Go数组转换，[]byte、[]unint16互相转换的方法封装，完整范例

需求：分别封装方法将[]byte转换成[]unint16，将[]unint16转换成 []byte

byte相当于unint8

分析：长度为20的[]byte转换为长度为10的[]unint16,

他们之间的转换如

 1 package main
 2 
 3 import (
 4     "fmt"
 5 )
 6 
 7 func BytesToUint16s(bytes []byte) []uint16 {
 8     numUint16s := len(bytes) / 2
 9     uint16s := make([]uint16, numUint16s)
10 
11     for i := 0; i < numUint16s; i++ {
12         uint16s[i] = uint16(bytes[i*2])<<8 | uint16(bytes[i*2+1])
13     }
14     return uint16s
15 }
16 
17 func Uint16sToBytes(uint16s []uint16) []byte {
18     numBytes := len(uint16s) * 2
19     bytes := make([]byte, numBytes)
20 
21     for i := 0; i < len(uint16s); i++ {
22         bytes[i*2] = byte(uint16s[i] >> 8)
23         bytes[i*2+1] = byte(uint16s[i])
24     }
25     return bytes
26 }
27 
28 func main() {
29     bytes := []byte{0, 1, 1, 0, 19, 18, 255, 0, 0, 1, 1, 0, 19, 18, 255, 0, 19, 18, 255, 255}
30     uint16s := []uint16{1, 256, 4882, 65280, 1, 256, 4882, 65280, 4882, 65535}
31 
32     getUint16s := BytesToUint16s(bytes)
33     getBytes := Uint16sToBytes(uint16s)
34 
35     fmt.Println(getUint16s)
36     fmt.Println(getBytes)
37 }