纯字母的26进制算法
if (n<0)return "";
var aZ=["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
var str="";
var last=n%26;
str=aZ[last]+str;
n=n-last;
if(n>0){str=zimu(n/26-1)+str;}
return str;
}
[/code]
如果需要处理负数,其实应该用不到
[code]function zimu(n){
var fushu = n<0?true:false;
if (n<0)n=-n;
var aZ=["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
var str="";
var last=n%26;
str=aZ[last]+str;
n=n-last;
if(n>0){str=zimu(n/26-1)+str;}
return (fushu?"-":"")+str;
}
[/code]
如果不需要0,a=1,b=2
[code]function zimu(n){
if (n<=0)return "";
var aZ=["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"];
var str="";
n=n-1;
var last=n%26;
str=aZ[last]+str;
n=n-last;
if(n>0){str=zimu(n/26)+str;}
return str;
}
[/code]
用0-9,a-p表示26进制,这个就简单了
"2008".toString(26)
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