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import java.util.Scanner;
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public class test {
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// 将字符串转换为十进制
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public static int toDecimal(String value, int base) {
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return Integer.parseInt(value, base);
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}
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// 将十进制转换为指定进制
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public static String fromDecimal(int value, int base) {
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return Integer.toString(value, base).toUpperCase();
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}
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public static void main(String[] args) {
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Scanner scanner = new Scanner(System.in);
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System.out.println("请选择转换类型：");
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System.out.println("1. 二进制");
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System.out.println("2. 八进制");
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System.out.println("3. 十进制");
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System.out.println("4. 十六进制");
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System.out.print("请输入源进制（1-4）: ");
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int sourceBase = scanner.nextInt();
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System.out.print("请输入目标进制（1-4）: ");
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int targetBase = scanner.nextInt();
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System.out.print("请输入要转换的数字: ");
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String value = scanner.next();
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int decimalValue;
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// 将输入的值转换为十进制
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switch (sourceBase) {
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case 1:
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decimalValue = toDecimal(value, 2);
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break;
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case 2:
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decimalValue = toDecimal(value, 8);
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break;
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case 3:
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decimalValue = toDecimal(value, 10);
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break;
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case 4:
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decimalValue = toDecimal(value, 16);
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break;
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default:
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throw new IllegalArgumentException("无效的源进制");
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}
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// 将十进制值转换为目标进制
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String result;
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switch (targetBase) {
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case 1:
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result = fromDecimal(decimalValue, 2);
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break;
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case 2:
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result = fromDecimal(decimalValue, 8);
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break;
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case 3:
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result = fromDecimal(decimalValue, 10);
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break;
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case 4:
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result = fromDecimal(decimalValue, 16);
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break;
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default:
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throw new IllegalArgumentException("无效的目标进制");
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}
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System.out.println("转换结果: " + result);
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scanner.close();
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}
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} |
