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大家好 StackOverflowers,今天我提出一个奇怪的问题。
众所周知,有不同的计数方式(以基数为单位)
对于基数 2(也称为二进制),计数如下
0000 = (2^3 x 0) + (2^2 x 0) + (2^1 x 0) + (2^0 x 0) = 0
0001 = (2^3 x 0) + (2^2 x 0) + (2^1 x 0) + (2^0 x 1) = 1
0010 = (2^3 x 0) + (2^2 x 0) + (2^1 x 1) + (2^0 x 0) = 2
0011 = (2^3 x 0) + (2^2 x 0) + (2^1 x 1) + (2^0 x 1) = 3
...等等...
<小时/>当我们达到高于 10 的基数时,例如 16(也称为十六进制),我们使用字母来表示值:
例如:
200 碱基 16 = C8 ---> http://www.binaryhexconverter.com/decimal-to-hex-converter (如果你不相信我;))
<小时/>但是,我们如何计算高于字母允许的碱基呢? (基数 37+)
我写了一个简单的java程序来说明我的观点:
public class Testing {
public static void main(String[] args) {
for (int base = 1;base<=50;base++){
System.out.println("===========================Base " + base + "===============================");
for (int value=1; value<=50; value++){
System.out.println(value + " base " + base + " is equal to: " + Integer.toString(value, base));
}
}
}
}
<小时/>
以下是我的程序输出的一些片段:
40 base 36 is equal to: 14
41 base 36 is equal to: 15
42 base 36 is equal to: 16
43 base 36 is equal to: 17
44 base 36 is equal to: 18
45 base 36 is equal to: 19
46 base 36 is equal to: 1a
47 base 36 is equal to: 1b
48 base 36 is equal to: 1c
49 base 36 is equal to: 1d
50 base 36 is equal to: 1e
28 base 37 is equal to: 28
29 base 37 is equal to: 29
30 base 37 is equal to: 30
31 base 37 is equal to: 31
32 base 37 is equal to: 32
33 base 37 is equal to: 33
34 base 37 is equal to: 34
35 base 37 is equal to: 35
36 base 37 is equal to: 36
37 base 37 is equal to: 37
38 base 37 is equal to: 38
39 base 37 is equal to: 39
40 base 37 is equal to: 40
41 base 37 is equal to: 41
42 base 37 is equal to: 42
43 base 37 is equal to: 43
44 base 37 is equal to: 44
45 base 37 is equal to: 45
46 base 37 is equal to: 46
47 base 37 is equal to: 47
48 base 37 is equal to: 48
49 base 37 is equal to: 49
50 base 37 is equal to: 50
<小时/>
如您所见,base 37+ 不起作用。
有办法解决这个问题吗?谢谢!
最佳答案
Character.MAX_RADIX
等于 36
(10 个数字和 26 个字母)。
如果您想使用更高的基数值,则必须编写自己的方法。这应该不会太难。我建议修改 Integer.toString(int, int)
的源代码。此方法的代码使用此数组:
final static char[] digits = {
'0' , '1' , '2' , '3' , '4' , '5' ,
'6' , '7' , '8' , '9' , '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'
};
关于java - 以没有附加字母的较高碱基计数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36108095/
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