zhuanhuan

jinzhizhuanhuan.java

@@ -0,0 +1,69 @@
+import java.util.Scanner;
+public class jinzhizhuanhuan {
+
+
+
+
+
+    // 将任意进制数转换为十进制数
+    public static int toDecimal(String number, int base) {
+        int decimal = 0;
+        int power = 0;
+        int len = number.length();
+
+        for (int i = len - 1; i >= 0; i--) {
+            char digit = number.charAt(i);
+            int value = Character.digit(digit, base);
+            if (value == -1) {
+                throw new IllegalArgumentException("Invalid digit for base " + base + ": " + digit);
+            }
+            decimal += value * Math.pow(base, power);
+            power++;
+        }
+
+        return decimal;
+    }
+
+    // 将十进制数转换为任意进制数
+    public static String fromDecimal(int number, int base) {
+        if (number == 0) {
+            return "0";
+        }
+
+        StringBuilder result = new StringBuilder();
+        char[] digits = "0123456789ABCDEF".toCharArray();
+
+        while (number > 0) {
+            int remainder = number % base;
+            result.insert(0, digits[remainder]);
+            number /= base;
+        }
+
+        return result.toString();
+    }
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+
+        // 输入原始进制和数
+        System.out.print("请输入原始进制（2-16）: ");
+        int sourceBase = scanner.nextInt();
+        System.out.print("请输入原始数: ");
+        String sourceNumber = scanner.next();
+
+        // 输入目标进制
+        System.out.print("请输入目标进制（2-16）: ");
+        int targetBase = scanner.nextInt();
+
+        // 转换并输出结果
+        try {
+            int decimal = toDecimal(sourceNumber, sourceBase);
+            String targetNumber = fromDecimal(decimal, targetBase);
+            System.out.println("转换后的数是: " + targetNumber);
+        } catch (IllegalArgumentException e) {
+            System.out.println(e.getMessage());
+        }
+
+        scanner.close();
+    }
+}