Golang如何实现任意进制转换的方法示例

发布时间：2020-12-16 19:06:38 所属栏目：大数据来源：网络整理

导读：前言最近因为工作的需要，需要写个短链服务，用到了10-62进制，网上找了一个，可以转换最多76位进制的博客，现在分享出来，下面话不多说了，来一起看看详细的介绍吧。压缩数据用，无损压缩示例代码： package mainimport ( "fmt" "math" "strconv" "strin

前言

最近因为工作的需要，需要写个短链服务，用到了10->62进制，网上找了一个，可以转换最多76位进制的博客，现在分享出来，下面话不多说了，来一起看看详细的介绍吧。

压缩数据用，无损压缩

示例代码：

package main

import (
 "fmt"
 "math"
 "strconv"
 "strings"
)

var tenToAny map[int]string = map[int]string{0: "0",1: "1",2: "2",3: "3",4: "4",5: "5",6: "6",7: "7",8: "8",9: "9",10: "a",11: "b",12: "c",13: "d",14: "e",15: "f",16: "g",17: "h",18: "i",19: "j",20: "k",21: "l",22: "m",23: "n",24: "o",25: "p",26: "q",27: "r",28: "s",29: "t",30: "u",31: "v",32: "w",33: "x",34: "y",35: "z",36: ":",37: ";",38: "<",39: "=",40: ">",41: "?",42: "@",43: "[",44: "]",45: "^",46: "_",47: "{",48: "|",49: "}",50: "A",51: "B",52: "C",53: "D",54: "E",55: "F",56: "G",57: "H",58: "I",59: "J",60: "K",61: "L",62: "M",63: "N",64: "O",65: "P",66: "Q",67: "R",68: "S",69: "T",70: "U",71: "V",72: "W",73: "X",74: "Y",75: "Z"}

func main() {
 fmt.Println(decimalToAny(9999,76))
 fmt.Println(anyToDecimal("1F[",76))
}

// 10进制转任意进制
func decimalToAny(num,n int) string {
 new_num_str := ""
 var remainder int
 var remainder_string string
 for num != 0 {
  remainder = num % n
  if 76 > remainder && remainder > 9 {
   remainder_string = tenToAny[remainder]
  } else {
   remainder_string = strconv.Itoa(remainder)
  }
  new_num_str = remainder_string + new_num_str
  num = num / n
 }
 return new_num_str
}

// map根据value找key
func findkey(in string) int {
 result := -1
 for k,v := range tenToAny {
  if in == v {
   result = k
  }
 }
 return result
}

// 任意进制转10进制
func anyToDecimal(num string,n int) int {
 var new_num float64
 new_num = 0.0
 nNum := len(strings.Split(num,"")) - 1
 for _,value := range strings.Split(num,"") {
  tmp := float64(findkey(value))
  if tmp != -1 {
   new_num = new_num + tmp*math.Pow(float64(n),float64(nNum))
   nNum = nNum - 1
  } else {
   break
  }
 }
 return int(new_num)
}

总结

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（编辑：李大同）

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