Base36 [英] Base36
本文介绍了Base36的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
任何人都有c＃Base10ToBase36和Base36ToBase10转换例程？ TIA
-
William Stacey，MVP
http://mvp.support.microsoft.com
Anyone have a c# Base10ToBase36 and Base36ToBase10 conversion routines? TIA
--
William Stacey, MVP
http://mvp.support.microsoft.com
推荐答案
William ，
这是我前段时间做的事情 - 实际上是针对不同的基础，
但是很容易改变以处理base32。
你没有为你的数字基础指定符号集 - 我将假设
0,1,2,3 ... X，Y，Z。如果你的不同，请相应更改标记字符串
。
出于性能原因，数字的权重是在编译时计算的
time。
note - 绝对没有错误检查，它只处理正值
值，并假设所有字符代码都是大写。
问候
roy罚款
名称空间CONVERSION {
//处理只有正数的值4,738,381,338,321,616,896 - 1;
公共类BASE32 {
static string tokens =" 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" ;;
static long [] powers =
{1L，36L，36L * 36L，36L * 36L * 36L，36L * 36L * 36L * 36L，36L * 36L * 36L * 36L * 36L，36L * 36L * 36L *
36L * 36L * 36L，36L * 36L * 36L * 36L * 36L * 36L * 36L，36L * 36L * 36 L * 36L * 36L * 36L * 36L * 36L，36L *
36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L，36L * 36L * 36L * 36L * 36 L * 36L * 36L * 36L * 36L * 36L，36L *
36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L};
pu blic static string ToString（long lval）{
int maxStrLen = powers.Length;
long curval = lval;
char [] tb = new char [maxStrLen];
int outpos = 0;
for（int i = 0; I< maxStrLen; i ++）{
long pval = powers [maxStrLen - i - 1];
int pos =（int）（curval / pval）;
tb [outpos ++] = tokens.Substring（pos，1）.ToCharArray（）[0];
curval = curval％pval;
}
if（outpos == 0）tb [outpos ++] =''0'';
返回新字符串（tb，0，outpos）.TrimStart（''0''）; < br $>
}
public static long ToLong（string t）{
long ival = 0;
char [] tb = t.ToCharArray（）;
for（int i = 0; i< tb.Length; i ++）{
ival + = powers [i] * tokens.IndexOf（tb [tb.Length-i-1]）;
}
返回ival;
}
}
}
" William Stacey [MVP]" < ST *********** @ mvps.org>在消息中写道
新闻：uc **************** @ TK2MSFTNGP12.phx.gbl ...
William,
this is something that i did some time ago - actually for a different base,
but it was easy enough to change to handle base32.
you did not specify the symbol set for your number base - i will assume
0,1,2,3... X,Y,Z. if yours is different, change the tokens string
accordingly.
for performance reasons, the weights of the digits are computed at compile
time.
note - there is absolutely no error checking, and it handles only positive
values, and assumes that all character codes are upper case.
regards
roy fine
namespace CONVERSION{
// handles positive only values up to 4,738,381,338,321,616,896 - 1;
public class BASE32{
static string tokens = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
static long [] powers =
{1L,36L,36L*36L,36L*36L*36L,36L*36L*36L*36L,36L*36 L*36L*36L*36L,36L*36L*36L*
36L*36L*36L,36L*36L*36L*36L*36L*36L*36L,36L*36L*36 L*36L*36L*36L*36L*36L,36L*
36L*36L*36L*36L*36L*36L*36L*36L,36L*36L*36L*36L*36 L*36L*36L*36L*36L*36L,36L*
36L*36L*36L*36L*36L*36L*36L*36L*36L*36L};
public static string ToString(long lval){
int maxStrLen = powers.Length;
long curval = lval;
char [] tb = new char[maxStrLen];
int outpos = 0;
for(int i=0; i<maxStrLen; i++){
long pval = powers[maxStrLen - i - 1];
int pos = (int)(curval / pval);
tb[outpos++] = tokens.Substring(pos,1).ToCharArray()[0];
curval = curval % pval;
}
if(outpos==0) tb[outpos++] = ''0'';
return new string(tb,0,outpos).TrimStart(''0'');
}
public static long ToLong(string t){
long ival = 0;
char [] tb = t.ToCharArray();
for(int i=0; i<tb.Length; i++){
ival += powers[i]*tokens.IndexOf(tb[tb.Length-i-1]);
}
return ival;
}
}
}
"William Stacey [MVP]" <st***********@mvps.org> wrote in message
news:uc****************@TK2MSFTNGP12.phx.gbl...
