📜  Java程序将八进制数转换为十进制,反之亦然

📅  最后修改于: 2020-09-26 18:59:13             🧑  作者: Mango

在此程序中,您将学习如何使用Java中的函数将八进制数转换为十进制数,反之亦然。

示例1:将小数转换为八进制的程序
public class DecimalOctal {

    public static void main(String[] args) {
        int decimal = 78;
        int octal = convertDecimalToOctal(decimal);
        System.out.printf("%d in decimal = %d in octal", decimal, octal);
    }

    public static int convertDecimalToOctal(int decimal)
    {
        int octalNumber = 0, i = 1;

        while (decimal != 0)
        {
            octalNumber += (decimal % 8) * i;
            decimal /= 8;
            i *= 10;
        }

        return octalNumber;
    }
}

输出

78 in decimal = 116 in octal

此转换发生为:

8 | 78
8 | 9 -- 6
8 | 1 -- 1
8 | 0 -- 1
(116)

示例2:将八进制转换为十进制的程序
public class OctalDecimal {

    public static void main(String[] args) {
        int octal = 116;
        int decimal = convertOctalToDecimal(octal);
        System.out.printf("%d in octal = %d in decimal", octal, decimal);
    }

    public static int convertOctalToDecimal(int octal)
    {
        int decimalNumber = 0, i = 0;

        while(octal != 0)
        {
            decimalNumber += (octal % 10) * Math.pow(8, i);
            ++i;
            octal/=10;
        }

        return decimalNumber;
    }
}

输出

116 in octal = 78 in decimal

此转换发生为:

1 * 82 + 1 * 81 + 6 * 80 = 78