原文: https://www.programiz.com/kotlin-programming/examples/binary-octal-convert
在此程序中,您将学习使用 Kotlin 中的函数将二进制数转换为八进制数,反之亦然。
示例 1:将二进制转换为八进制的程序
在此程序中,我们将首先将二进制数转换为十进制。 然后,十进制数字转换为八进制。
fun main(args: Array<String>) {
val binary: Long = 101001
val octal = convertBinarytoOctal(binary)
println("$binary in binary = $octal in octal")
}
fun convertBinarytoOctal(binaryNumber: Long): Int {
var binaryNumber = binaryNumber
var octalNumber = 0
var decimalNumber = 0
var i = 0
while (binaryNumber.toInt() != 0) {
decimalNumber += (binaryNumber % 10 * Math.pow(2.0, i.toDouble())).toInt()
++i
binaryNumber /= 10
}
i = 1
while (decimalNumber != 0) {
octalNumber += decimalNumber % 8 * i
decimalNumber /= 8
i *= 10
}
return octalNumber
}
运行该程序时,输出为:
101001 in binary = 51 in octal
此转换发生为:
Binary To Decimal
1 * 25 + 0 * 24 + 1 * 23 + 0 * 22 + 0 * 21 + 1 * 20 = 41
Decimal to Octal
8 | 41
8 |5 -- 1
8 |0 -- 5
(51)
示例 2:将八进制转换为二进制的程序
在此程序中,八进制数首先从十进制到十进制。 然后,将十进制数转换为二进制数。
fun main(args: Array<String>) {
val octal = 67
val binary = convertOctalToBinary(octal)
println("$octal in octal = $binary in binary")
}
fun convertOctalToBinary(octalNumber: Int): Long {
var octalNumber = octalNumber
var decimalNumber = 0
var i = 0
var binaryNumber: Long = 0
while (octalNumber != 0) {
decimalNumber += (octalNumber % 10 * Math.pow(8.0, i.toDouble())).toInt()
++i
octalNumber /= 10
}
i = 1
while (decimalNumber != 0) {
binaryNumber += (decimalNumber % 2 * i).toLong()
decimalNumber /= 2
i *= 10
}
return binaryNumber
}
运行该程序时,输出为:
67 in octal = 110111 in binary
This conversion takes place as:
Octal To Decimal
6 * 81 + 7 * 80 = 55
Decimal to Binary
2 | 55
2 | 27 -- 1
2 | 13 -- 1
2 | 6 -- 1
2 | 3 -- 0
2 | 1 -- 1
2 |0 -- 1
(110111)
以下是等效的 Java 代码: Java 程序:将二进制转换为八进制,反之亦然