英文:
How to convert an integer to binary form in Go and vice versa
问题
我如何将整数转换为二进制形式？
我目前正在编写一个程序，它接受一个整数并将其转换为二进制形式。
它还应该接受二进制数并将其反转并转换回整数并打印出来。
例如：
12 -> 1100 -> 0011 -> 3
所以这个程序基本上应该：
输入：12
输出：3
package mainimport ("fmt""strconv")var j intfunc main() {fmt.Scan(&j)n := int64(j)y := strconv.FormatInt(n, 2)fmt.Println(y)reverse(y)}func reverse(y string) {}
英文:
How do i convert an Integer to binary form?
I'm currently working on a program that takes an integer and converts it to binary form.
It should also take the binary number and reverse it and convert it back to an integer and print it out.
i.e.
> <code>12 -> 1100 -> 0011 -> 3</code>
So the program should basically:
Input: 12
Output: 3
package mainimport ("fmt""strconv")var j intfunc main() {fmt.Scan(&j)n := int64(j)y := strconv.FormatInt(n, 2)fmt.Println(y)reverse(y)}func reverse(y string) {}
答案1
得分: 4
你可能想要使用encoding/binary。
示例（goplay）：
package mainimport "fmt"import "encoding/binary"import "bytes"func main() {j := int32(5247)buf := new(bytes.Buffer)err := binary.Write(buf, binary.BigEndian, j)if err != nil {fmt.Println(err)return}var k int32err = binary.Read(buf, binary.BigEndian, &k)if err != nil {fmt.Println(err)return}fmt.Println(k)}
英文:
You probably want to use encoding/binary.
Example (goplay):
package mainimport "fmt"import "encoding/binary"import "bytes"func main() {j := int32(5247)buf := new(bytes.Buffer)err := binary.Write(buf, binary.BigEndian, j)if err != nil {fmt.Println(err)return}var k int32err = binary.Read(buf, binary.BigEndian, &k)if err != nil {fmt.Println(err)return}fmt.Println(k)}
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