0; i < value.length(); i++) {
+            char digit = value.charAt(i);
+            int digitValue = DIGITS.indexOf(digit);
+            if (digitValue < 0 || digitValue >= base) {
+                return -1; // 表示无效输入
+            }
+            decimalValue = decimalValue * base + digitValue;
+        }
+        return decimalValue;
+    }
+
+    // 将十进制数值转换为任意进制
+    private static String fromDecimal(int decimalValue, int base) {
+        if (decimalValue == 0) {
+            return "0";
+        }
+        StringBuilder targetValue = new StringBuilder();
+        while (decimalValue > 0) {
+            int remainder = decimalValue % base;
+            targetValue.insert(0, DIGITS.charAt(remainder));
+            decimalValue /= base;
+        }
+        return targetValue.toString();
+    }
+}
+