任何人都有交流＃Base10ToBase36和Base36ToBase10转换例程？
TIA
-
William Stacey，MVP
http://mvp.support.microsoft.com
Anyone have a c# Base10ToBase36 and Base36ToBase10 conversion routines? TIA
--
William Stacey, MVP
http://mvp.support.microsoft.com
嘿，非常感谢Roy。还要发布其他基地吗？无论哪种方式，
再次感谢!!
-
William Stacey，MVP
http://mvp.support.microsoft.com
Roy Fine < RL **** @ twt.obfuscate.net>在消息中写道
新闻：#w ************** @ TK2MSFTNGP09.phx.gbl ...
Hey thanks a lot Roy. Care to post the other base as well? Either way,
thanks again!!
--
William Stacey, MVP
http://mvp.support.microsoft.com
"Roy Fine" <rl****@twt.obfuscate.net> wrote in message
news:#w**************@TK2MSFTNGP09.phx.gbl...
William，
这是我前段时间做过的事情 - 实际上对于不同的
基础，但很容易改变以处理base32。
你没有指定符号设置为您的数字基础 - 我将假设
0,1,2,3 ... X，Y，Z。如果你的不同，请相应地更改标记字符串。
出于性能原因，数字的权重是在编译时计算的。
注意 - 绝对没有错误检查，它只处理正值
，并假设所有字符代码都是大写的。
问候
roy fine
名称空间CONVERSION {
//仅处理正数值4,738,381,338,321,616,896 - 1;
公共类BASE32 {
static string tokens =" 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ" ;;
static long [ ] powers =
{1L，36L，36L * 36L，36L * 36L * 36L，36L * 36L * 36L * 36L，36L * 36 L * 36L * 36L * 36L，36L * 36L * 36L *
36L * 36L * 36L，36L * 36L * 36L * 36L * 36L * 36L * 36L，36L * 36L * 36 L * 36L * 36L * 36L * 36L * 36L，36L *
36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L，36L * 36L * 36L * 36L * 36 L * 36L * 36L * 36L * 36L * 36L，36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L * 36L};
公共静态字符串ToString（long lval）{
int maxStrLen = powers.Length;
l ong curval = lval;
char [] tb = new char [maxStrLen];
int outpos = 0;
for（int i = 0; I< maxStrLen; i ++）{
long pval = powers [maxStrLen - i - 1];
int pos =（int）（curval / pval）;
tb [outpos ++] = tokens.Substring（pos， 1）.ToCharArray（）[0];
如果（outpos == 0）tb [outpos ++] =''0''; >返回新字符串（tb，0，outpos）.TrimStart（''0''）;
}
公共静态长ToLong（字符串t）{
long ival = 0;
char [] tb = t.ToCharArray（）;
for（int i = 0; i< tb.Length; i ++）{
ival + = powers [i] * tokens .IndexOf（tb [tb.Length-i-1]）;
}
返回ival;
}
}
}
William Stacey [MVP]" < ST *********** @ mvps.org>在消息中写道
新闻：uc **************** @ TK2MSFTNGP12.phx.gbl ...
