为什么要使用.toString（32）而不是.toString（36）？(Why use .toString(32) and not .toString(36)?)

 好奇： 
 
 很多人会使用[Number].toString(32)方法来执行生成会话ID之类的操作，例如： 
 
public class SessionID{

    private static SecureRandom ran = new SecureRandom();

    public static String next() {
        return new BigInteger(130, ran).toString(32);
    }

}
 
 我还看到它用于将散列密码的字节转换为字符串格式。 但为什么不使用.toString(36) ？ Base 32不包括z，y，x或w，那么使用它的原因是什么？ （猜测与32 = 2 ^ 5有关，但我会感谢更好的答案。） 

Curious:
 
A lot of people will use the [Number].toString(32) method to do things like generate session IDs, e.g. something like:
 
public class SessionID{

    private static SecureRandom ran = new SecureRandom();

    public static String next() {
        return new BigInteger(130, ran).toString(32);
    }

}
 
I've also seen it used for translating bytes of hashed passwords to a string format. But why not use .toString(36)? Base 32 does not include z,y,x, or w, so what's the reasoning behind using it? (Guessing something to do with 32 = 2^5, but I'd appreciate a better answer.)

原文：https://stackoverflow.com/questions/29183818