在Go中编码跨字节的20位数字

package main

import (
    "fmt"
)

func encodeNumber(number int) []byte {
    bytes := make([]byte, 3)
    bytes[0] = byte(number >> 16 & 0xFF)
    bytes[1] = byte(number >> 8 & 0xFF)
    bytes[2] = byte(number & 0xFF)
    return bytes
}

func main() {
    number := 123456
    encoded := encodeNumber(number)
    fmt.Println(encoded)
}