William,
this is something that i did some time ago - actually for a different base, but it was easy enough to change to handle base32.
you did not specify the symbol set for your number base - i will assume
0,1,2,3... X,Y,Z. if yours is different, change the tokens string
accordingly.
for performance reasons, the weights of the digits are computed at compile
time.
note - there is absolutely no error checking, and it handles only positive
values, and assumes that all character codes are upper case.
regards
roy fine
namespace CONVERSION{
// handles positive only values up to 4,738,381,338,321,616,896 - 1;
public class BASE32{
static string tokens = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
static long [] powers =
{1L,36L,36L*36L,36L*36L*36L,36L*36L*36L*36L,36L*36 L*36L*36L*36L,36L*36L*36L* 36L*36L*36L,36L*36L*36L*36L*36L*36L*36L,36L*36L*36 L*36L*36L*36L*36L*36L,36L* 36L*36L*36L*36L*36L*36L*36L*36L,36L*36L*36L*36L*36 L*36L*36L*36L*36L*36L,36L* 36L*36L*36L*36L*36L*36L*36L*36L*36L*36L};
public static string ToString(long lval){
int maxStrLen = powers.Length;
long curval = lval;
char [] tb = new char[maxStrLen];
int outpos = 0;
for(int i=0; i<maxStrLen; i++){
long pval = powers[maxStrLen - i - 1];
int pos = (int)(curval / pval);
tb[outpos++] = tokens.Substring(pos,1).ToCharArray()[0];
curval = curval % pval;
}
if(outpos==0) tb[outpos++] = ''0'';
return new string(tb,0,outpos).TrimStart(''0'');
}
public static long ToLong(string t){
long ival = 0;
char [] tb = t.ToCharArray();
for(int i=0; i<tb.Length; i++){
ival += powers[i]*tokens.IndexOf(tb[tb.Length-i-1]);
}
return ival;
}
}
}
"William Stacey [MVP]" <st***********@mvps.org> wrote in message
news:uc****************@TK2MSFTNGP12.phx.gbl...
任何人都有ac＃Base10ToBase36和Base36ToBase10转换例程？
Anyone have a c# Base10ToBase36 and Base36ToBase10 conversion routines?
TIA
TIA
-
William Stacey，MVP
http://mvp.support.microsoft.com
可以通过字母表来应用通用基本转换：
private void char [] alphabet = new char [] {'' 0 ''， '' 1 ''， '' 2 ''， '' 3 ''， '' 4 ''}; //基础5
私有字符串IntegerToBase（int foo，char []字母表）{
int base = alphabet.Length;
string baseStr ="" ;;
do {
baseStr = alphabet [foo％base] + baseStr;
foo / =基础;
}而（foo> 0）;
返回baseStr
}
给定任何字母表，你现在可以从整数到基数。
反过来更复杂，但只是因为某些假设
必须是制作（从具有特定规则的众所周知的类型转换
如整数总是比从任意类型转换更容易
其中规则不是自我强加的一个字符串）。
我相信你也需要反过来。我已经在博客空间中进行了大量的解析
和转换例程，所以我会尝试将这个提升为博客文章，然后将其提交给博客。包含链接的文章
以及我所有解析例程的简短细节，以使它们更加可用
可访问。
-
Justin Rogers
DigiTec Web Consultants，LLC。
博客： http://weblogs.asp.net/justin_rogers
" William Stacey [MVP]" < ST *********** @ mvps.org>在消息中写道
news：u
A generic base conversion can be applied by taking an alphabet:
private void char[] alphabet = new char[] {''0'',''1'',''2'',''3'',''4''}; // Base 5
private string IntegerToBase(int foo, char[] alphabet) {
int base = alphabet.Length;
string baseStr = "";
do {
baseStr = alphabet[foo%base] + baseStr;
foo /= base;
} while(foo > 0);
return baseStr
}
Given any alphabet, you can now go one way from integers to the base.
The reverse is more complicated, but only because certain assumptions
have to be made (converting from a well known type with specific rules
such as an integer is always easier than converting from an arbitrary type
where rules aren''t self-imposed within a string).
I''m sure you also need the reverse. I already have numerous parsing
and conversion routines located in the blog space, so I''ll try and elevate
this to a blog posting, and then back it with an article that contains links
and short details to all of my parsing routines to make them more
accessible.
--
Justin Rogers
DigiTec Web Consultants, LLC.
Blog: http://weblogs.asp.net/justin_rogers
"William Stacey [MVP]" <st***********@mvps.org> wrote in message
news:u
这篇关于Base36的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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