java - 如何将带有字节操作的代码从 Java 翻译为 Kotlin？

Question

我想在 Kotlin 中翻译这个方法，但我不知道要转换哪些变量才能正确执行操作并拥有正确的操作内存:

public static UUID bytestoUUID(byte[] buf, int offset) {
    long lsb = 0;
    for (int i = 15; i >= 8; i--) {
        lsb = (lsb << 8) | (buf[i + offset] & 0xff);
    }

    long msb = 0;
    for (int i = 7; i >= 0; i--) {
        msb = (msb << 8) | (buf[i + offset] & 0xff);
    }

    return new UUID(msb, lsb);
}

你有正确的方法吗？谢谢

Answer 1

应该是

import java.util.*
import kotlin.experimental.and

 fun bytestoUUID(buf: ByteArray, offset: Int): UUID {
    var lsb: Long = 0
    for (i in 15 downTo 8) {
        lsb = lsb shl 8 or ((buf[i + offset] and 0xff.toByte()).toLong())
    }
    var msb: Long = 0
    for (i in 7 downTo 0) {
        msb = msb shl 8 or ((buf[i + offset] and 0xff.toByte()).toLong())
    }
    return UUID(msb, lsb)
}