import java.util.zip.CRC32
import java.nio.charset.StandardCharsets
// Calculates the CRC32 checksum of a string.
// Returns an 8‑character uppercase hexadecimal string.
fun crc32OfString(input: String): String {
// Create a CRC32 instance (from Java standard library)
val crc = CRC32()
// Convert the string to UTF‑8 bytes
val bytes = input.toByteArray(StandardCharsets.UTF_8)
// Feed the bytes into the CRC32 calculator
crc.update(bytes)
// Get the computed CRC32 value (stored as a long)
val value = crc.value
// Format as 8‑digit uppercase hexadecimal (standard CRC32 format)
return "%08X".format(value)
}
fun main() {
val text = "Kotlin Programming"
// Compute the CRC32 of the string
val crc = crc32OfString(text)
println("CRC32: $crc")
}
/*
run:
CRC32: FBFC6A8A
*/
